Name: When Will I Ever Use Math?? How To ACTUALLY Answer This Question | Part 2 @MathTheWorld
Uploaded: 2026-09-28T08:17:00-05:00
Duration: 8 min 17 s
Description: When Will I Ever Use Math?? How To ACTUALLY Answer This Question | Part 2

When Will I Ever Use Math?? How To ACTUALLY Answer This Question | Part 2

Math The World 2026-09-28 | When Will I Ever Use Math?? How To ACTUALLY Answer This Question | Part 2

When Bad Math Spreads Misinformation

Math The World 2025-08-26 | Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Donate: donate.churchofjesuschrist.org/contribute/byu/physical-mathematical-sciences/math-education
Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Illustrations: Maxwell Schmutz
Editing: Jennifer Canizales
Music: Coma Media

© 2025 BYU

Change of Basis Explained Through Real World Context

Math The World 2025-08-14 | Changing bases in linear algebra can feel abstract — but it’s really just like converting between different units in the real world. In this video, we’ll use a simple food example to show how changing from one “unit system” to another works the same way as changing bases with matrices. You’ll see how context can help you build the change-of-basis matrix, and how to set up and solve problems even without a real-world story. By the end, you’ll finally understand how change of basis works and why it’s just a matter of the right multiplication.

Change of Basis Part 1: youtu.be/dOrIK7z6z-g

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

Donate: donate.churchofjesuschrist.org/contribute/byu/physical-mathematical-sciences/math-education
Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

Change of Basis Finally Made Sense When I Understood THIS

Math The World 2025-08-07 | What is a change of basis—and why does it matter in real life? In this video, we break down the concept of change of basis in linear algebra using real-world examples: why RGB doesn’t work for printers, how clothing manufacturers design better-fitting shirts, and how body measurements relate to principal component analysis (PCA). With visuals, 3D plots, and simple vector math, we make abstract ideas concrete and intuitive. Perfect for students learning linear algebra, math educators, or anyone curious how math shapes the world. If you’ve ever struggled with understanding coordinate transformations or PCA, this is the change of basis explanation you’ve been waiting for.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

Homogeneous Coordinates: youtu.be/x1F4eFN_cos
Audio Compression: youtu.be/eQT3qT85IyU

Donate: donate.churchofjesuschrist.org/contribute/byu/physical-mathematical-sciences/math-education

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

The Two Types of Division (That Most People Don’t Know)

Math The World 2025-07-25 | Did you know there are two different ways to think about division? In this video, we break down partitive (fair sharing) and quotative (measurement) division—and why understanding both is crucial for teaching concepts like dividing fractions, unit rates, scale factors, and long division. Perfect for math educators, this video helps you move beyond procedures and into deeper conceptual understanding that supports students all the way to algebra.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

Homogeneous Coordinates: The 4D Hack for 3D Animations

Math The World 2025-07-15 | Did you know all 3D animations actually come from 4D math? In this video, we reveal how animators use homogeneous coordinates to simplify the math behind translations, rotations, and camera movements—using only matrix multiplication. You’ll learn how 4D shear transformations make 3D translations possible, why adding one extra coordinate changes everything, and how this trick makes the animation pipeline much more efficient.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

Forget 1/2 Base x Height — This Is Better!

Math The World 2025-07-04 | What if you could calculate the area of a triangle or the volume of a pyramid using just vectors? In this video, we show how linear algebra offers elegant solutions through a powerful concept called the determinant. You'll see how the formula |ad - bc| / 2 gives the area of a triangle, how this extends to volume in 3D, and why the determinant tells us so much more—including whether a matrix is invertible.

Perfect for anyone curious about the real meaning of determinants—beyond just memorizing formulas.

📐 Topics covered:
– Area from vectors
– Volume of pyramids
– Determinants as transformation scalars
– Invertibility and linear independence

3 Blue 1 Brown Determinants: youtube.com/watch?v=Ip3X9LOh2dk&t=83s

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

How Matrix Math Powers 3D Worlds

Math The World 2025-06-27 | Ever wonder how 3D video games, CGI, or animated movies actually work? Behind every explosion, camera pan, or character movement is matrix math. In this video, we break down how linear algebra powers 3D worlds, using matrix multiplication as a tool for transforming coordinates and creating stunning visuals. Whether you're a gamer, animator, or math nerd—this is the math that makes it all come alive.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

How an 8 inch Pipe Can Move 8 Tons of Concrete

Math The World 2025-06-18 | What happens when you underestimate hydrostatic force? In this video, we explore the physics behind a dramatic engineering failure that sent an 8-ton concrete block flying. You'll learn what hydrostatic force really is, why it's often calculated using calculus, and how it connects to gravity, pressure, and even balloon flight. From mountain valves to everyday fluids, this is the hidden power engineers can't afford to ignore.

You Learned Integration Wrong video link: youtube.com/watch?v=MwVBzE7Z5gw
Long Snorkel Design: youtube.com/watch?v=GZyNJ0mMEGE
Detailed Setup of Integral: youtu.be/ZbHmJMCP3sw

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Editing: Jennifer Canizales
Visuals: Maxwell Schmutz
Music: Coma Media

© 2025 BYU

Predicting Math Grades with Regression (Using the Normal Equation)

Math The World 2025-06-12 | Can your personal habits really predict how well you’ll do on a test? In this video, we use linear algebra to analyze survey responses and midterm scores from real students. Along the way we learn about Matrix Algebra and one of the most useful equations in linear algebra, the Normal Equation.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media \ Restum Anoush from Pixabay

© 2025 BYU

Why You Can’t Afford a House (and It’s Not Just Inflation)

Math The World 2025-05-27 | Why are homes today so expensive—and is inflation really the full story? In this video, we compare house prices from the 1950s to now and uncover a surprising truth: while home prices have risen relative to income, today’s houses are also much bigger, packed with modern amenities like air conditioning, dishwashers, and garages. We explore the concept of "house inflation"—how homes have grown in size and luxury over the decades—and investigate how zoning laws and building regulations make it nearly impossible to build smaller, more affordable homes today. If you’re wondering why you can’t afford a house, this video breaks it down with math, economics, and real-world analysis.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Kate Nickerson
Music: Coma Media

© 2025 BYU

Applied Linear Algebra (part 9) Everything to Understand Inverse Matrices

Math The World 2025-05-21 | Why is solving Ax = b such a big deal in linear algebra? In this video, we dive deep into the deceptively simple equation at the heart of every linear algebra course—and why it takes weeks to truly understand. You'll learn how inverse matrices work, when they don’t exist, and what it really means to "divide" by a matrix. Using real-world analogies like gas prices and nutrition labels, we break down concepts like matrix multiplication, linear combinations, and linear independence. Perfect for students learning matrix inverses, solving systems of equations, or just trying to finally make sense of Ax = b. Great for linear algebra students, math majors, or anyone who wants to understand why some matrices can’t be undone.

Hill Cipher Video: youtu.be/nGqWNlkozXY

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

Applied Linear Algebra (part 8) The Importance of Linear Independence

Math The World 2025-05-14 | Your linear algebra and stats teachers have harped on this time and time again. Without it, many mathematical models break, giving infinite answers, error messages, or straight up garbage. With it, we get unique solutions, well defined coordinate systems, and it's vital in solving systems of equations, understanding transformations, and is even used in fields like quantum mechanics and computer graphics. What is this? Linear Independence.

Audio compression video: youtu.be/eQT3qT85IyU

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media \ Restum Anoush from Pixabay

© 2025 BYU

Applied Linear Algebra (part 7) Matrix Multiplication Actually Makes Sense (Here’s Why)

Math The World 2025-05-06 | DON'T memorize this – understand it. Matrix multiplication isn’t just some weird set of rules. It's a carefully designed system that fits real-world problems perfectly. To understand why it works the weird way it does, we simply need to understand it in context. Here we show why matrix multiplication works the way it does and needs that rotation.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

The ONE Change That Could Revolutionize Your Math Classroom

Math The World 2025-04-28 | Messy board work can make math learning overwhelming — but it doesn't have to be. In this video, we dive into how better board design can optimize math teaching by lowering student's extraneous cognitive load and helping them make stronger connections. Using research from my master's thesis, I explain how simple design principles like layout, grouping, and hierarchy can transform the board into a powerful teaching tool. Whether you're a math teacher or a visual learner, you'll see why effective board work matters more than you think!

Thesis link: chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=10847&context=etd
Conference presentation slides w/notes: docs.google.com/presentation/d/1AvZQmrZRaF1RcCJhLEG1iKIhWWEc02GTFS3cxycj52c/edit?usp=sharing

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Jennifer Canizales
Audio: Jennifer Canizales
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

Physics Explains Why THESE Suitcases Cause Headaches

Math The World 2025-04-22 | Why do some suitcase designs seem to cause more headaches than help—especially in crowded airports? In this video, we explore the math and physics behind pulling a suitcase and how it causes strain on your body, giving some people headaches! Using geometry, trigonometry, and a bit of optimization, we uncover how poor design choices create real-world problems. It’s a fun, visual breakdown of a frustrating everyday experience, and a great example of how math helps explain—and maybe even solve—the little design flaws that make travel harder than it needs to be.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media \ Restum Anoush from Pixabay

© 2025 BYU

Applied Linear Algebra (part 6) Real World Application of Dot Products

Math The World 2025-04-10 | You’ve probably never thought about how linear algebra and dot products make your phone calls possible — but they do! In this video, we’ll break down the hidden math behind audio compression, and how your phone uses vector projections and orthogonal basis vectors to send your voice with way less data. It’s a real-world application of linear algebra that shows up in everything from MP3s to cell signals. Whether you're a math student or just curious how tech really works, this one's gonna blow your mind.

Dot Product Video: youtu.be/BKwKRIUKv64

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2025 BYU

How the Albatross Proves the Earth is NOT Flat

Math The World 2025-04-04 | Here we present a new proof that the earth is indeed a sphere! We call it, proof by Albatross. What's your favorite spherical earth proof? Or flat earth claims? Let us know below!

Proof website: flatearth.ws

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Jennifer Canizales
Animation: Maxwell Schmutz
Music: Coma Media

© 2025 BYU

The Math Trick That Made a 9-Year-Old Smarter Than His Teacher

Math The World 2025-03-26 | Understanding finite arithmetic series does NOT have to be about memorizing formulas. Instead, understand them! Here we show how to easily develop an understanding for the sum of a finite arithmetic series. A great lesson to share with your own students (if you're a teacher) or as a great exercise (if you are the student)!

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Jennifer Canizales
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

How Much Does It REALLY Cost to Cool Your Home? (You’ll Be SHOCKED!)

Math The World 2025-03-19 | What does is really cost to cool your home? And what's cheaper, central AC, window AC, or ceiling fans? In this video we use basic math to answer these questions and give you insight into how to save money on your electricity!

Spreadsheet: docs.google.com/spreadsheets/d/13PFI24bUZM6pYGYi8V416b5pFfI_6_JR5ChSLOlfIyA/edit?usp=sharing

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Jennifer Canizales
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

The Geometry Problem That’s Easier With Linear Algebra!

Math The World 2025-03-13 | Vector Geometry is a powerful tool for solving geometry problems! In this problem we use vectors and linear algebra to find the perfect angle to cut our carpenter's pyramid.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media \ Restum Anoush from Pixabay

© 2024 BYU

When Will I Ever Use Math? How to Actually Answer This Question

Math The World 2025-03-04 | This video takes a deep looking into how to answer the age old student question "When will I ever use math?" Exploring all the nuances and pitfalls of trying to explain how math is useful in real life.

This is a re upload of part 1 and 2 of this series from last year that we wanted to put back out as a combined video

"When Will I Ever Use This?" Essay: https://mat.fsv.cvut.cz/zindulka/texts/Douglas_Corey.pdf

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

In this channel we use unique algebra context topics, geometry context topics, trigonometry context topics, and calculus context topics. We go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Tech House

© 2023 BYU

Applied Linear Algebra (part5) Using Linear Algebra in 4 Dimensions

Math The World 2025-02-27 | You might think building a simple wooden pyramid is easy. But turns out carpentry involves a lot of math! Each face is an equilateral triangle, so you’d expect to tilt the saw blade at 30 degrees... but that’s completely wrong! So how do you find the right angle? Well, that will involve some geometry and trigonometry, but for the simplest solution we'll use linear algebra in 4 dimensions!

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media \ Restum Anoush from Pixabay

© 2024 BYU

Applied Linear Algebra (part 4) How to Derive the Cosine Ranking Formula for Similarity

Math The World 2025-02-18 | Knowing how a formula is derived lends lots of insight into how it works and often helps with remembering it better! Here we should one way to derive the cosine ranking formula, sometimes called the cosine similarity formula. And check out our previous videos for applications of this formula in real life!

Part 2: youtu.be/BKwKRIUKv64
Part 3: youtu.be/uZLkhkCmwHg

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Jennifer Canizales
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

Applied Linear Algebra (part 3) Real Life Application of the Cosine Similarity Formula

Math The World 2025-02-12 | Here is the ACTUAL Cosine Ranking Video we meant to upload....

The rise of online dating across the globe is no secret. But what is a secret is the algorithm different apps like Hinge, Tinder, or Bumble use to find you your perfect match.

With Valentines day coming up you might be wondering, how can I use math to find myself a valentine's day date? Or maybe you're just really interested in understanding how dating app algorithms work.

Either way this video has what you're looking for as we'll be diving deep into things like cosine ranking, Elo rankings, collaborative filtering, and the Gale Shapley Algorithm which all play a crucial role in the world of online match making.

Part 1: youtu.be/woMoi70QMIw
Part 2: youtu.be/BKwKRIUKv64

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Jennifer Canizales
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

Applied Linear Algebra (part 2) What is the Dot Product and How is it Used?

Math The World 2025-01-31 | In part 2 of our linear algebra series we cover the dot product and how it is used in matching algorithms like the cosine ranking method. These algorithms are widely used in matching services like dating apps and recommendations given to you on tv, movie, and music apps.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

Part 1: youtu.be/woMoi70QMIw
Part 3: youtu.be/uZLkhkCmwHg

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media \ Restum Anoush from Pixabay

© 2024 BYU

Applied Linear Algebra (part 1) Vector Addition Explained with Context

Math The World 2025-01-18 | In this new series of videos we're diving into Linear Algebra! Up first, what is a vector? What is a matrix? And how do we add or subtract vectors? And what does that addition and subtraction of vectors mean with real life applications and contexts?

3Blue1Brown videos: youtube.com/playlist?list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media \ Restum Anoush from Pixabay

© 2024 BYU

How Affordable is the American Dream?

Math The World 2025-01-09 | In this video we explore what Investopedia got wrong about their break down of the American Dream in todays economy.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media \ Restum Anoush from Pixabay

© 2024 BYU

The True Power of Wind According to Math

Math The World 2025-01-01 | Wind can do a lot of damage! And as its speed increases you may find it surprising that its power does not increase proportionally! But math can help us understand how wind can so easily knock over trash cans, trees, cars, and even buildings!

Proven Math Strategies for Winning Ticket to Ride

Math The World 2024-12-24 | Playing Board Games this Holiday Season? Learn some proven strategies for winning Ticket to Ride based in math! These hacks are backed by math and geometry to give you the edge in this board game.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

The Math That Won the Texas Rangers the World Series

Math The World 2024-12-19 | Math and Data analytics can make a HUGE difference in sports. And in this case it was critical to helping the Texas Rangers win their first ever world series in 2023! This video is about Will Melville, a BYU PHD student who helped developed a new outfield positioning strategy that lead the Rangers to their iconic win!

Link to the scientific paper: cdn.prod.website-files.com/5f1af76ed86d6771ad48324b/65bfe4996c2c54376b78d238_193963%20-%20Optimizing%20Baseball%20Fielder%20Positioning%20with%20Consideration%20for%20Adaptable%20Hitters.pdf

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

How Tie-Dye Patterns Revolutionized Solar Arrays

Math The World 2024-12-12 | Here we show how wondering about the spirals on tie dye t-shirts lead to improvements made in the engineering of solar arrays for satellites! With the use of polar equations, logarithmic spirals, and differential equations Doug was able to discover an interesting combination of complimentary logarithmic spirals that create a very efficient origami like folding pattern that can take large pieces of flat material and fold it into small cylinders.

Doug's paper on Tie Dye T-Shirt Spirals: doi.org/10.1080/07468342.2019.1655374

BYU origami solar array full video: youtube.com/watch?v=3E12uju1vgQ

Nasa StarShade full video: youtube.com/watch?v=ALGI0ex0-ac&t=121s

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

Can Wind Really Turn You Into a Human Kite?

Math The World 2024-12-05 | Can enough wind and surface area really turn you into a human kite? We use math to find out if this is truth or myth! Here we analyze a friend's tall tale of holding onto a large cardboard cut out atop a moving van and going airborne!

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

Can Math Justify Your Thanksgiving Feast? Let’s Find Out!

Math The World 2024-11-26 | Turkey Day is upon us and we have some math questions! How far would you have to run to burn off those extra Thanksgiving dinner calories? How far could the energy consumed on Thanksgiving day take us? And who spends more, Black Friday shoppers or the US government?

Whose the Bigger Black Friday Spender: Shoppers or the US Government?

Math The World 2024-11-22 | Black Friday is nearly here and we have some questions math can answer! Who spends more on Black Friday? Shoppers in the US? Or the Government?

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

How Much ENERGY Is Consumed at Thanksgiving Dinner?

Math The World 2024-11-21 | It's Thanksgiving and we have some turkey driven questions! Let's use math to answer them. Today we were wondering, how much energy in consumed nationwide at thanksgiving dinner? And just how far could that energy take us?

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

How Far to Run to Burn off Thanksgiving Calories?

Math The World 2024-11-20 | Turkey Day is upon us and we have some questions! Let's use math to answer them! How far do I need to run to burn off all those extra thanksgiving calories?

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2024 BYU

What If THIS Ox Held the Key to Powering the World?

Math The World 2024-11-12 | We all know there is an energy crisis but did you know Phineas and Ferb already solved the problem? Yes, with the discovery of THIS special OX. Here we break down the math to show the true energy splendor of this magnificent beast and how it and it's food source could solve the world's energy problems.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

Why this Square is ACTUALLY a Circle!

Math The World 2024-11-07 | You might think shapes are elementary. You learned them when you learned your ABC's. But if we're going by their textbook mathematical definitions things can actually get a lot more complex! Not all circles are the same and depending on the distance formula used, like the Chebyshev Distance Formula, they can look quite different, even a square!

James Tanton Squine/Cosquine: youtube.com/watch?v=yk-QCbTGNIY

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Visuals: Kate Nickerson
Editing: Jennifer Canizales
Music: Coma Media

© 2023 BYU

My Calculus Students HATE this Math Problem

Math The World 2024-10-30 | This trigonometry problem is much more challenging than it first appears! And it always stumps my calculus students. Here we dive into the world of angles, trigonometry, in order to find the length of a three dimensional object, a nail, when given a two dimensional image, an x-ray. Measuring distance in perspective is tricky business but here we break down it down easy for you.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

Math Explains Why Daily Medications (Surprisingly) Dont Lead to Overdose

Math The World 2024-10-23 | It's amazing to see all the ways math helps explain real world phenomenon and medicine dosage is definitely one of those things. You might suspect that taking the same medicine every day would HAVE to lead to overdose or at least very toxic levels with risk of liver or kidney failure. But thanks to THIS mathematical phenomenon pharmacists and doctors are able to safely prescribe medicine for long term use! The secret? Series!

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

The Key to Calculating Safe Sleeping Pill Dosage

Math The World 2024-10-17 | Ever wondered just how much of a medication your specific body needs? Well don't do this math at home! Not unless your doctor says you can at least. In this video Doug was instructed by his doctor to experiment with different dosages of some sleep aid medication. Being the math nerd he is he decided to use some empirical evidence and math to calculate exactly what he would need for the perfect nights rest.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

Did my Kids Solve the Most Ironic Math Problem Ever?

Math The World 2024-10-08 | Have you ever encountered a math problem you thought was ironic? Let us know in the comments! Here Doug's kids do math to find out how long it will take to burn their hated math book, and along the way learn some valuable math lessons about qualitative reasoning, numeracy, and school math versus real world math.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

Using Math to Hyper Optimize Mark Robers Rock Skipping Techniques (Part 2)

Math The World 2024-10-03 | Rock Skipping is a very technical skill! But with some math and physics we will show how to optimize our rock skipping techniques to get that perfect skip to bounce across the water.

You can find Mark Rober's video here: youtube.com/watch?v=M0_U1FHwACk

Using Math to Hyper Optimize Mark Robers Rock Skipping Techniques Part 1

Math The World 2024-09-25 | Rock Skipping is a very technical skill! But with some math and physics we will show how to optimize our rock skipping techniques to get that perfect skip to bounce across the water.

You can find Mark Rober's video here: youtube.com/watch?v=M0_U1FHwACk

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

Which is Bigger - Words Ever Spoken or Stars in the Universe?

Math The World 2024-09-18 | There are some truly large quantities out there! And it takes a lot of work to guessimate their value. Here we explore how math and data can be used to estimate the numbers of words ever spoken in human history and the number of stars in the universe and compare them to how large a googol is. Think we'll get close? Let's find out!

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

Math Explains How High and How Fast to Watch the Sunset Twice

Math The World 2024-09-11 | Have you ever heard that you can watch the sunset twice by riding a really tall elevator? Or driving up a mountain? Or simply by laying down and then standing back up? In this video we tackle how theoretically plausible these scenarios are with math! All you need is a little geometry and trigonometry to find out how to watch a double sunset

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

How to Optimize a Perfect Ball Toss for your Child

Math The World 2024-09-04 | Struggle playing catch with your child? Maybe it's not their fault but yours! Here we delve into the mathematics behind optimizing the perfect ball toss for your little ones feeble hands so it is easiest for them to catch. With some physics and a little calculus we'll see at what angle to toss the ball so it lands in their hands the softest!

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Spencer Goff
Editing: Jennifer Canizales
Music: Coma Media

© 2023 BYU

Why Few Math Students Actually Understand the Meaning of Means

Math The World 2024-08-27 | Did you know there is more than one way to calculate the mean? Mathematics has many means! Arithmetic mean, geometric mean, harmonic mean, least squares mean, and many many more. Why so many means? We tackle this question in this video to better understand why students too often misunderstand the meaning of a mean.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jade Gregg
Editing: Jennifer Canizales
Music: Coma Media

© 2023 BYU

How Far Out to Sea Can You ACTUALLY See?

Math The World 2024-08-20 | In this video we use geometry to see just how far out the horizon really is! And answer the question, how far out to sea can you see? The answer will definitely surprise you! We also extend this problem by analyzing the line of sight on other planets and for people of different heights.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU

Five Steps You Need to Master Real World Problem Solving

Math The World 2024-08-13 | While problem solving in the real world is a very creative process with many ways to approach each unique situation, there are some general steps you can take to help improve your problem solving skills when it comes to mathematical and scientific questions! Here we discuss those five steps and show how to apply them with some real world problems and applications.

Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”

We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.

Instagram: instagram.com/maththeworld
Twitter/X: twitter.com/math_the_world
Facebook: facebook.com/maththeworldproject
Email: MathTheWorld@byu.edu

Created by Doug Corey

Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media

© 2023 BYU