A Brownie Puzzle (Tanton Mathematics) @DrJamesTanton

Uploaded March 2012 | Updated September 2026, 3 weeks ago

A cute brownie puzzle leads to a serious math question: Which polygons possess the same amazing "cut in half" property as rectangles?

The number e and Compound Interest (TANTON Mathematics)

Logarithms: More Mathematics about them PART II (TANTON Mathematics)

A Volume/Surface Area Query in Calculus (Tanton Mathematics)

$Fractions take up No Space: Rationals Have Measure Zero (TANTON Mathematics) How much space do the fractions take up on the number line? NONE! In this video we add up pieces of ribbon to prove that the fractions have measure zero. It is all very easy and very perturbing because it is easy! [This video does assume familiarity with the geometric series formula - so you might want to watch a video on that too. I do that with paper tearing!]$

Two Paradoxes: Pi equals 2 and SQRT(2) equals 2 (TANTON: Mathematics)

Proving the Reflection Property of an Ellipse (Tanton Mathematics)

Fibonacci Surprises_Part 1 via PowerPoint (Tanton Mathematics)