MathLapse: Music of the Sphere not4school 2016-06-15 | Archimedes' derivation of the surface area of a sphere.
π is irrational (part 5: Tangent of a rational is irrational) not4school 2017-05-15 | Playlist: youtube.com/watch?v=FIgowirk2LU&list=PLUVxNhpDrWSJFhlEs9D-udLWsQfl2KHIZ
π is irrational (part 4: Formula for tangent) not4school 2017-05-14 | Playlist: youtube.com/watch?v=FIgowirk2LU&list=PLUVxNhpDrWSJFhlEs9D-udLWsQfl2KHIZDesmos page: desmos.com/calculator/mqm8ynouim
π is irrational (part 3: Continued fractions - algebra) not4school 2017-05-13 | Playlist: youtube.com/watch?v=FIgowirk2LU&list=PLUVxNhpDrWSJFhlEs9D-udLWsQfl2KHIZ
π is irrational (part 2: Continued fractions - arithmetic) not4school 2017-05-12 | Playlist: youtube.com/watch?v=FIgowirk2LU&list=PLUVxNhpDrWSJFhlEs9D-udLWsQfl2KHIZ
π is irrational (part 1: Formulas for sine and cosine) not4school 2017-05-11 | Playlist: youtube.com/watch?v=FIgowirk2LU&list=PLUVxNhpDrWSJFhlEs9D-udLWsQfl2KHIZDesmos page: desmos.com/calculator/bv3golf4mm
π is irrational (part 0: Introduction) not4school 2017-05-10 | Why is π irrational? Here's a proof without calculus.Playlist: youtube.com/watch?v=FIgowirk2LU&list=PLUVxNhpDrWSJFhlEs9D-udLWsQfl2KHIZLambert's 1761 proof: https://www.bibnum.education.fr/mathematiques/theorie-des-nombres/lambert-et-l-irrationalite-de-p-1761Legendre's version (1823): archive.org/details/lmentsdegomtrie10legegoog (p. 289)Niven's 1947 proof: projecteuclid.org/euclid.bams/1183510788
How to solve word problems not4school 2016-05-27 | Music: Open Goldberg Variationscomposed by J. S. Bachperformed by Kimiko Ishizakahttp://www.opengoldbergvariations.org
What *is* the dot product, really? not4school 2016-01-07 | What your math teacher didn't tell you...Longer version: youtube.com/watch?v=REmg8BsZLK8
What *is* the dot product, really? (longform) not4school 2016-01-07 | What your math teacher didn't tell you...
