A visual proof why 1+3+5+...+(2n-1)=n²

Show that

Understanding Viviani's Theorem:👇

Iconic improper integrals:

A visual proof that the volume and surface area of a torus is the same as a cylinder (with radius r and height 2πR).

This is math.

Contrapositives are for cowards.

Theorems

A method of drawing infinitely many touching circles Credit: Matt Henderson

Mathematics. Pascal's Triangle. Patterns. SHOCKING and beautiful. "PASCAL'S FLOWERS." Multiply numbers in every second petal. You’ll get same answer no matter which starting petal. Share with friends and students.

Bubble Sort Drum Bass

How a Capacitor REALLY Charges

Why are there no green stars? As they burn hotter, stars shift: red → orange → yellow → white → blue... But green? Never! This stunning animation shows the blackbody physics trick; our eyes see white when the peak hits green.

Fourier Series of Square Wave.