A 9-year-old scrawls an innocent problem... and suddenly 3D surfaces are intersecting in 4D space.
Kids Say the Darnedest Cubics
$500 Million for Bloomberg Equals… What for You or Me?
Tricky equivalences.
A Compendium of Cool Internet Math Things
Visually stimulating. Mathematically rich.
“What Makes a Great Teacher?” Answered by 4 Great Teachers
Four different (and wise) answers.
The Truly Common Core
Math education is succeeding beautifully... for the right definition of "success."
Felt-Tip Geometry
Four beautiful new puzzles.
STEM Academia: The Game
And 20 more of my proudest math cartoons.
The Mystery of the Super Bowl Match-Ups
Four teams. Four probabilities. This shouldn't be that hard... right?
Six new geometry puzzles. How many can you solve?
Catriona Shearer strikes again.
The Game of Snakes
A pencil-and-paper game for the snake-fearing (or snake-loving) mathematician.