Four beautiful new puzzles.
Felt-Tip Geometry
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.
Books I Loved in 2019
Thirty favorites (not including the one I wrote).
The Incalculable Joy of Fermi Questions
How many clicks will this post get?
366 Days of Math
The February 29th page is a flowchart for whether you need the February 29th page.
Why Does Everything Make Us Feel Old?
I mean, other than the fact that we're old.
Geometry Puzzles for a Winter’s Day
Fight cold with math.