The Monty Hall Problem
Simpson's Paradox
Non-Euclidean Geometries
Planar Tessellations
Graph Theory
Alicia Boole in the Land of Polytopes
The Kepler Conjecture, or How to Store Your Cannonballs
Chaos Theory or Order in Disorder
Kovaleskaya's Spinning Top or The Best Way to Spin
Entscheidungsproblem: The End of Mathematics?