Division by Zero

A blog about math, puzzles, teaching, and academic technology

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My friend & colleague's excellent book now out in paperback: Nine Algorithms That Changed the Future by J. MacCormick bit.ly/HMy8We 7 hours ago
Solving a Riddle of Primes | NY Times nyti.ms/YVvcAI 7 hours ago
Can you match the equations to their graphs? | Sporcle bit.ly/18dyq5F 8 hours ago
The water tower in Iron Man 3 should have fallen down sooner | Steel in Extremis bit.ly/16K6JmQ 15 hours ago
RT @JohnDCook: Grover Cleveland totally looks tike Vernon Dursley ow.ly/lcZQQ 15 hours ago