img5 - Chalkdust

Sam is a maths student at Durham University where he hosts
Chalkboard Ultra podcast and spends too much time thinking about the Standard Model and Mexican hats. If he’s not pestering Adam then he can definitely be found playing the keytar in a funk band completely unrelated to quantum field theory.

A symmetric universe
Sam Kay reflects on building a universe
The big argument: Should we write another issue?
How much barrel is left to scrape?
The big argument: What’s the best way to end a proof?
QED or $\square$?
Going once, going twice… game theory?
A quick look at how to get the most bang for your buck the next time you're in a bidding war
Puzzles about calculus
Can you solve these puzzles about differentiation and integration?
Victorian maths tricks with old money
Exploring mental arithmetic tricks in T. Martin's 1842 guide, 'Pounds, shillings and pence'