
It’s the start of round 2 of the Math-Off, and we’ve already seen some excellent maths. 16 competitors are now 8, and they’re fighting for a place in the semi-final.
The first round 2 match is between Nira Chamberlain and Alison Kiddle.
The rules are still the same: take a look at both pitches, vote for the bit of maths that made you do the loudest “Aha!”, and if you know any more cool facts about either of the topics presented here, please write a comment below!





