Two cannons are fired at one another and the cannonballs collide... what can you deduce?
This problem explores the biology behind Rudolph's glowing red nose, and introduces the real life phenomena of bacterial quorum sensing.
Exponential functions grow pretty quickly...
Given the mean and standard deviation of a set of marks, what is the greatest number of candidates who could have scored 100%?
Build series for the sine and cosine functions by adding one term at a time, alternately making the approximation too big then too small but getting ever closer.
Make your own double-sided magic square. But can you complete both sides once you've made the pieces?
