Invent shapes with different numbers of stable and unstable equilibrium points
Shapes are added to other shapes. Can you see what is happening? What is the rule?
In this game you are challenged to gain more columns of lily pads than your opponent.
Which pairs of cogs let the coloured tooth touch every tooth on the other cog? Which pairs do not let this happen? Why?
This article for teachers outlines different types of recording, depending on the purpose and audience.
Andy is desperate to reach John o'Groats first. Can you devise a winning race plan?
How many starfish could there be on the beach, and how many children, if I can see 28 arms?
