game
Sliding puzzle
The aim of the game is to slide the green square from the top right hand corner to the bottom left hand corner in the least number of moves.
There are lots of different methods to find out what the shapes are worth - how many can you find?
Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?
99% of people who have measles have spots. Ben has spots. Do you think he has measles?