This is a challenge to see how much popcorn different cylindrical shapes can hold.

Count the number of animals in the picture of the rain forest.

This page has lots of questions that deal with money problems.

Interactive graphics of geometrical theorems to help pupils understand geometrical theorems.

Randomiser description? Just what everyone wants, a piece of software to carry out probability experiments. You can throw dice and coins many times. You can also choose playing cards.