Maths Sandpit

Use the buttons to add different coloured triangles to play with. Drag them outside of the sandpit to delete them.

I’ve just written a simple app to help people explore maths with shapes and colour. It can be used for all sorts of topics from simple arithmetic to more complex ideas like ratio and permutations. Below is an example of the sandpit in use, giving a simple visual representation of the ratio 1:2. Maths Sandpit by Robin Andrews