When I fold a 0-20 number line, I end up with 'stacks' of numbers on top of each other. These challenges involve varying the length of the number line and investigating the 'stack totals'.

There are lots of different methods to find out what the shapes are worth - how many can you find?

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?

My dice has inky marks on each face. Can you find the route it has taken? What does each face look like?

Try adding fractions using A4 paper.

This task offers opportunities to subtract fractions using A4 paper.

Can you create jigsaw pieces which are based on a square shape, with at least one peg and one hole?

How many questions do you need to identify my quadrilateral?

Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?