An investigation looking at doing and undoing mathematical operations focusing on doubling, halving, adding and subtracting.

Daisy and Akram were making number patterns. Daisy was using beads that looked like flowers and Akram was using cube bricks. First they were counting in twos.

Yasmin and Zach have some bears to share. Which numbers of bears can they share so that there are none left over?

You'll need two dice to play this game against a partner. Will Incey Wincey make it to the top of the drain pipe or the bottom of the drain pipe first?

Buzzy Bee was building a honeycomb. She decided to decorate the honeycomb with a pattern using numbers. Can you discover Buzzy's pattern and fill in the empty cells for her?

If you count from 1 to 20 and clap more loudly on the numbers in the two times table, as well as saying those numbers loudly, which numbers will be loud?

Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?

On Friday the magic plant was only 2 centimetres tall. Every day it doubled its height. How tall was it on Monday?

How many legs do each of these creatures have? How many pairs is that?

Use cubes to continue making the numbers from 7 to 20. Are they sticks, rectangles or squares?

At the beginning of May Tom put his tomato plant outside. On the same day he sowed a bean in another pot. When will the two be the same height?

Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?

Can you work out how to balance this equaliser? You can put more than one weight on a hook.

Can you work out how many flowers there will be on the Amazing Splitting Plant after it has been growing for six weeks?

This problem looks at how one example of your choice can show something about the general structure of multiplication.

A simple visual exploration into halving and doubling.

"Ip dip sky blue! Who's 'it'? It's you!" Where would you position yourself so that you are 'it' if there are two players? Three players ...?

This problem is designed to help children to learn, and to use, the two and three times tables.

Find a great variety of ways of asking questions which make 8.