A task which depends on members of the group noticing the needs of others and responding.

Here is a picnic that Petros and Michael are going to share equally. Can you tell us what each of them will have?

Use two dice to generate two numbers with one decimal place. What happens when you round these numbers to the nearest whole number?

Investigate this balance which is marked in halves. If you had a weight on the left-hand 7, where could you hang two weights on the right to make it balance?

Watch this animation. What do you see? Can you explain why this happens?

This task offers opportunities to subtract fractions using A4 paper.

Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.

Can you find ways to make twenty-link chains from these smaller chains? This gives opportunities for different approaches.

Watch the video to see how to fold a square of paper to create a flower. What fraction of the piece of paper is the small triangle?

Can you find different ways of showing the same fraction? Try this matching game and see.

Using the picture of the fraction wall, can you find equivalent fractions?

Would you rather: Have 10% of £5 or 75% of 80p? Be given 60% of 2 pizzas or 26% of 5 pizzas?

What happens when you round these numbers to the nearest whole number?

Investigate the successive areas of light blue in these diagrams.

Can you find combinations of strips of paper which equal the length of the black strip? If the length of the black is 1, how could you write the sum of the strips?

Andy had a big bag of marbles but unfortunately the bottom of it split and all the marbles spilled out. Use the information to find out how many there were in the bag originally.

On my calculator I divided one whole number by another whole number and got the answer 3.125. If the numbers are both under 50, what are they?

The discs for this game are kept in a flat square box with a square hole for each. Use the information to find out how many discs of each colour there are in the box.

What fraction of the black bar are the other bars? Have a go at this challenging task!

Find the product of the numbers on the routes from A to B. Which route has the smallest product? Which the largest?

Can you compare these bars with each other and express their lengths as fractions of the black bar?

An activity based on the game 'Pelmanism'. Set your own level of challenge and beat your own previous best score.

There are three tables in a room with blocks of chocolate on each. Where would be the best place for each child in the class to sit if they came in one at a time?

A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.