How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?

This activity is best done with a whole class or in a large group. Can you match the cards? What happens when you add pairs of the numbers together?

A hundred square has been printed on both sides of a piece of paper. What is on the back of 100? 58? 23? 19?

Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.

Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of 3 dominoes?

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?

This problem challenges you to find out how many odd numbers there are between pairs of numbers. Can you find a pair of numbers that has four odds between them?

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?

Dotty Six is a simple dice game that you can adapt in many ways.

Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?

An activity centred around observations of dots and how we visualise number arrangement patterns.

Dotty Six game for an adult and child. Will you be the first to have three sixes in a straight line?

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