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

Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

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?

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.