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Take Three From Five
problem
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Take Three From Five

11 to 16

Caroline and James pick sets of five numbers. Charlie tries to find three that add together to make a multiple of three. Can they stop him?

problem
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Cyclic Quadrilaterals

11 to 16

Draw some quadrilaterals on a 9-point circle and work out the angles. Is there a theorem?

Factors and Multiples Game
game
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Factors and Multiples Game

7 to 16

A game in which players take it in turns to choose a number. Can you block your opponent?

Coded hundred square
problem
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Coded Hundred Square

7 to 11

This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?

Machines
problem

Machines

7 to 11
What is happening at each box in these machines?
Domino Hexagon
problem

Domino Hexagon

11 to 16
Dominic wants to place the six dominoes above in a hexagonal ring. Which of the dominoes could be placed next to the one shown?
Small tomato seedlings in pink pots.
problem

Stamp Collecting

11 to 14

Last week, Tom and Sophie bought some stamps and they spent exactly £10. Can you work out how many stamps they bought?

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