This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!
Find the product of the numbers on the routes from A to B. Which route has the smallest product? Which the largest?
What does the overlap of these two shapes look like? Try picturing it in your head and then use some cut-out shapes to test your prediction.
This challenge combines addition, multiplication, perseverance and even proof.
This task combines spatial awareness with addition and multiplication.
Can you order the digits from 1-3 to make a number which is divisible by 3 so when the last digit is removed it becomes a 2-figure number divisible by 2, and so on?
Look at what happens when you take a number, square it and subtract your answer. What kind of number do you get? Can you prove it?
Try out these calculations. Are you surprised by the results?
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?
