What numbers would you put on this number line as it goes under the sea level?

In this game, you can add, subtract, multiply or divide the numbers on the dice. Which will you do so that you get to the end of the number line first?

An aluminium can contains 330 ml of cola. If the can's diameter is 6 cm what is the can's height?

Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?

In this problem, we're investigating the number of steps we would climb up or down to get out of or into the swimming pool. How could you number the steps below the water?

What shape is the overlap when you slide one of these shapes half way across another? Can you picture it in your head? Use the interactivity to check your visualisation.

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.

Take a look at the video and try to find a sequence of moves that will untangle the ropes.

Imagine you were given the chance to win some money... and imagine you had nothing to lose...

Investigate what happens when you add house numbers along a street in different ways.