Have a go at creating these images based on circles. What do you notice about the areas of the different sections?
What's the largest volume of box you can make from a square of paper?
Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
On the graph there are 28 marked points. These points all mark the vertices (corners) of eight hidden squares. Can you find the eight hidden squares?
An aluminium can contains 330 ml of cola. If the can's diameter is 6 cm what is the can's height?
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.
