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The probability that a passenger books a flight and does not turn up is 0.05. For an aeroplane with 400 seats how many tickets can be sold so that only 2% of flights are over-booked?

"Ip dip sky blue! Who's 'it'? It's you!" Where would you position yourself so that you are 'it' if there are two players? Three players ...?

Two children made up a game as they walked along the garden paths. Can you find out their scores? Can you find some paths of your own?

Follow the clues to find the mystery number.

Place the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?

This cube has ink on each face which leaves marks on paper as it is rolled. Can you work out what is on each face and the route it has taken?

Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?

Can you describe the journey to each of the six places on these maps? How would you turn at each junction?

After training hard, these two children have improved their results. Can you work out the length or height of their first jumps?

The large rectangle is divided into a series of smaller quadrilaterals and triangles. Can you untangle what fractional part is represented by each of the shapes?