Being curious

How well can you estimate 10 seconds? Investigate with our timing tool.

Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?

I'm thinking of a rectangle with an area of 24. What could its perimeter be?

Is there a relationship between the coordinates of the endpoints of a line and the number of grid squares it crosses?

In this follow-up to the problem Odds and Evens, we invite you to analyse a probability situation in order to find the general solution for a fair game.

Can you work out which spinners were used to generate the frequency charts?

This activity is based on data in the book 'If the World Were a Village'. How will you represent your chosen data for maximum effect?

15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?

Which countries have the most naturally athletic populations?

Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?