Being collaborative

Imagine flipping a coin a number of times. Can you work out the probability you will get a head on at least one of the flips?

These eleven shapes each stand for a different number. Can you use the multiplication sums to work out what they are?

Try entering different sets of numbers in the number pyramids. How does the total at the top change?

Can you deduce which Olympic athletics events are represented by the graphs?

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?

Charlie has made a Magic V. Can you use his example to make some more? And how about Magic Ls, Ns and Ws?

These Olympic quantities have been jumbled up! Can you put them back together again?

Generate three random numbers to determine the side lengths of a triangle. What triangles can you draw?

Can you find the squares hidden on these coordinate grids?

If you have only 40 metres of fencing available, what is the maximum area of land you can fence off?