Four friends must cross a bridge. How can they all cross it in just 17 minutes?
The illustration shows the graphs of fifteen functions. Two of them have equations $y=x^2$ and $y=-(x-4)^2$. Find the equations of all the other graphs.
Can you work out which spinners were used to generate the frequency charts?
Watch the video to see how to sum the sequence. Can you adapt the method to sum other sequences?
Infographics are a powerful way of communicating statistical information. Can you come up with your own?
Take a triangular number, multiply it by 8 and add 1. What is special about your answer? Can you prove it?
Find the sum of this series of surds.
Show that if you add 1 to the product of four consecutive numbers the answer is ALWAYS a perfect square.
What does this number mean? Which order of 1, 2, 3 and 4 makes the highest value? Which makes the lowest?
Can you tangle yourself up and reach any fraction?
