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

Charlie and Alison have been drawing patterns on coordinate grids. Can you picture where the patterns lead?

Can you describe this route to infinity? Where will the arrows take you next?

Watch these videos to see how Phoebe, Alice and Luke chose to draw 7 squares. How would they draw 100?

Watch the video to see how Charlie works out the sum. Can you adapt his method?

Can one example help us to perceive the generality?

Can you find a reliable strategy for choosing coordinates that will locate the robber in the minimum number of guesses?