Have a go at this 3d drawing tutorial in your Maths book. If you master this then you can try one of your own.
Use the gutter ball boards that have been made by our classmates.
Your challenge is to get accurate at throwing and catching.
Each time you get 5 in a row you move back a step.
When you miss, your buddy on the other side has a go.
Put the tennis ball and gutterball board away when you have finished.
What is your record from 5 steps away?
Warning: Only look at this link when you can juggle, these people might just impress you.