Use this wheel as a formative assessment tool. Write questions for each colour, spin the wheel and when it stops, students answer the question according to the colour chosen.
Click on full screen for maximum effect. Why not give students a small whiteboard each on which they can write their responses. Feel free to copy this to your own Sratch account. Sign in, choose 'See Inside' then click on 'remix'. Now the wheel will be in your own account.