IWB iPad ANdroid Teaching Resource appSet the angle to the given amount before the time runs out.  The first 10 questions have an error margin of +/- 10 and the next ten require a greater accuracy of just +/-5.  You can be wrong, and the game will tell you what angle you have set, but you must correct it before the time bar runs out.  Good practice for visualising angles.

Go to Show the Angle education game.