This is a game for learning fractions. It shows 1 to 4 pieces of a circle. The fraction should be the fraction of the circle that is blue. Click on the green check mark if the fraction is correct, or click on the red X if the fraction is incorrect. If you are right, you will hear a gong and get a star, but if you are wrong, you will hear a rattle and won't get a star.
Thanks to sjhalasz for the fraction template.