This is a game that can be used to review a class' ability to estimate square roots. The teacher sets a range within which the students' estimate needs to fall. If the students answer correctly within the teacher's closest range they receive three points. If they are within the second closest range the students receive 2 points. If they are within the third range they score 1 point. Anything further out than that will get the group no points. The group with the most points at the end of the game wins.