
The Eyeballing Game is an interactive visual estimation game. In the Eyeballing Game players are presented with a drawing or a line segment, angle, or shape. Players are then given a task like "find the spot equidistant to all sides" or "bisect the angle."
Applications for Education
Both of the games mentioned above could be good mathematics practice activities that students can use independently. Both activities are worth considering as resources to link to your class blog or wiki.