3D Thinking Lab

An educational game for ages 8-12, 3D Thinking Lab trains students to visualize solids. Lessons range from the easy (Is this shape a cylinder?), to the complex. (Which of these unfolded hexagonal prisms match this shape?) There are 26 lessons included, as well as Dr Gee's Solid Shifter Machine, which lets kids build their own shapes, and see them in 3D.