The Geometry Clever Catch® has 73 color coded questions which include: Coordinate System; Planes, Lines and Angles; Quadrilaterals, and Triangles. Clever Catch® is played with at least two students who toss the ball to each other, answering the problem underneath or closest to their left thumb. Each problem is numbered and enclosed in its own space, assuring the student will know which problem to answer. A teacher or another student can moderate with the provided answer sheet to ensure the correct answer. The 24" vinyl ball provides an excellent way to study Geometry facts. Clever Catch® is latex free, CPSIA compliant, and comes complete with answer sheet and repair patch.