The Clever Catch Human Anatomy ball is a 24" inflatable ball for dealing with questions relating to the human body. The Human Anatomy Clever Catch® provides an excellent way for children to learn about the human body systems and functions. There are 100 facts included. Clever Catch® can be used at school in organized classroom activities. It can also be used on the playground or at home. Grades 4+, Ages 9+. Example questions are: Name the three main parts of the brain. How many chambers are there in the human heart? What hormone is produced by the adrenal glands? An answer sheet and play instructions are included.BASIC PLAY:Basic play for Clever Catch® is simple. Two or more players 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 child will know which problem to answer. Answers are provided in this insert for independent play by students.