This classic inflatable teaching tool has a place in every classroom * Students toss this durably built 24" inflatable ball to each other * The student catching the ball looks at the question, fact, or number under their thumbs and answer the question posed to them * These classic manipulatives with combinations of games and questions are endless and the learning never stops * Provides years of education in the classroom, playground, or home * As each student masters the questions on one ball, there is always another available to stretch the intellect and provide more practice.