Tumble ‘N Teach Book Review inflatable cube is an interactive teaching manipulative that makes doing a book review fun and exciting. Designed to generate random questions that will pertain to any novel or short story you are reading. Use it at home or in the classroom for a great way to review the plot, setting, and characters. Simply toss or roll the cube to someone, when it comes to a rest, the inside cube will combine with the outside cube to ask a question about the story. Each piece measures approximately 8 inches square when inflated. Comes individually retail boxed and UPC coded. Retail value is $16.95.