These free - standing, 48 - page, spiral bound books offer a progression of hands - on activities to make learning math easier. From basic skills to advanced problems, each book combines hands - on math activities using a variety of manipulatives and includes answers on the back of every page for easy student self - checking. Students build models and compare groupings to help them solve math problems in a fun, interesting way. Tub of manipulatives which can be used with all Flip Over Math books (sold separately) includes Pattern Blocks, Connecting People, Connecting Cuisenaire Rods, Coins, and Bean Counters. Books are aligned with NCTM Standards.