The 14 page book showing each piece and naming the parts found on it with a brief description of each organ and its function is helpful, but not thorough enough to fully utilize this puzzle. I’d suggest a good anatomy program or a helpful librarian. The parts seem to be well made, but I have not yet put it to the “kid test.” Some of the removable parts include: eyeball with muscles attached, lungs, kidneys, trachea/larynx with bronchi and a two-part heart with ventricles and atriums. The head is removable (really cool or really disgusting- you decide). Either way it allows for the examination of the four-part brain with brainstem, cerebellum and lobes. Also included is a spinal cord and vertebral column. There are too many parts to mention. This product (Deluxe Torso Anatomy Puzzle) would be a great addition to any home school conducting a formal (or informal) study of anatomy. Everyone should understand how the human body works in order to make well-informed health and medical decisions.