Learning anatomy has never been so fun and inspirational! This detailed educational puzzle will delight advanced puzzle lovers. First, children assemble the 204-piece puzzle (quite a challenge!), which depicts the human body's major organs and systems, and then find the 70 elements featured in the picture frame. The large double-sided poster included features lots of interesting facts about the human body. The puzzle helps expand and reinforce children's knowledge of anatomy in a comprehensive way. It is an excellent tool for training concentration and perceptiveness, encouraging kids to spend their free time creatively. Assembled puzzle measures 19" x 27".