This human body puzzle includes seventeen pieces, all of which are double-sided to show the skeleton on one side and muscles & organs on the other.  The pieces are magnetic so the puzzle can be assembled on a whiteboard or other magnetic surface as well as on a regular tabletop.  You can write on the pieces using either dry-erase or wet-erase markers (we recommend testing your marker on a small section first) for exercises in naming the parts and other learning exercises.  The completed puzzle measures 1 metre (about 3 feet) tall, and comes with a guide booklet that names all of the bones, muscles and organs shown on the puzzle as well as fascinating facts and activity starters.