Drag and drop the bones into the right spot in the body. Hints are available. Start learning here. Many levels can learn from this game. 4th grade through High School can learn from this game. It will not let you go on until you place the bone in the correct spot. The hints are very good for younger students. More advanced students will not always need all the hints. The fact sheets about each bone will be helpful. After you play the bone section you can also try to correctly place the muscles, organs, nervous system. Look at the top right to find the other sections of this game.