Today we explored the structure and function of the human hand. First I asked the girls to trace their hands on paper. Then we identified the different components of the hand and added them to the drawing. We identified the fingernails and knuckles on the back side of the hand, and located the joints and the palm on the front side of the hand. The girls remembered how to lift their fingerprints from our crime scene activity, and added them to the fingertips. We tested the imp