Dental issues and health have been a prominent theme in my family as of late. In looking for some lessons on teeth for my kids I came across Science With Me. This site has great lessons, coloring sheets and experiments. There’s a great one about teeth which helped me to explain to the kids which teeth come in when and what they’re called. additionally my youngest is always asking me about how the body works and there are sime great illustrative videos that can help me out with my explanations. Check it out.