The Visible Body
Make sure you preview what you want to show. This is an anatomically correct visual.
http://www.visiblebody.com/start

KIDS HEALTH
www.kidshealth.org/kid/

PE CENTRAL
www.pecentral.org

PE LINKS
www.pelinks4u.org/index.htm

LESSON PLANS
www.lessonplanspage.com/PE45.htm

MR. GYM
www.MrGym.com

Games Coaching Tool
http://www.ngfl-cymru.org.uk/vtc/ngfl/p_e/150/SportsFields.swf