CALIFORNIA STANDARDS - 7th grade
6.Physical principles underlie biological structures and functions. As a basis for understanding this concept:
h. Students know how to compare joints in the body (wrist, shoulder, thigh) with structures used in machines and simple devices (hinge, ball-and-socket, and sliding joints). i. Students know how levers confer mechanical advantage and how the application of this principle applies to the musculoskeletal system.
j. Students know that contractions of the heart generate blood pressure and that heart valves prevent backflow of blood in the circulatory system.
HISTORY / SCIENCE PROJECT
WEBSITES for more information
Simple Machines (Appliance Help) - Thanks for the addition Jackie!
Simple Machines in Everyday Life (Thank you Sarah Washington - Valley Book Club for this suggestion)