[Free Registration/Login may be required to access all resource tools.] Definition of a lever and the three different classes, and how each one changes force.

Students will apply the concept of levers to the human body and build all three classes of levers within a musculoskeletal context. They will be shown how the musculoskeletal system is a system of levers and one example of each type of...

In this activity, students are challenged to design a contraption using simple machines to move a circus elephant into a rail car. After students consider their audience and constraints, they work in groups to brainstorm ideas and select...

Refreshed with an understanding of the six simple machines; screw, wedge, pully, incline plane, wheel and axle, and lever, student groups receive materials and an allotted amount of time to act as mechanical engineers to design and...