Curated OER
Powerful Pulleys
Students explore the building of a pyramid and how pulleys were used to change the direction of applied force. They demonstrate the mechanical advantage of using a pulley and apply it to modern engineering.
Curated OER
The Skeletal System
In this biology worksheet, 9th graders label the different illustrations of movable joints. Then they describe the pivot, ball-and-socket, hinge, and gliding joints in detail. Students also list the five major functions of the skeletal...