Students discover the catapult. In this catapult lesson, students research the history of the catapult and how it works. They work in groups to build their own catapult using tootpicks, popsicle sticks, rubber bands, and spoons. 

Students identify and analyze how levers work by raising a brick with a shish kebab skewer. Students present their work, explaining what did and did not work, including illustrations of the lever lift from different angles. Students...

Students compare and contrast the three different types of levers. In this physics lesson, students hypothesize how ancient Egyptians use them to build structures. They construct their own lever after teacher approves their design.