Cornell University
Catapult
Studying levers couldn't be more exciting! Learners build their own catapults and test the results as they make adjustments to the fulcrum. They compete against other groups to create the most accurate apparatus.
Museum of Science
Water Balloon Catapult
Fire away! Using a couple of milk jugs, a dowel rod, and a yardstick, individuals build catapults to throw water balloons. Learners notice that the catapult is a simple machine. By making a target, the class has a chance to refine their...
Cornell University
Catapults
Ready, aim, fire! Launch to a new level of understanding as scholars build and test their own catapults. Learners explore lever design and how adjusting the fulcrum changes the outcome.
Curated OER
Catapults
Students discover the catapult. For 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.
Curated OER
Simple Machines, Odd Machines
Students recognize and identify common objects that can be used as a lever. For this simple machines lesson, students experiment with materials to design and construct a machine that uses a lever. Students also design and build a catapult.
Berkeley Engineering and Mentors
Marshmallow Catapaults
After a brief lecture on levers, torque, projectiles, and the five-step engineering design cycle, young physical science learners or engineers build catapults out of craft sticks. This is an open-ended exploration of what works and what...
Curated OER
Exploring Levers
Students examine the parts of a lever system and their functions. For this simple machines lesson students study the different classes of levers and what they are used for.