How to Make a Catapult: Lesson for Kids

Instructor: Deborah Stone

Deborah has taught middle level science and master's and doctorate level education leadership and environmental science.

Let's look at a quick and easy catapult activity. We'll use a small milk carton, a plastic spoon, one bag of mini-marshmallows, and rubber bands to engage in a high-flying, mini-marshmallow launching extravaganza.

What Is a Catapult?

What do you think of when you hear the word catapult? Well, these machines were created to launch objects, often as a weapon in battle. Interestingly, the Greeks were the first to write about these machines, so we get the word catapult from the Greek word katapultos. Long ago in ancient times, defenders of castles built catapults to launch large boulders or rocks and sometimes hot tar to defeat their enemies. Now that times have changed, we can use the same science to launch mini-marshmallows with a milk carton catapult.

Ready to put your science skills to work? Follow the instructions below to construct your very own catapult and launch yourself into some some science fun!

Catapult 350


  • milk carton
  • plastic spoon
  • toothpicks
  • pencils or wooden grill skewers
  • rubber bands
  • mini-marshmallows
  • tape
  • scissors
  • small piece of aluminum foil


Begin by gathering all your materials. Then read over the step-by-step instructions.

To unlock this lesson you must be a Member.
Create your account

Register to view this lesson

Are you a student or a teacher?

Unlock Your Education

See for yourself why 30 million people use

Become a member and start learning now.
Become a Member  Back
What teachers are saying about
Try it risk-free for 30 days

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Create an account to start this course today
Try it risk-free for 30 days!
Create an account