Household Catapult

There’s nothing like catapulting marshmallows across the kitchen to get kids excited about engineering!

This is a great activity to experiment with! Be a scientist and try it different ways by changing the types of materials you use to see what works best.

Suggested Materials: 

  • Popsicle sticks (approximately 8)
  • Rubber bands  (at least 5)
  • Spoon (plastic or wooden is fine, experiment with both!)
  • Marshmallows
Catapult Materials

Step 1. Stack a few popsicle sticks together (about 6 sticks works well) and wrap rubber bands around each end. 

Step 2: Combine two more popsicle sticks and wrap another rubber band around just one end.

Step 3: Slide the larger stack of popsicle sticks, in between the open side of the other two sticks. 

Step 4: Secure the two parts together with another rubber band by wrapping it across the spot where the two sets of sticks meet so the rubber band makes an X.

Step 5: Secure a plastic spoon onto the arm of your catapult with another rubber band.

Step 6: Place a marshmallow on the spoon, pull down, and let go to send it soaring!

Try experimenting with different materials (sticks, chopsticks, pencils, erasers, larger spoons, etc..) to see if you can make your catapult work better.

Discussion Points:
What else can you find to safely launch across the room?
What object soars highest?
Which goes farthest? 

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