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  • Do you want to build a rocket?!
  • Post author
    Jennifer Muhm
  • STEM Projects

Do you want to build a rocket?!

Looking for some fun kid activities for winter break? Here’s one we love!

These little rockets use Alka Seltzer and water to make the fuel they need to launch into the air. But first, design and build your rocket using a simple 35mm film canister and other items often found around the house – a fun project for kids and adults to do together!  

Supplies Needed:

  • Film canister (like a Fuji 35mm film canister – without a lip on the outside; empty film canisters can be purchased online)
  • Paper
  • Two coffee stir sticks
  • Tape
  • Scissors
  • Water
  • Alka Seltzer

Building Directions:

  • Remove lid from film canister (remove film if necessary).
  • Using the scissors, cut two wings and a half-circle out of the paper.
  • Tape the wings on either side of the film canister (opening of the film canister facing down).
  • Shape the half-circle into a cone and tape to hold its cone shape.
  • Tape the two coffee stir sticks to either side of the inside of the cone.
  • Tape the other end of the two coffee stir sticks to the film canister.
  • Your rocket is ready to launch!!

Launch Instructions:

To launch your rocket, you’ll need half of an Alka Seltzer tablet broken into two quarters and some tap water.

  • Remove the lid from the film canister, and place the two pieces of Alka Seltzer tablet inside.
  • Fill about 1/3 to 1/2 full with tap water.
  • Place the cap back on the film canister.
  • Place your rocket on the ground (on a hard surface like a driveway or patio).
  • Countdown as your rocket fizzes toward its launch!
  • Watch your rocket pop into the air!!

Rockets can be reused for multiple launches.

We loved this activity and hope that you will, too!!

Gift Idea: Give a Rocket T-Shirt, Space Dress, or Space Leggings with the supplies to make her own Alka Seltzer Rocket!!

  • Post author
    Jennifer Muhm
  • STEM Projects

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