DIY Marble Run

Kids experiment and build critical thinking skills in this fun STEM activity.

What You’ll Need:

  • Carboard boxes
  • Empty toilet paper and paper towel rolls
  • Other recyclables: Egg cartons, empty milk containers, etc.
  • Painter’s tape
  • Marbles
  • Scissors
  • Unbreakable cup, bowl or basket to catch the marble

What You’ll Do:

Step 1. Gather materials
Step 2. Find clear wall space
Step 3. Make a plan (older kids may want to draw it first)
Step 4. Start building the marble run by taping the cardboard and recycles on the wall
Step 5. Test, learn, make adjustments along the way
Step 6. Drop the marble in the top of the contraption and see if it can make it into the cup, bowl or basket without falling onto the floor

Safety Tip! Because of the marbles, we don’t recommend this activity for young children or recommend using alternatives like ping pong balls or pom poms. Make sure all kids keep marbles out of their mouths, ears and noses!


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10 West Seventh Street
St. Paul, MN 55102

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