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Kids Indoor Winter Activity: Exploding Snowman

Kids STEAM Science Exploding Snowman

This simple STEAM experiment is an excellent project requiring only a few materials and steps for kids. It’s the perfect boredom buster for the freezing days where you’re stuck inside.

Materials Needed

  • Sandwich Bag
  • Permanent Markers
  • Baking Soda
  • Vinegar
  • Paper Towel


  1. Give the sandwich bag to your kid to decorate with permanent markers. This is a good opportunity to teach your kid how to draw a snowman’s face.
  2. Wrap 3 tsp of baking soda inside a piece of paper towel or tissue.
  3. Place the baking soda packet inside the plastic bag.
  4. Pour about 1-2 cups of white vinegar into the sandwich bag and seal the bag quickly. It should swell up quickly.
  5. Stand back and watch it explode!

Takeaway Question: Why did the bag explode?

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