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Kids Indoor Winter Activity: Exploding Snowman

Exploding snowman activity in a Ziploc bag

Exploding Snowman Science Experiment

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?

Exploding Snowman – Video Tutorial

Did you love this winter science experiment? Check out some of our other kid-friendly winter activities:

New Horizon Academy is a nationally recognized early learning provider with over 90 schools in Minnesota, Colorado, Iowa, Idaho, and Kansas. Through play-based curriculum and high-quality daycare, New Horizon Academy schools nurture and prepare children to succeed in school and life.

Schedule a tour to learn more about our highly trained teachers, safe and secure facilities, and commitment to providing the highest quality care. Contact a New Horizon Academy childcare center near you today.

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