Snowflake Science Experiment

The snowflake science experiment is a fun and educational activity that can captivate kids’ interest in science while teaching them about the unique properties of snowflakes. Here’s a step-by-step guide on how to conduct the experiment in a kids’ science class:

Materials Needed:

  1. Blue or black construction paper
  2. Scissors
  3. Magnifying glasses (optional but helpful)
  4. Cold water
  5. String or thread
  6. Pencil or straw
  7. White pipe cleaners
  8. Table salt (optional)


  1. Introduce the Concept: Begin by explaining to the kids that snowflakes are unique ice crystals that form in clouds when water vapor freezes. Each snowflake has its own intricate design, and no two are exactly alike. Tell them that they will be creating their own paper snowflakes to observe their unique patterns.
  2. Cut Snowflake Shapes:
    • Provide each child with a sheet of blue or black construction paper.
    • Instruct them to fold the paper in half diagonally to form a triangle.
    • Then, fold it again into a smaller triangle.
    • Help them cut out small shapes and patterns along the folded edges of the triangle. These cutouts will create the unique patterns of their paper snowflakes. Encourage them to be creative, but remind them not to cut all the way through, as you want the snowflake to remain in one piece.
  3. Unfold the Snowflakes: Carefully unfold the paper to reveal the full snowflake. Each child should have their own unique design.
  4. Discussion and Observation:
    • Have the kids use magnifying glasses to observe the intricate details of their paper snowflakes. Discuss how real snowflakes have similar unique patterns due to the way water molecules arrange themselves when they freeze.
    • You can also show them pictures of real snowflakes to compare their paper creations to the real thing.
  5. Create a Snowflake Mobile:
    • To make a snowflake mobile, poke a small hole in one of the snowflake arms using a pencil or straw.
    • Thread a piece of string or thread through the hole and tie a knot to create a loop for hanging.
    • Repeat this process for each paper snowflake.
    • Hang the snowflakes from a string or a wire hanger to create a beautiful mobile that can be taken home as a keepsake.
  6. Optional Salt Experiment: If you want to demonstrate how snowflakes form around tiny particles in the atmosphere, you can do a simple experiment. Fill a clear glass with cold water and add a pinch of table salt. Place an ice cube in the glass and observe as ice crystals form on the surface of the ice cube. Explain to the kids that the salt particles act as “seeds” for ice crystal formation, similar to how dust particles in the atmosphere can lead to snowflake formation.

This snowflake science experiment is not only fun but also educational, as it helps kids understand the beauty and uniqueness of snowflakes while introducing them to basic concepts of crystal formation and observation.

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