Science Projects for Kids: Soil Experiments

Who Needs Dirt?

Who Needs Dirt? In this science project, you can teach kids to grow a sweet potato plant without soil -- all you'll use are toothpicks and water.

How to find out Who Needs Dirt?

What You'll Need:

  • Toothpicks
  • Sweet potato
  • Glass
  • Water

Step 1: Insert three toothpicks around a sweet potato near the large end so they stick out to the sides in different directions.

Step 2: Fill a glass most of the way with water. Put the sweet potato into the glass small-end first, and rest the toothpicks on the rim so they hold up the sweet potato. There should be enough water in the glass so that about 3/4 of the sweet potato is covered.

Step 3: Put the jar in a sunny spot for several days. Add water as needed. Soon you will have a beautiful vine growing from the top of the potato.

Lowdown on Dirt is a science project that teaches kids to compare different kinds of soil and determine which is better. Read about Lowdown on Dirt on the next page of science projects for kids: soil experiments.

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