In this activity, children explore differences in soil types and composition.
Doing the Activity
Who doesn’t like getting their hands a little dirty? The next time a child in your care decides to dig a hole in the ground, turn it into an educational opportunity. Describe to children that you will conduct an experiment to analyze the soil sample they have just collected.
As you dig and collect soil samples, ask:
- What do trees and other plants get from soil? If so, why?
- Do different plants have different soil needs?
- Describe the soil: What color is it? How does it smell? How does it feel?
Have children make a “soil shake” by placing one half cup of soil into a jar with a lid and adding two cups of water. Ask them to predict what will happen if they shake the closed jar and let it settle for a few hours. Then, try it.
Over time, soil layers will become visible. Gravel will fall first; then sand, silt, and clay; organic matter (leaves, twigs, stems) will remain floating in the water. Have children draw a picture of the layers formed by their soil shake, or collect and test soil samples from other areas (forest, field, yard) for comparison.
Challenge children to complete the “Soil Composition” diagram, reminding them that the largest particles fall to the bottom first.
Get permission before taking soil samples. Use plastic jars, if possible.
Get the Full Activity
This family activity is adapted from Project Learning Tree’s PreK-8 Environmental Education Activity Guide which can be obtained through an in-person professional development workshop or online course.
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