Materials Required:
Clear plastic cups or bowls (one per student)
Chocolate pudding (to represent bedrock)
Crushed chocolate cookies (to represent parent material)
Gummy worms (to represent organic matter in topsoil)
Crushed graham crackers (to represent subsoil)
Colored jelly (to represent various mineral layers)
Small candies (optional, to represent rocks or pebbles)
Spoons for layering and eating
Napkins
Steps Involved:
Prepare the Ingredients: Ensure that all edible materials are ready and set up in different bowls for easy access.
Layer the Bedrock: Begin by adding a layer of chocolate pudding to the bottom of the clear plastic cup or bowl. Explain that this represents the bedrock, the solid layer of rock beneath the soil.
Add the Parent Material: Next, add a layer of crushed chocolate cookies on top of the pudding to represent the parent material, which is the broken-down rock that forms soil.
Create the Subsoil: Add a layer of crushed graham crackers to represent the subsoil, which lies beneath the topsoil and contains minerals.
Layer the Topsoil: Add gummy worms on top of the graham crackers, representing the organic matter found in the topsoil, where plants grow.
Finish with the Mineral Layer: Add colored jelly to represent various minerals and nutrient layers found in the soil.
Optional: Add small candies on top to represent rocks or pebbles found in soil.
Discuss the Layers: Before eating, have students explain the layers they created and how each edible item represents a part of the soil structure.
Dig and Eat: Finally, allow students to “dig” into their soil with spoons and enjoy eating the layers they built.
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