Oklahoma Ag in the Classroom

Edible Soil

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  • clear plastic cups
  • breakfast cereal, some crushed, some whole
  • shredded coconut
  • 1/2 gallon milk
  • plastic spoons

Edible Soil Profile

  1. Explain that the plastic cup represents the parent material, the whole cereal represents the subsoil and the crushed cereal represents the topsoil. Sprinkle coconut on top to represent grass or other plant material.
  2. Students should wash their hands before making their own soil profiles.
  3. As you pour milk, explain that water moves through the soil in much the same way that milk moves through the cereal.

(enough for 18 students)

  • 2 c peanut butter *
  • 1 c honey
  • 3 c instant dry milk
  • oil
  • wax paper

Edible Clay

  1. Grease measuring cup with vegetable oil.
  2. Mix peanut butter with honey.
  3. Add instant dry milk, a little at a time, until mixture is stiff.
  4. Cover students’ desks with wax paper, and have students wash their hands.
  5. Spoon out the “edible clay” to each student and allow them to experiment and create with the clay.

* If you have students who are allergic to peanuts, you may substitute hazelnut or some other kind of nut butter.

  • dried cherries (organic material)
  • chocolate or butterscotch pudding (topsoil)
  • chunky peanut butter (subsoil) *
  • bananas (parent material)
  • rice cake (bedrock)

Layers of Soil Snack

Students will use the materials provided to build the layers of soil, as indicated at left.

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Oklahoma Ag in the Classroom

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Oklahoma Ag in the Classroom is a program of the Oklahoma Cooperative Extension Service, Oklahoma Department of Agriculture, Food and Forestry and the Oklahoma State Department of Education