Dead Diatoms Do Tell Tales

This activity engages learners to make a model of sediment cores using different kinds of glass beads and sand. They learn how to examine the types, numbers, and conditions of diatom skeletons in the model sediment cores and tell something about the hypothetical paleoclimate that existed when they were deposited. The students get to be climate detectives.

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LuAnn Dahlman
Activity takes 2 to 3 hours. Additional materials required.

Notes From Our Reviewers

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Teaching Tips

Teaching Tips

The teacher guide (leader notes) for all the Andrill activities are at They are not as complete as they should be.

Instructions on how to order the materials needed for the entire Antarctica's Climate Secrets are at

Students should have no problem following the clear and well written directions.

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