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This lesson will helps learners answer the question: How does the bombardment of micrometeoroids make regolith on the moon?

In this activity (on pages 13-16 of the PDF) learners investigate three mystery samples to see which one contains life. The three samples are sand, sand and yeast, and sand and antacid.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.