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In this simulation, learners use M&M™ candy to explore radioactive isotope decay.

Get a roll of pennies, throw them on the ground, then remove those that only show tails, and repeat with the ones left over.

Learners design their own experiment to determine conditions that either help or hinder the decomposition of carrots by soil microbes.

In this activity, learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.

In this activity (page 1 of the PDF under SciGirls Activity: Bogs), learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.