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An estuary is a body of water that is created when freshwater from rivers and streams flows into the saltwater of an ocean.

In this biology experiment, learners plant soybean seeds in plaster of Paris, witnessing firsthand the mighty power and ability of plants to grow in adverse conditions.

In this chemistry activity (page 1 of the PDF), learners will observe a physical change.

In this activity about physical stress (page 28 of PDF), learners discover that muscles and bones need to work to stay strong.

This activity (page 2 of the PDF under SciGirls Activity: Bogs) is a full inquiry investigation into decomposition.