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In this activity, learners create a freshwater ecosystem in a large plastic bottle. Learners cut and prepare bottles, then fill with water, aquatic plants, snails and fish.

In this chemistry activity (page 8 of the PDF), learners will identify the instances of physical change, chemical change, and solutions while making homemade soda pop.

In the wild, small crustaceans known as brine shrimp live in marine habitats such as saltwater lakes.

In this four-day activity, learners grow bacteria and/or fungi from a variety of locations and compare the results.