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Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.

In this classic activity, learners investigate natural selection by becoming birds foraging for food on an island.

In this activity, learners explore sensors and focus specifically on how to measure humidity using a sensor.

In this game, learners match descriptions of marine debris (shoes, batteries, paper towels, etc.) to images of these items.

In this activity, learners explore how engineers design devices that can detect the presence of pollutants in the air.

In this activity, learners explore how environmental engineers might approach solving the problem of an oil spill.

In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).

In this outdoor activity, learners cut through and investigate rotten logs and then make log-profile puzzles for each other.

This is an activity where learners will discover what types and how many insects live in their own backyard.