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This outdoor activity/field trip requires a place where minnows swim, such as a local pond or brook.

Dig a hole, line it, fill it with fresh water, and you have a water hole: a good place to study colonization.

In this activity, learners explore how salt water freezes in comparison to fresh water.

In this activity, learners capture and observe planaria, which are worms that eat tiny pond critters.

In this outdoor activity/field trip, learners catch and observe water striders to explore their movement and feeding behaviors.

In this activity, learners create a sealed, mini ecosystem that supplies freshwater shrimp with food, oxygen, and waste processing for at least three months.

In this activity (on page 2 of the PDF under GPS: Biodiversity Activity), learners will pair up and take a notebook outdoors to a selected location to observe and record a list of living things that t

In this outdoor activity/field trip, learners explore an aquatic site such as a pond, lake, stream, river or seashore to find and investigate plants and animals that live in water.

In this outdoor activity/field trip, learners locate and study plants and animals in several freshwater pond habitats.