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In this activity, learners examine how brine shrimp populations can survive in some of the harshest environments.

In this activity, learners investigate the different salinity levels of oceans, rivers and estuaries.

In this outdoor, night activity, learners track nocturnal animals' footprints, droppings and other signs of their presence.

Using zebra mussels (Dreissena polymorpha), elodea and an indicator dye, learners study the role of light in photosynthesis.

This lesson introduces learners to the world of nematodes (roundworms).

In this activity (page 2 of pdf), learners craft a model of a skate egg case and come to understand that cartilaginous fish such as sharks and shakes employ reproductive strategies that differ from th

In this activity, learners will build a design and build a place for pollinators to drink from.

This is a comprehensive lesson plan on page 85 for a group cleanup trip to a local beach, lake or stream. Learners keep track of the types and amounts of trash picked up and analyze this information.

After an interest-generating discussion about "dirt" and microbes, learners select and collect soil samples from a variety of locations (schoolyard, home, etc.).

This is an activity (located on page 3 of PDF under Where's Nano? Activity) about identifying nanoscale objects and phenomena in today's world.

In this activity, learners discover the three R's of environmental protection: reduce, reuse, and recycle.

Learners work in teams to design and build solar water heating devices that mimic those used in residences to capture energy in the form of solar radiation and convert it to thermal energy.

Did you know that the water we use today is the same water found on Earth millions of years ago? The Earth constantly uses and recycles water in a process called the water cycle.

In this construction activity, students use a 2-liter bottle to build a fly trap.

This activity (located on page 4 of the PDF under GPS: Sea Turtles Activity) is a full inquiry investigation into testing a repair material.

In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.

This activity offers learners and their families several ways to raise their awareness together about home water.

In this activity, learners determine the necessary conditions for pea seed germination.

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

In this activity, learners plant seeds and watch them sprout and grow inside a CD case.