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In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

In this multi-part activity learners examine non-point water pollution.

Plants need nutrients to grow. This is why we apply fertilizers to grass and food crops. In this activity, learners will explore how fertilizers can affect lakes and other bodies of water.

In this online activity, learners adjust mountain snowfall and temperature to see how glaciers grow and shrink. They will use scientific tools to measure thickness, velocity and glacial budget.

Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

In this outdoor activity, learners investigate the relationship between the slope of a trail and soil erosion.

In this outdoor activity, learners search for lichen, a combination of a fungus and an alga living together. Lichen grow where most other plants cannot, on rocks, the trunks of trees, logs and sand.

In this activity, learners explore how the power of the sun can be harnessed to heat and cool a building.

In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs.

Millions of organisms can live in and around a body of water.

Did you know that a Slinky makes a handy model of earthquake waves?

In this activity, learners create models of erosion and floods and learn to recognize both in their environment.

In this activity, learners simulate nature's water filtration system by devising a system that will filter out both visible and invisible pollutants from water.

In this activity, learners eat a snack and make a model of the plumbing system of a volcano.

In this outdoor activity/field trip, learners investigate organisms that live along the ocean's rocky coast.

In this quick and easy activity and/or demonstration, learners use two empty 2-liter bottles and hot tap water to illustrate the effect of heat on pressure.

Learners build a solar oven from a cardboard pizza box, aluminum foil and plastic. Learners can use their oven to cook S'mores or other food in the sun.

In this activity, learners use simple items to construct a device for indicating air pressure changes.

This is a quick activity that shows how large amounts of rock and sediment are added to the edge of continents during subduction.

In this activity, learners explore the engineering behind seismographs and how technology has improved accurate recording of earthquakes.