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In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.

In this outdoor activity, learners search for the warmest and coolest, windiest and calmest, wettest and driest, and brightest and darkest spots in an area.

In this activity, learners examine the different materials gardeners add to their soil, and discuss how these materials are important for plant growth.

In this outdoor activity, learners make their own organic-rich soil. Depending on where this activity is done, learners will probably discover that their local soil is low in organic matter.

In this outdoor activity, learners compare the moisture released from different kinds of leaves and from different parts of the same leaf, by observing the color change of cobalt chloride paper.

In this outdoor, ocean-side activity, learners investigate the distribution of organisms in the upper region of the intertidal zone.

Learners create a model of a wetland to observe how it absorbs and filters water from the environment.

In this activity (on page 7), learners explore the meaning of a "carbon sink." Using simple props, learners and/or an educator demonstrate how plants act as carbon sinks and how greenhouse gases cause

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

Water treatment on a large scale enables the supply of clean drinking water to communities.

In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

In this outdoor activity, learners become beachcombers as they walk on a sandy beach in search of evidence of life.

In this lesson plan, learners examine some of the of greenhouse gas emissions sources in their community.

In this outdoor activity, learners go "can fishing" and discover the kinds of aquatic organisms that live in and on submerged cans.