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Biodiversity of Feet
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This activity (on page 3 of the PDF under GPS: Biodiversity Activity) is a full inquiry investigation into biodiversity.

Single-Cell Life
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In this activity, learners create a soil and water model of a single-cell life environment and study living microorganisms.

Easy PEAsy Seed Germination
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In this activity, learners determine the necessary conditions for pea seed germination.

Gravestone Weathering
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In this activity (located on pages 9-14 of PDF), learners visit a cemetery to examine the distinguishing characteristics of rock weathering.

Animals in a Grassland
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In this outdoor, warm weather activity, learners use sweepnets to search a grassy area such as a large lawn or field, collecting small animals to find as many different kinds of animals as possible.

Natural Indicators
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Learners combine different plant solutions -- made from fruits, vegetables, and flowers -- with equal amounts of vinegar (acid), water (neutral), and ammonia (base).

Getting Windy
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In this activity, learners create and understand surface currents. Learners create example surface currents and discover how landmasses affect the current.

Feed the Birds
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Learners construct a bird feeder from re-used materials. After hanging their feeder, they keep a journal about what birds visit the feeder.

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

Piles of Paper: Estimate Paper Use
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In this activity, learners keep track of how much paper the group uses in a week. Build awareness of paper waste, while strengthening measurement and estimation skills.

Evolutionstechnik or Selection and Variation in the Egyptian Origami Bird (Avis papyrus)
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In order to examine the random nature of mutations and natural selection, learners "breed" clutches of Egyptian Origami Birds (Avis papyrus) using random number generators (dice and coins) to mutate s

Digging Into the Past
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This activity (on pages 23-27) lets learners simulate the work of scientists who take core samples of Earth's rocky layers to determine geological history.
River Catcher
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In this activity (located at the top of the page), learners make an easy river strainer and see what they can catch.

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

My Insect
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In this activity, learners use information gathered from a variety of sources to design and make their own insect.

Caller ID: The Frog - and Toad! - Mating Game
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This activity is a sensory experience that recreates the sounds of a pond at night.

Corals and Chemistry
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In this activity, learners investigate how increased carbon dioxide (CO2) emissions from the burning of fossil fuels is changing the acidity (pH) of the ocean and affecting coral reefs and other marin

Build A Dinosaur Nest
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In this outdoor activity, learners will gather natural materials outside that they think a dinosaur would want to lay its eggs in.

Weather Stations: Phase Change
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In this activity, learners observe the water cycle in action! Water vapor in a tumbler condenses on chilled aluminum foil — producing the liquid form of water familiar to us as rain and dew.

Trash Traits
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In this activity on page 24, learners perform experiments to examine whether or not trash can float, blow around, or wash away.