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Parasite Sleuth
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In this activity (on pages 26-33), learners play parasitologists, solving several "mysteries" about people who got sick from various parasites. In teams of four, each member solves one mystery.

Servings and Choices
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In this nutrition activity (page 16 of PDF), learners document their individual eating habits and learn whether their eating patterns meet their needs.

Make Your Own Petroglyph
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In ancient Chaco Canyon, the people used a "sun dagger" petroglyph to mark the passing of seasons.

Biotechnology Through Time
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In this activity, learners investigate the history and development of agricultural biotechnology.

Water: A Basic Ingredient
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In this activity, learners explore healthy choices related to the liquids they drink. The importance of water and milk as essential nutrients for a healthy body is the focus of the experience.

The Wave
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In this multi-step experiment (page 4 of pdf), learners study tide pools, and then drop a "wave" (a 4-pound bag of beans or birdseed) on a shell to mimic the force of crashing surf on tide pool animal

Cool It
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In this outdoor activity/game, learners use thermometers to simulate how lizards survive in habitats with extreme temperatures.

Mystery Marauders
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In this outdoor, mystery-solving activity, learners work like detectives, gathering evidence to identify the culprits that are attacking plants.

Your Energy Needs
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In this activity about the relationship between food and energy (page 8 of PDF), learners estimate average daily baseline energy (Calorie) needs and energy needs for different levels of activity.

Building Blocks
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In this activity (page 32 of PDF), learners investigate the nutritional needs of healthy bones and muscles.

Who Can Harvest a Walleye?
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This activity focuses on interactions within Earth systems and the effects of human activities. In this activity learners build a biomass pyramid.

Double Horn
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In this activity, learners explore sound by constructing their very own instruments using PVC pipes, soda bottles, and a straw.

Muscle Fibers
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In this activity about human anatomy (page 20 of PDF), learners investigate the structure of muscles by comparing yarn and cooked meat.

Paper Drop Design Competition
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Using paper, paper clips, an index card, and tape, teams of learners design flying devices to (1) stay in the air as long as possible and (2) land as close as possible to a given target.

Help Wanted
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In this interactive board game, learners "hire" different types of scientists to help canine character Ruff Ruffman solve unusual problems.

Cleaning Water with Dirt
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In this activity on page 7 of the PDF (Water in Our World), learners make their own water treatment systems for cleaning water.

Testing Vitamin C: Chemistry's Clear Solution
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In this activity on page 8 of the PDF, learners investigate vitamin C. Learners conduct a chemistry experiment to determine if Tang drink mix or orange juice contains more vitamin C.

Sound Automata
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In this activity, learners build their own sound machines and explore the interplay of motion and sound.

Scent Tag
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In this matchmaking activity (on page 2 of the PDF under GPS: Animal Scent Activity), learners will each have a scented cotton ball taped to their shoulder. The scent (e.g.

Magnet Tower
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In this activity, learners build magnetic towers to explore the forces and properties of magnets.