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Fragile Waters
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In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker.

It's a Gas!
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In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle.

Making With Microbes
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In this design challenge, learners will use microbes to design and grow a custom biomaterial at home and make something creative with it.

Design For All: Imagining Inventions
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In this design challenge, learners will practice empathy and design thinking skills by creating an invention of the future.

Exploring Tools: Special Microscopes
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In this activity, learners use a flexible magnet as a model for a scanning probe microscope (SPM). They learn that SPMs are an example of a special tool that scientists use to work on the nanoscale.

Rumination
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In this activity (on pages 24-34), learners explore the four-part stomach of cows (and other grazing animals called ruminants), and compare it to the human one-part stomach and its digestive process.

A Model Parasite
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In this detailed activity (on pages 9-18), learners investigate the body parts of a parasitic ascaris worm by making and dissecting clay models.

Using Food Labels
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In this nutrition activity, learners explore food labels and consider the nutritional value of foods. Learners also explore units of measurement commonly used on food labels.

Odors Aloft
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Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

Vital Signs
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This activity (on pages 16-23) lets learners measure each other's vital signs—the signs that help doctors understand what's going on in a patient body.

Kool Colors
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Learners investigate how temperature affects the rate of chemical reactions by observing how steel wool reacts with various types of Kool-Aid solutions at different temperatures.

Pendulum Fun
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In this activity, learners will explore pendulum motion through scientific trials by using household items with different length strings.

Ice Melt
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In this activity, learners will explore basic information about thermodynamics by experimenting with ice. Learners will compare ice melting rates on metal pans or plastic cutting boards.

Exploring Materials: Thin Films
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In this activity, learners create a colorful bookmark using a super thin layer of nail polish on water. Learners discover that a thin film creates iridescent, rainbow colors.

Crank It Up
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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

Workin' It Out
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In this activity, learners explore how to stay fit the fun way. Learners participate in three physical activities.

Insulation Station
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In this physical sciences activity, learners explore insulation. Leaners investigate how insulation can be used to slow down the conduction of heat from one side of a wall to the other.

Rocket Reactions
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The "Rocket Reactions" activity is an exciting way to learn about how materials interact, behave, and change.

Great Openings: Slots, 35 Sense, and Hole In One
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These three short activities challenge groups to fit objects through paper and index cards: "Slots" presents the challenge for one learner to figure out which objects fit through a hole cut by another

Water Wire: Electricity Flowing Through Water
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In this activity on page 10 of the PDF, learners detect the amount of energy that can flow through a sodium chloride electrolyte solution with a light sensor.