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Dust Catchers
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In this activity related to indoor air pollution, learners build take-home dust catchers with wax paper and petroleum jelly.
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.
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.
Crank It Up
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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.
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.
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.
Do Plants Need Light?
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In this food science activity, learners conduct an experiment that demonstrates the importance of light to plants.
Hidden Alarm
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In this design challenge activity, learners invent a device that will make their friends and family ask, "What's buzzing?" Learners design an alarm with an on/off switch that is small enough to hide.
Lost Labels
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In this experiment, learners will conduct chemical and physical tests to identify mystery substances.
Investigating Starch
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In this activity (on pages 10-15), learners investigate starch in human diets and how plants make starch (carbohydrates) to use as their food source.
Safe Food Preparation
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In this activity about food safety and nutrition, learners investigate safe food preparation by making fruit ice cream.
Convenient Carrier
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In this design challenge activity, learners invent a convenient way for someone using crutches or a wheelchair to carry small personal items.
Another Bright Idea!
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In this activity on page 5 of the PDF, learners use their knowledge of energy and batteries to create homemade flashlights.
Generations of Traits
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In this hands-on activity, learners track and record the passage of colored "pompom traits" through three generations of gingerbread people.
Can Nutrients in Water Cause Harm?
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In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.
Headphone Helper
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In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear.
Print Hints
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In this physical sciences activity, learners explore how forensic investigators collect prints from a crime scene. Learners make hand impressions in damp sand and analyze the patterns they observe.
Safe in the Sun
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In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light.
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.