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This is a comprehensive lesson plan on page 85 for a group cleanup trip to a local beach, lake or stream. Learners keep track of the types and amounts of trash picked up and analyze this information.

$5 - $10 per group Ages 14 - 18 1 to 7 days
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In this activity, learners construct a robot-like hand to demonstrate how data is collected when using robotic technology.

$5 - $10 per group Ages 8 - 11 1 to 2 hours
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In this activity, learners create a colorful foam fountain by adding yeast to a chemical reaction. This activity introduces chemical reactions to young learners and teaches the concept of catalysts.

$5 - $10 per group Ages 4 - 11 10 to 30 minutes
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In this activity, learners investigate how plants use water. By making the flowers change color, learners see how water moves up the stem to the leaves and the flowers.

$5 - $10 per group Ages 6 - 11 4 to 24 hours
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Learners create their own piece of history by decorating, shattering, and piecing together a flowerpot "artifact".

$5 - $10 per student Ages 6 - 14 1 to 2 hours
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In this experiment, learners work in pairs to create two gloves -- one that contains a layer of shortening (blubber) inside, and one that doesn't.

$5 - $10 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses.

$5 - $10 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners find out why some mineral sunblock rubs in clear. Learners compare nano and non-nano sunblocks and discover how particle size affects visibility.

$5 - $10 per group Ages 4 - adult 5 to 10 minutes
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In this activity, learners determine the necessary conditions for pea seed germination.

$5 - $10 per group Ages 8 - 11 1 to 7 days
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In this activity, learners create their own obstacle course based on Bernoulli's Principle and try to get a floating ball from the start of their course to the finish line.

$5 - $10 per group Ages 6 - 18 30 to 45 minutes
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In this kitchen chemistry activity, learners explore the chemistry of crystals by making sugar crystals, consider a common chemical reaction type responsible for the rising of muffins and cake in the

$5 - $10 per group Ages 8 - 14 1 to 7 days
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Learners conduct two activities to investigate two properties of liquids: density and viscosity. In a clear container, learners stack 7 different liquids which will layer according to their density.

$5 - $10 per group Ages 11 - 14 30 to 45 minutes
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In this physics activity (page 4 of the PDF), learners will explore how similar magnetic poles repel one another. They will rely on linear induction to race magnets around a simple course.

$5 - $10 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners construct a rocket powered by the pressure generated from an effervescing antacid tablet reacting with water, and build a launch pad for their rocket.

$5 - $10 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners explore the engineering design process and the basic mechanics behind building bridges as they build one themselves using gumdrops and toothpicks.

$5 - $10 per student Ages 8 - adult 30 to 45 minutes
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Learners experiment with a commercially available liquid-crystal coaster. They warm the material with their hands for varying lengths of time and observe the changing colors that result.

$5 - $10 per group Ages 4 - 14 5 to 10 minutes
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In this activity (posted on March 14, 2011), learners follow the steps to construct a camera projector to explore lenses and refraction.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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The Chinese invented paper made from plants and cloth about 2,000 years ago. Learners follow a similar process to make paper from recycled paper.

$5 - $10 per student Ages 8 - 14 4 to 24 hours
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In this activity, learners make an electromagnet motor to demonstrate the most basic method of changing electrical energy into mechanical energy.

$5 - $10 per group Ages 14 - 18 45 to 60 minutes
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In this activity, learners explore physics by building a catapult that launches marshmallows with household objects.

$5 - $10 per student Ages 8 - adult 30 to 45 minutes