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In this activity on page 5 of the PDF (Plants—The Green Machines), learners use chromatography to separate and identify pigments within various leaves.

$1 - $5 per student Ages 8 - 14 1 to 2 hours
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In this activity, learners use open inquiry to learn about the process of science as well as gain experience regarding the Law of Conservation of Mass, dissolution, and density.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners investigate soil conditions by creating a soil map. Learners record soil characteristics and compare the conditions of soil in different grid sections.

1 cent - $1 per student Ages 4 - 14 1 to 2 hours
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In this activity (Page 22 of PDF), learners investigate the evolution of wheat by washing different types of dough with water and comparing the results.

$10 - $20 per group Ages 8 - adult 1 to 2 hours
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In this activity, learners investigate visual perception as well as plan and conduct their own experiments.

1 cent - $1 per group Ages 8 - 18 1 to 2 hours
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In this activity (Page 25 of PDF), learners investigate the evolution of wheat by creating dough from different flours, observing the samples of dough as they rise, and then baking the dough.

$10 - $20 per group Ages 8 - adult 1 to 2 hours
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In this activity (on pages 30-36), learners simulate a dig for ancient pollen, to experience how paleobotanists study fossilized pollen in rocks to learn about early geological and climatological even

$10 - $20 per group Ages 8 - 14 1 to 2 hours
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In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.

$5 - $10 per student Ages 8 - 18 1 to 2 hours
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In this activity about human interface design issues, learners help the Oompa-Loompas of a great chocolate factory solve different problems.

free Ages 8 - 18 1 to 2 hours
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This activity (on page 2 of the PDF under SciGirls Activity: Hockey) is a full inquiry investigation into how a hockey stick’s flex affects shooting power and accuracy.

Over $20 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners collect, categorize, weigh and analyze classroom trash and discuss ways that engineers have helped to reduce solid waste.

$1 - $5 per group Ages 8 - 11 1 to 2 hours
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In this activity, learners create 3D geometric shapes using straws and pipe cleaners.

$1 - $5 per student Ages 8 - 18 1 to 2 hours
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In this activity, learners explore the concept of conducting or insulating electricity.

$5 - $10 per group Ages 8 - 11 1 to 2 hours
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In this physical sciences activity, learners explore how passive solar design increases energy efficiency.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity (on pages 18-28), learners explore how the shape of seeds affects how they are dispersed by wind, birds, ocean currents and other means.

$5 - $10 per group Ages 8 - 14 1 to 2 hours
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In this activity (posted on April 18, 2011), learners follow the steps to construct a zoetrope, a device that produces an illusion of action from a rapid succession of static pictures, using a 16" bik

Over $20 per group Ages 8 - 18 1 to 2 hours
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Learners compare a life-size drawing of a Tyrannosaurus rex head and a full-size Sinornithosaurus body to understand that dinosaurs varied in size.

1 cent - $1 per group Ages 8 - 11 1 to 2 hours
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In this two-part activity about luminescence, learners explore the chemistry that happens inside glow sticks and other light producing reactions.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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This activity helps learners visualize the Human Immunodeficiency Virus (HIV) by constructing three-dimensional HIV particle models from paper.

1 cent - $1 per student Ages 8 - 18 1 to 2 hours
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In this activity, learners explore how watermills have helped harness energy from water through the ages.

$10 - $20 per group Ages 8 - 18 1 to 2 hours