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In this activity, learners working in pairs saturate a cotton ball using water drops from an eyedropper to demonstrate the high water capacity of clouds.

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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In this chemistry activity, learners use thin layer chromatography to determine the molecular composition of different markers.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners experiment with creating various types of bubble solutions and testing which ingredients form longer-lasting bubbles.

$10 - $20 per student Ages 11 - 14 45 to 60 minutes
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In this math lesson, learners learn how to construct stem and leaf plots. Learners first estimate the number of drops of water that will fit on the head of a penny.

1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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In this fun hands-on activity, learners whip up a batch of cyber-dough (play dough) using math for measurements.

$1 - $5 per student Ages 4 - 11 30 to 45 minutes
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In this activity, learners create a garden in a disposable glove. They learn about the conditions necessary to make the seeds sprout and actively participate in caring for their plants.

$10 - $20 per group Ages 6 - 11 1 to 4 weeks
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In this activity, learners explore how the hull shape impacts a ship's performance and stability.

$10 - $20 per group Ages 11 - 18 2 to 4 hours
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In this activity, learners investigate color vision as well as plan and conduct their own experiments.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this experiment with planaria (a type of flatworm), learners will investigate the capability of different body sections to regenerate.

$5 - $10 per student Ages 11 - 18 1 to 4 weeks
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This lab activity has learners create a pendulum with a one-second period.

$1 - $5 per student Ages 11 - adult 45 to 60 minutes
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In this activity, learners examine baking powder, a combination of three powders: baking soda, cream of tartar, and cornstarch.

1 cent - $1 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners investigate and compare the rate of drying in different conditions.

$1 - $5 per group Ages 6 - 11 30 to 45 minutes
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Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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Groups of learners are provided with a generic car base and an egg. Their mission: design a device/enclosure to protect the egg on or in the car as it rolls down a ramp with increasing slopes.

Over $20 per group Ages 11 - 18 1 to 2 hours
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In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).

1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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Learners will compare the growth rate and appearance of crystals forming on small rocks to those growing on miscellaneous objects. Learners will also investigate how temperature (warm vs.

$1 - $5 per group Ages 8 - 14 1 to 7 days
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In this activity, learners build a "pneumatic trough," a laboratory apparatus used for collecting pure gas samples over water.

$10 - $20 per student Ages 14 - adult 30 to 45 minutes
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This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.

$1 - $5 per group Ages 14 - 18 45 to 60 minutes
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This is an activity (located on page 3 of the PDF under Water Clean-up Activity) about the use of reduction agents to decontaminate ground water.

$10 - $20 per group Ages 8 - 14 2 to 4 hours
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In this activity, learners investigate the properties of different types of balls.

free Ages 8 - 11 1 to 2 hours