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In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.

$1 - $5 per group Ages 4 - 14 45 to 60 minutes
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In this activity, learners use Jell-O to explore lenses. Learners cut Jell-O into convex and concave lens shapes and examine how light exits each lens in a darkened room.

$1 - $5 per student Ages 14 - 18 30 to 45 minutes
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Learners explore how the attractive forces between water molecules create surface tension and allow certain objects to float on the surface of water.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity about physical stress (page 28 of PDF), learners discover that muscles and bones need to work to stay strong.

$1 - $5 per group Ages 6 - 11 1 to 4 weeks
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Learners will explore the chemistry of mucous and its importance to our health by following a process to make their own replica "snot." The activity includes a time and age recommendation, a materials

$1 - $5 per group Ages 6 - adult 10 to 30 minutes
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In this activity about combustion and energy, learners observe a burning candle in a sealed jar and the burning of white sugar.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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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 about the human heart (on page 5 of the PDF), learners work in teams to simulate the volume of blood moved through the circulatory system by transferring liquid into--and through--a s

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this Bob the Builder(TM)-themed activity, learners explore the 3Rs (Reduce, Reuse, Recycle) by rotating through several activity stations.

$1 - $5 per group Ages 4 - 6 30 to 45 minutes
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Over the course of several days, learners explore the property of water that helps plants move water from roots to leaves or gives paper towels the capacity to soak up water.

$1 - $5 per group Ages 8 - 14 1 to 7 days
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In this math activity, learners collect, organize, and analyze a set of data related to types of animals in the temperate forest.

$1 - $5 per group Ages 6 - 8 1 to 7 days
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In this activity, learners will measure their lung capacity by making their own spirometer. Learners will then explore factors that affect the amount of air the lungs can hold.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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This is a fun activity about the power of the Sun and the importance of using sunscreen to protect your sensitive skin from its rays.

$1 - $5 per student Ages 4 - 11 4 to 24 hours
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In this activity, learners explore dinosaur skeletons and anatomy. Learners make observations about a T. rex skeleton diagram and then measure the skeleton length and width.

$1 - $5 per group Ages 6 - 8 45 to 60 minutes
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In this environmental science activity (page 4 of the PDF), learners use vinegar and chalk to observe the effect of acid rain on various building materials and plant life.

$1 - $5 per group Ages 6 - 14 4 to 24 hours
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In this activity, learners create a map showing the origins of spices and herbs from a favorite recipe(s). Learners first research the origins of the ingredients and then locate them on a world map.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners investigate variations in human traits. This allows learners' natural curiosity about their identity to draw them into the study of heredity.

$1 - $5 per student Ages 8 - 18 2 to 4 hours
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Learners participate in a variety of activities modeling different disabilities.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.

$1 - $5 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners make a 3-D model of DNA using paper and toothpicks. While constructing this model, learners will explore the composition and structure of DNA.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes