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In this activity, learners construct a home-made journal with simple, everyday materials.

1 cent - $1 per group Ages 4 - adult 10 to 30 minutes
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In this activity, learners will exercise their imaginations and artistic skills. Appropriate for all ages, learners will create unique pieces to jumpstart storytelling sessions.

$1 - $5 per group Ages 4 - adult 45 to 60 minutes
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An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens.

$1 - $5 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners of all ages can become food scientists by experimenting with flour and water to make basic pasta.

$1 - $5 per group Ages 4 - adult 45 to 60 minutes
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In this activity, learners will explore engineering concepts to construct a blanket fort using materials sourced from home.

free Ages 4 - adult 10 to 30 minutes
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This activity offers learners and their families several ways to raise their awareness together about home water.

free Ages 4 - adult 1 to 7 days
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In this activity, learners use simple, everyday materials to experiment with balls and ramps.

Ages 4 - adult
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In this activity, learners will explore light with reflective surfaces. Learners will make predictions and share their observations as they experiment with directing a beam of light.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes
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In this activity, learners use found natural materials to create a water haven for bees and other insects.

free Ages 4 - adult 10 to 30 minutes
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Some animals can swallow food whole, but humans have to chew. In this activity, learners will investigate what saliva does chemically to food before we even swallow.

$5 - $10 per group Ages 6 - adult 30 to 45 minutes
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This lesson (on pages 15-24 of PDF) explores how sound is caused by vibrating objects. It explains that we hear by feeling vibrations passing through the air.

$1 - $5 per group Ages 4 - 18 10 to 30 minutes
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In this activity (11th activity on the page), learners use pennies to test their hearing acuity.

free Ages 6 - 18 10 to 30 minutes
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This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.

$1 - $5 per group Ages 4 - adult 5 to 10 minutes
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In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

$1 - $5 per group Ages 4 - 18 5 to 10 minutes
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In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

Over $20 per group Ages 6 - 18 45 to 60 minutes
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In this quick activity/demonstration (5th on the page), learners explore depth perception.

free Ages 6 - 18 Under 5 minutes
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In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

1 cent - $1 per student Ages 6 - 18 5 to 10 minutes
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This hands-on activity demonstrates how a material can act differently when it's nanometer-sized.

$1 - $5 per group Ages 6 - adult Under 5 minutes
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In this chemistry demonstration, learners investigate the rule "likes dissolve likes" by combining three, immiscible liquids to create a colorful density column.

$1 - $5 per group Ages 6 - 18 Under 5 minutes
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This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.

$1 - $5 per group Ages 4 - adult 5 to 10 minutes