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In this activity, learners explore a scale by comparing objects, which look similar but have different weights. Learners predict and then measure the weights of various objects using a scale.

free Ages 4 - 6 10 to 30 minutes
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In this engineering activity, young learners investigate multi-level buildings.

1 cent - $1 per student Ages 4 - 6 30 to 45 minutes
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Build a fruit fly trap out of a 2-liter plastic bottle and some rotten fruit! Fruit flies are easy to catch in warm weather. Once you catch some, you will be able to see their life cycle up-close.

1 cent - $1 per student Ages 4 - 11 1 to 4 weeks
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Choose a recipe to double (or triple, quadruple, or halve). Show everyone the recipe and engage them in figuring out: How much will we need to increase the recipe to feed everyone?

1 cent - $1 per group Ages 4 - 14 30 to 45 minutes
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In this activity, learners will explore saturated solutions and discover how crystals form.

$1 - $5 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners observe, explore and investigate vibrating instruments in everyday places and create music in unique ways.

$1 - $5 per group Ages 4 - 8 5 to 10 minutes
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In this activity, learners model the flow of energy from the sun as it enters a photovoltaic cell, moves along a wire and powers a load.

$5 - $10 per group Ages 4 - 11 10 to 30 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
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In this activity, learners will investigate the part of soil. Explore how clay, silt, and sand make up the dirt in your background. Activity includes step-by-step instructions and extension ideas.

free Ages 4 - adult 10 to 30 minutes
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In this activity, learners explore the chemical reaction between water and effervescent antacid tablets. This hands-on activity models how a material can act differently when it's nanometer-sized.

$1 - $5 per group Ages 4 - adult 5 to 10 minutes
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In this activity, learners use clear nail polish to create a beautiful iridescent pattern on black paper. Learners discover that a thin film creates iridescent, rainbow colors.

$1 - $5 per group Ages 4 - adult 5 to 10 minutes
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In this activity, learners will create their very own constellation.

1 cent - $1 per student Ages 4 - 14 5 to 10 minutes
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In this activity, learners will explore light and rainbows with this easy setup! Learners will only need a cup of water, some paper and a flashlight.

$1 - $5 per group Ages 4 - 14 Under 5 minutes
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In this activity, learners observe color mixing and absorbency using colored tissue paper and spray bottles.

$1 - $5 per group Ages 4 - 8 10 to 30 minutes
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In this activity, learners follow a recipe to create play dough scented with fruit-flavored drink mix.

$1 - $5 per group Ages 4 - 8 30 to 45 minutes
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In this hands-on activity, learners simulate the crashing and smashing of a meteor impact using household cooking supplies.

$1 - $5 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners will build a honeycomb. Learners will investigate how the shape of the honeycomb develops. Activity includes step-by-step instructions and extension ideas.

1 cent - $1 per student Ages 4 - adult 10 to 30 minutes
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In this online activity, learners test their ability to hear different frequencies and compare their frequency range with the frequency range of other animals and insects.

free Ages 4 - 11 5 to 10 minutes
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In this demonstration, learners will be "wowed" as three matches burn to form a triangular pyramid shape and "magically" rise off the table.

1 cent - $1 per group Ages 4 - adult Under 5 minutes
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In this activity (on page 2) about fingerprint analysis, learners use graphite from a pencil and scotch tape to capture their fingerprints.

$1 - $5 per group Ages 4 - 14 5 to 10 minutes