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In this outdoor activity, learners make models of homes that might protect small animals from the elements, then search living plants for real structures made by small animals.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes
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In this hands-on activity, learners use heat to shrink samples of polystyrene plastic (#6 recycle code). Learners compare the size and shape of the plastic pieces before and after shrinking.

1 cent - $1 per group Ages 6 - adult Under 5 minutes
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In this two-part outdoor activity, learners conduct a population census of squirting clams on a beach or mudflat, and investigate the clams' natural history.

$5 - $10 per group Ages 8 - adult 1 to 2 hours
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In this activity, learners build a simple solar oven out of household materials to melt chocolate and marshmallow between graham crackers--known as s'mores.

$5 - $10 per group Ages 8 - 14 1 to 2 hours
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In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this outdoor game, learners play the roles of gray or red squirrels gathering and storing a supply of food in "fall" and recovering enough of them to survive the "winter." Learners carry bags repre

$5 - $10 per group Ages 6 - 11 45 to 60 minutes
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Using electrolysis, learners produce hydrogen gas and oxygen gas from water molecules in a solution.

$10 - $20 per group Ages 6 - adult Under 5 minutes
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In this activity, learners observe mixtures of sand samples glued to note cards, and consider how sand can differ in size, shape, and color, and where it comes from.

1 cent - $1 per group Ages 4 - adult 10 to 30 minutes
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In this long-term activity, learners make a home for a colorful community of microorganisms.

$5 - $10 per student Ages 8 - 18 1 to 4 weeks
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Learners explore how recyclers take advantage of the different properties of materials, such as magnetism and density, to separate them from a mixture.

1 cent - $1 per group Ages 4 - 14 Under 5 minutes
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In this activity, learners will conduct an experiment to discover methods of reventing foot mold growth on food.

$5 - $10 per group Ages 4 - 11 1 to 4 weeks
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In this activity (on pages 11-14 of PDF), learners cut out pictures from magazines of foods that help make bones strong and glue the pictures to a paper bone.

1 cent - $1 per student Ages 4 - 11 30 to 45 minutes
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In this genetics activity, learners create and decode a “DNA recipe” for a dog by randomly selecting strips of paper that represent DNA.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this fascinating and fun experiment, learners use chemistry to identify a mystery powder and to solve a "crime," a process similar to that used by real forensic scientists.

$5 - $10 per group Ages 6 - 11 45 to 60 minutes
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Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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Learners mark their traits for tongue rolling, PTC tasting (a harmless, bitter chemical), and earlobe attachment on tree leaf cut-outs.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners will build a bee hotel for pollinators. Learners will explore building and ecology through this activity.

$1 - $5 per group Ages 4 - 14 10 to 30 minutes
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In this outdoor/indoor activity, learners collect ants and dirt to create an ant farm in a cup that they can observe over time.

$1 - $5 per group Ages 6 - 14 1 to 7 days
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Learners match puzzle pieces to outlines of a DNA strand. The puzzle pieces represent the four chemicals making up DNA base pairs: adenine, thymine, guanine, and cytosine.

$5 - $10 per group Ages 8 - 18 5 to 10 minutes
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In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.

$10 - $20 per group Ages 6 - 14 45 to 60 minutes