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In this activity, learners explore mammal locomotion by constructing flipbooks.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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In this very hands-on lesson, learners will investigate dendrochronology (the study of tree rings to answer ecological questions about the recent past) and come up with conclusions as to what possible

1 cent - $1 per group Ages 8 - 14 2 to 4 hours
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How do you measure a bubble when it's floating? You can't really, but in this activity, learners can measure the diameter of the ring of suds a bubble leaves on a flat surface.

1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners build and play three math games. In the first game, called "Switcheroo," learners place marbles in holes 1 through 4 and 7 through 10.

$1 - $5 per student Ages 6 - 14 1 to 2 hours
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In this activity, learners make a device called a phenakistoscope, which displays a continuously looping animation consisting of images drawn onto a spinning disc.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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This activity (on pages 15-23) combines interactive role-playing and graphing to introduce learners to the health affects of pollen.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this online activity, learners will explore size estimation in one, two and three dimensions. Multiple levels of difficulty allow for progressive skill improvement.

free Ages 6 - adult 10 to 30 minutes
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Jugando a este juego de estrategia, los chicos desarrollan su entendimiento de área y perímetro. En su turno, cada jugador hace una línea entre dos punto contiguos en la cuadrícula.

free Ages 8 - 14 10 to 30 minutes
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In this activity, learners explore how the application of nano-sized "whiskers" can protect clothing from stains.

Over $20 per group Ages 4 - adult 5 to 10 minutes
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In this online activity, learners crack the special code imprinted on envelopes to help the U.S. Postal Service deliver the mail.

free Ages 8 - 14 5 to 10 minutes
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In this activity, learners play a card game that explores different size scales--macro, micro and nano.

1 cent - $1 per group Ages 4 - adult 5 to 10 minutes
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In this introductory activity and demonstration, learners are introduced to the concept that different substances react chemically in characteristic ways.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this lesson, learners cut paper into very small pieces to explore the small size of quarks, the smallest thing we know of on Earth.

1 cent - $1 per student Ages 6 - 11 45 to 60 minutes
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Using information from the My Place in Space lithograph, learners write and/or draw a postcard to friends and family as if they had gone beyond the interstellar boundary of our Solar System, into the

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners explore how polarizing sunglasses can help diminish road glare.

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners slide shapes to create unusual tiled patterns.

1 cent - $1 per student Ages 8 - 11 30 to 45 minutes
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In this demonstration, cook a cake using the heat produced when the cake batter conducts an electric current.

$10 - $20 per group Ages 8 - 18 30 to 45 minutes
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This activity (on pages 24-29) combines science and art to introduce learners to how different animal pollinators spread pollen from one plant to another, and how certain shapes, colors, and smells of

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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This activity lets learners participate in the process of reconstructing a phylogenetic tree and introduces them to several core bioinformatics concepts, particularly in relation to evolution.

1 cent - $1 per group Ages 8 - 18 30 to 45 minutes
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In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes