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In this activity, learners will examine various world data maps to combine the information and predict which areas could be tropical rainforests.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this design challenge activity, learners investigate series circuits and motors to build a hand-held "kick stick." Their goal is create a battery-operated device that sends a Ping-Pong ball across

$5 - $10 per student Ages 8 - 14 45 to 60 minutes
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Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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Learners build a wind turbine and test it to see how much energy is created.

Over $20 per student Ages 11 - 18 45 to 60 minutes
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In this design challenge activity, learners invent a pinball-like game where a kick stick hits a ping pong ball into a target that buzzes.

$10 - $20 per student Ages 8 - 14 45 to 60 minutes
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In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target.

$1 - $5 per student Ages 8 - 18 45 to 60 minutes
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In this activity (located on page 9 of the PDF), learners are introduced to Aesop's fable, "The Crow and the Pitcher." In the story, a clever crow drops pebbles into a pitcher to cause the water level

free Ages 6 - 11 45 to 60 minutes
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In this health and genetics activity, learners determine whether tasting the bitter compound PTC (phenylthiocarbamide) influences which vegetables a person likes.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes
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Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.

1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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In this outdoor activity/field trip, learners locate and study plants and animals in several freshwater pond habitats.

$10 - $20 per group Ages 6 - 14 45 to 60 minutes
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In this outdoor activity, learners use a mapping technique to become oriented to the major features of an outdoor site.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.

free Ages 11 - 18 45 to 60 minutes
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Professor John Endler traveled to Trinidad in the 1970s to study wild guppies. In this activity, learners take part in an online simulation of Endler's work.

1 cent - $1 per group Ages 11 - adult 45 to 60 minutes
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Learners use beach profile data from a local beach or online data from Ocean City, Maryland to investigate coastal erosion and sediment transport.

per group Ages 11 - 18 45 to 60 minutes
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Learners use a variety of beans to represent a variety of species, and scatter these beans over a large piece of paper representing the environment.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this playful, goopy activity, learners mix two liquids to create a solid (that sometimes acts like a liquid ), using basic household materials such as borax and glue.

$1 - $5 per student Ages 6 - 11 45 to 60 minutes
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In this activity, learners make a scale model of the Solar System and learn the real definition of "space." Learners use the online calculator to create an appropriate scale to use as a basis for thei

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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This laboratory exercise is designed to show learners how DNA can easily be extracted from onion cells. It includes an optional test for the presence of DNA.

$5 - $10 per group Ages 11 - 18 45 to 60 minutes
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The purpose of this plant biotechnology activity is to demonstrate the effect of changes in the environment on the growth and fertility of landscape grasses and crop grasses such as wheat and rice.

$10 - $20 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners measure and calculate the amount of cubic feet various containers contain. Next, learners investigate cubic feet per second (cps), by carrying jugs in one second.

free Ages 11 - 18 45 to 60 minutes