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In this activity, learners complete a series of drawing activities to explore scale and powers of 10. Learners first trace each other on 1-meter-square pieces of paper.

1 cent - $1 per student Ages 14 - 18 30 to 45 minutes
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In this activity, learners investigate the formation of craters. Learners will examine how the size, angle and speed of a meteorite's impact affects the properties of craters.

$1 - $5 per student Ages 6 - 14 45 to 60 minutes
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In this archaeology activity, learners consider ways in which excavating an underwater site is different from excavating a terrestrial site.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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This fun hands-on astronomy activity lets learners use star maps (included) to find constellations and to identify stars with extrasolar planets (Northern Hemisphere only, naked eye).

$1 - $5 per group Ages 8 - adult 45 to 60 minutes
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Learners test two jars, one containing plain air and one containing carbon dioxide gas, to see their reactions to temperature changes.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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In this biology activity (page 8 of the PDF), learners will determine whether they are "tasters" or "non-tasters", test selected individuals from their families and peer group for the trait, and chart

$1 - $5 per student Ages 14 - 18 1 to 7 days
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In this activity, learners make "totally tubular" forms of carbon. Learners use chicken wire to build macro models of carbon nanotubes.

$10 - $20 per group Ages 11 - 18 10 to 30 minutes
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In this activity, learners recrystallize substances from solutions and make observations about the resulting crystals. This test can help further identify the unknown.

$1 - $5 per group Ages 8 - 14 4 to 24 hours
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In this activity about electricity, learners explore how static electricity can make electric "fleas" jump up and down. Learners use a piece of wool cloth or fur to charge a sheet of acrylic plastic.

$1 - $5 per group Ages 6 - 11 10 to 30 minutes
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In this geology activity, learners create a model using a mixture of salt and sand inside a CD case. When the case is tilted or inverted, the mixture dramatically sorts into a layered pattern.

$5 - $10 per group Ages 11 - 18 1 to 2 hours
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In this activity (2nd on the page), learners conduct a series of tests to find out which foot is more dominant. In other words, are they right-footed or left-footed?

free Ages 8 - 14 10 to 30 minutes
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Learners observe and conduct experiments demonstrating the different properties of hot and cold materials.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this multi-part activity learners examine non-point water pollution.

free Ages 6 - adult
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In this activity related to plant biotechnology, learners extract DNA from fruit to investigate how it looks and feels.

$10 - $20 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners predict where a ball will go after it bounces off another object. Learners discover that the motion of objects is predictable based on laws of motion.

1 cent - $1 per group Ages 6 - 11 45 to 60 minutes
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In this environmental science activity (page 3 of the PDF), leaners will identify and explain the causes of erosion.

Over $20 per group Ages 8 - 11 1 to 7 days
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In this activity, learners rotate through several learning and play stations to explore dinosaurs and paleontologists.

$5 - $10 per group Ages 4 - 6 45 to 60 minutes
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Learners set up books with rubber bands stretched between the books. When two identical books are stretched apart and released, they move back toward each other an equal distance.

1 cent - $1 per group Ages 11 - 14 30 to 45 minutes
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In this activity (on page 2 of the PDF under GPS: Sailboat Design Activity), learners will discover how the shape of an object, not just its weight, determines whether it floats or sinks.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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The learner will ask yes-no questions to identify a secret shape (similar to Twenty Questions). Build understanding of shapes and logic skills with this game for all ages.

free Ages 4 - 8 5 to 10 minutes