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Through discussion and hands-on experimentation, learners examine the geological (ancient) carbon cycle.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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In this three-part activity, learners explore how waves are formed and why some waves are bigger than others. First, learners observe waves of water in a pan generated by an electric fan.

$10 - $20 per group Ages 8 - 11 45 to 60 minutes
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This lesson focuses on how nanotechnology has impacted the design and engineering of many everyday items from paint to fabrics.

Over $20 per group Ages 8 - 18 1 to 2 hours
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Using a real-size sketch of a baby elephant's footprint, learners estimate, measure and record the width (diameter) and outside edge length (perimeter or circumference) of the footprint.

1 cent - $1 per group Ages 4 - 11 30 to 45 minutes
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Learners develop awareness and understanding of the daily air quality using the Air Quality Index (AQI) listed in the newspaper or online.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners will plot the distribution of various oozes using information from sediment maps.

free Ages 14 - 18 45 to 60 minutes
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In this coin math activity, learners sort and stack 100 (one hundred) pennies into piles of 5 pennies each, 10 pennies each, and 20 pennies each.

1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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In this chemistry activity, learners explore whether matter is created or destroyed during a chemical reaction. They will compare the weight of various solutions before and after they are mixed.

$5 - $10 per group Ages 11 - 18 30 to 45 minutes
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In this activity (on page 142 of the PDF), learners will compare breathing rates before and after hyperventilation to explore how reduced carbon dioxide levels in the blood lower the need to breathe.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners participate in a simulated dig to discover fossilized dinosaur bones. Learners take notes, make a map and propose theories about dinosaurs.

Over $20 per group Ages 8 - 11 1 to 2 hours
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In this activity, learners use an astrolabe to measure the altitude of objects. Learners will first practice taking measurements by measuring the altitude of trees and buildings.

$1 - $5 per student Ages 6 - 14 1 to 4 weeks
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Learners design their own experiment to determine conditions that either help or hinder the decomposition of carrots by soil microbes.

$10 - $20 per group Ages 11 - 14 1 to 4 weeks
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Learners investigate how drag affects the falling rate of objects.

1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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Learners design their own experiment to determine which M&M color dissolves the fastest in water.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners use things from the kitchen as building materials to explore how shapes contribute to the strength of different structures.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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Water, whether fresh or salty, serves as one of the best electrical conductors on the planet. Does salt effect its conductivity?

free Ages 14 - 18 1 to 2 hours
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This is a hands-on activity exploring how nanoscale particles are used in mineral sunblocks to increase their transparency.

$10 - $20 per group Ages 6 - adult 10 to 30 minutes
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This is an activity about discovering the colors and beauty of nature. Learners will spend time outdoors, matching paint chip samples, colored paper, or colors of clothing to those found in nature.

$1 - $5 per group Ages 4 - 14 30 to 45 minutes
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In this activity, learners examine raindrop bottles (prepared ahead of time) to observe in slow motion the behavior of falling droplets and explore concepts such as drag and terminal velocity.

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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In this activity, learners use rice grains to model the composition of the atmosphere of the Earth today and in 1880. Learners assemble the model while measuring percentages.

$1 - $5 per group Ages 11 - 18 1 to 2 hours