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In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners will investigate how shorebirds and seabirds are extremely vulnerable to changes in their environment, whether human-induced or otherwise.

free Ages 14 - 18 1 to 2 hours
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In this chemistry activity, learners observe a combustion reaction and deduce the components necessary for the reaction to occur.

1 cent - $1 per group Ages 11 - 18 5 to 10 minutes
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In this activity (page 59 of the PDF), learners spin and observe false eyelashes in jars of water (prepared at least 1 day ahead of time) to investigate the effects of different types of motion on the

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this chemistry activity, learners perform three chemical reactions in a sealed zip-top bag. Learners will record their observations and classify the changes as chemical or physical.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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In this activity (9th activity on the page), learners work in pairs to see how their perception of touch differs from reality.

free Ages 8 - 18 10 to 30 minutes
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In this activity, learners investigate the touch sensory system and discover how to plan and carry out their own experiments.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners investigate the sense of sight and develop and conduct their own experiments.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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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 will examine a variety of seeds, describe them, and determine how they are dispersed.

$1 - $5 per group Ages 14 - 18 2 to 4 hours
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In this data analysis activity, learners use data collected by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) to study Chilean sea bass populations.

$1 - $5 per student Ages 14 - 18 1 to 2 hours
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In this activity, learners explore sensors and focus specifically on how to measure humidity using a sensor.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners make an equatorial sundial, which is simple to construct and teaches fundamental astronomical concepts. Learners use the provided template and a straw to build the sundial.

1 cent - $1 per group Ages 11 - 18 2 to 4 hours
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In this activity, learners explore how anemometers work to record wind speeds and how the equipment has undergone engineering adaptations over time.

Over $20 per group Ages 8 - 18 1 to 2 hours
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In this laboratory activity, learners design an experiment to evaluate how environmental factors influence the growth of molds.

$5 - $10 per group Ages 11 - 18 1 to 7 days
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In this hands-on and feet-on excursion, learners take a science walk to visualize the planet's immense size and numerous structures, without the usual scale and ratio dimensions found in most textbook

1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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Learners attach an egg to a rubber-band bungee cord and drop the egg.

1 cent - $1 per student Ages 8 - 18 30 to 45 minutes
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In this activity, learners discover the principles of edible glass by making a supersaturated sugar solution.

$5 - $10 per group Ages 8 - adult 2 to 4 hours
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In this activity, learners build a plastic emergence chamber (or use purchased "mini mosquito breeder") to observe and analyze the mosquito life cycle.

Over $20 per group Ages 11 - 18 1 to 4 weeks
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In this activity (1st activity on the page), learners explore their sense of taste and the structure of the tongue by taste-testing various foods.

$1 - $5 per group Ages 8 - 18 10 to 30 minutes