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Showing results 121 to 140 of 183

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In this activity (11th activity on the page), learners use pennies to test their hearing acuity.

free Ages 6 - 18 10 to 30 minutes
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A group of learners has an envelope containing a series of bank checks. A few checks are removed at a time, and the team attempts to construct a plausible scenario which involves those checks.

free Ages 11 - 18 30 to 45 minutes
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In this demonstration (18th on the page), learners conduct a simple test to explore how the cornea refracts light, which is further bent by the eye lens through a process known as accommodation.

free Ages 8 - 18 Under 5 minutes
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In this quick activity/demonstration (5th on the page), learners explore depth perception.

free Ages 6 - 18 Under 5 minutes
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In this online activity, learners discover how random variation influences biological evolution.

free Ages 14 - adult 5 to 10 minutes
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In this activity, learners will investigate the impacts of harmful phytoplankton using NOAA's Coastal Services Center Harmful Algal Bloom Forecasting (HABF) Project data.

free Ages 14 - 18 1 to 2 hours
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In this astronomy activity (page 6 of the PDF), learners will compare and contrast two planets in the solar system using data obtained from the internet.

free Ages 11 - 18 45 to 60 minutes
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In this online activity about heart disease, learners will pick one of three patients (based on actual patient histories) and help a cardiologist diagnose and prescribe treatments for him or her.

free Ages 14 - 18 Under 5 minutes
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In this activity, learners will investigate the part of soil. Explore how clay, silt, and sand make up the dirt in your background. Activity includes step-by-step instructions and extension ideas.

free Ages 4 - adult 10 to 30 minutes
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In this activity (3rd on the page), learners investigate circadian rhythms by examining how well people do with estimating time.

free Ages 8 - 18 30 to 45 minutes
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In this weather forecasting activity, learners determine the location of cold and warm fronts on weather plot maps.

free Ages 8 - 18 45 to 60 minutes
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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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In this online activity about anatomy, learners will correctly order the path blood takes through the heart in order to absorb oxygen to deliver to the rest of the body.

free Ages 11 - 18 Under 5 minutes
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In this online activity, learners will brush up on their multiplication, division, and factoring skills with this exciting game.

free Ages 8 - adult 10 to 30 minutes
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This online interactive has three activities in the NanoLab (press the upper right button): Build, Zoom, and Transform.

free Ages 4 - adult 10 to 30 minutes
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In this activity, learners cut out and fold their own collapsible origami starshade, an invention that shields a telescope's camera lens from the light of a distant star so that NASA scientists can ex

free Ages 8 - 18 30 to 45 minutes
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Learners draw and describe a leaf, and then re-find leaves drawn and described by other learners. Learners can observe leaves outside, or leaves may be brought into the classroom.

free Ages 11 - 18 45 to 60 minutes
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In this investigation, learners gather information on various food items during a field trip to a local grocery store.

free Ages 11 - 18 45 to 60 minutes
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In this data analysis and environmental science activity, learners evaluate the feasibility of wave energy as a practical alternative energy source using ocean observing system (OOS) buoys.

free Ages 14 - adult 1 to 2 hours
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This "concept demonstration" provides learners with a concrete example (a pair of shoes in a classroom "cell") of what homology means.

free Ages 14 - 18 5 to 10 minutes