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Showing results 81 to 100 of 146

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In this activity, learners will compare predicted and observed tides using data from The National Oceanic and Atmospheric Administration(NOAA).

free Ages 14 - 18 45 to 60 minutes
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In this activity, learners use tsunami time travel maps to predict how long it will take a tsunami to reach the shore.

free Ages 14 - adult 1 to 2 hours
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In this hands-on activity, learners make the world's simplest Cartesian diver, using only a plastic bottle, some water, and a condiment packet.

free Ages 6 - adult 5 to 10 minutes
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This activity (8th activity on the page) tests learners' ability to identify things using only the sense of hearing.

free Ages 8 - 18 5 to 10 minutes
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This activity is designed to let learners measure their reaction time or response time to something they see.

free Ages 8 - 18 10 to 30 minutes
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This activity is about how you form mental images of your body's position in space, independent of vision. Can you take a sip of water from a cup with your eyes closed?

free Ages 11 - 18 10 to 30 minutes
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In this guided discussion activity, learners watch a video about Central Africa's Lower Congo River, one of the most biologically diverse rivers in the world.

free Ages 11 - adult 10 to 30 minutes
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Are fingers the only place on the body where we use our sense of touch? In this activity (6th activity on the page), learners test the touch sensitivity of different parts of the body.

free Ages 4 - 18 5 to 10 minutes
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In this easy demonstration (3rd on the page), learners explore depth perception by conducting a test with two pencils.

free Ages 4 - 18 Under 5 minutes
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This is a quick and simple demonstration about reflexes (fourth activity on the page). One learner stands behind a see-through barrier like a window or wire screen.

free Ages 8 - 18 Under 5 minutes
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Learners explore the endless possibilities of cardboard engineering in this open-ended STEAM activity. Practice being creative by building structures with no glue, only cardboard and scissors.

free Ages 4 - adult 10 to 30 minutes
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In this activity, learners create models of ionic compounds and observe the chemical formula of binary molecules they have created.

free Ages 14 - adult 1 to 2 hours
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In this activity, learners will explore engineering concepts to construct a blanket fort using materials sourced from home.

free Ages 4 - adult 10 to 30 minutes
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This activity offers learners and their families several ways to raise their awareness together about home water.

free Ages 4 - adult 1 to 7 days
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In this activity, learners use found natural materials to create a water haven for bees and other insects.

free Ages 4 - adult 10 to 30 minutes
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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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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 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