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Showing results 1621 to 1640 of 1648

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This simple hands-on activity demonstrates why the sky appears blue on a sunny day and red during sunrise and sunset.

$1 - $5 per student Ages 8 - 14 5 to 10 minutes
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In this design challenge activity, learners build a machine that kicks a Ping-Pong ball into a cup lying on its side 12 inches away.

$5 - $10 per student Ages 8 - 14 30 to 45 minutes
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In this quick and simple activity about reflexes (third activity on the page), learners conduct a simple test to explore the knee jerk reflex, typically conducted at the doctor's office.

free Ages 11 - 18 Under 5 minutes
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This fun and simple hands-on astronomy activity lets learners imagine what would happen if our Sun were replaced with a black hole.

$10 - $20 per group Ages 6 - adult 10 to 30 minutes
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In this quick activity about pollutants and groundwater (page 2 of PDF under Water Clean-up Activity), learners build a model well with a toilet paper tube.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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This activity (located on page 4 of the PDF under GPS: Baby Dinosaurs Activity) is a full inquiry investigation to determine the age of fossils based on where they are discovered.

$5 - $10 per group Ages 8 - 14 1 to 2 hours
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What is the optimal environment for hatching brine shrimp? Using a scaffold, learners design and conduct experiments testing the effect of a single abiotic factor on brine shrimp cyst hatch rate.

Over $20 per group Ages 11 - 18 1 to 7 days
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In this activity (2nd activity on the page), learners explore the sensitivity of their sense of touch.

$1 - $5 per group Ages 4 - 18 5 to 10 minutes
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In this genetics activity, learners create imaginary creatures known as "Reebops" to explore the relationships between genes and inherited traits.

Over $20 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners construct bug models that "jitter" all over the table with just a battery, motor, and counterweight.

$5 - $10 per student Ages 8 - 14 30 to 45 minutes
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In this quick and simple activity about reflexes (at the top of the webpage), learners conduct a simple test to explore pupillary response.

free Ages 8 - 18 Under 5 minutes
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In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.

1 cent - $1 per student Ages 8 - 18 45 to 60 minutes
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In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.

$5 - $10 per group Ages 6 - 14 2 to 4 hours
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In this activity (7th activity on the page), learners use their sense of touch to identify mystery objects hidden in socks.

free Ages 4 - 18 5 to 10 minutes
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A group of learners simulates the spread of disease by trading slips of paper, one set of which has been treated with a baking soda solution.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity (5th activity on the page), learners explore how what you see influences taste. In experiment 1, learners taste five sodas, one of which is clear soda with orange food coloring.

$5 - $10 per group Ages 8 - 18 10 to 30 minutes
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In this activity, learners explore electricity and conductivity to find that many things conduct electricity including copper, pencil lead, fruit, play-doh, and even people!

$1 - $5 per student Ages 8 - 18 30 to 45 minutes
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In this activity, learners combine two substances (plaster of Paris and water) to make a cast of an object's imprint in clay.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this chemistry activity (page 5 of the PDF), learners make an acid-base indicator using cabbage. Learners then explore how various subtances react with this indicator.

Over $20 per group Ages 8 - 18 30 to 45 minutes
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In this activity, learners build a mini dancing robot. This engineering activity introduces learners to electricity, circuits, switches, conductivity, and motors.

$5 - $10 per student Ages 6 - 14 45 to 60 minutes