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Showing results 201 to 220 of 263

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In this activity (on pages 20-23 of PDF), learners build a model of a power plant using simple materials.

$1 - $5 per student Ages 11 - 18 45 to 60 minutes
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In this activity, learners build water-propelled engines from soft drink cans.

$1 - $5 per group Ages 4 - 14 30 to 45 minutes
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This activity aims to stimulate discussion on the question of whether computers can exhibit “intelligence,” or are ever likely to do so in the future.

free Ages 11 - 18 10 to 30 minutes
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In this activity, learners imagine what the world might look like if we could build an elevator to space!

1 cent - $1 per student Ages 4 - adult 10 to 30 minutes
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In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light.

$5 - $10 per student Ages 6 - 14 10 to 30 minutes
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Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.

$1 - $5 per group Ages 6 - adult 1 to 2 hours
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In this thought-provoking activity, learners plan a hypothetical project to build and operate wind turbines in their community.

free Ages 8 - 14 2 to 4 hours
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In this meteorology activity, learners build weather vanes using straws, paperclips, and cardstock.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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In this game (on pages 14-21), learners explore how each human being inherits genetic traits such as eye color.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

Over $20 per group Ages 4 - 14 10 to 30 minutes
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In this activity, learners use UV light to transfer a pattern onto a plastic board. The pattern is transferred by placing a mask (a transparency sheet with the pattern) on a plastic board.

Over $20 per group Ages 14 - adult 1 to 2 hours
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In this activity about global climate change, learners will conduct an experiment and collect data to compare the amount of carbon dioxide (CO2) in four different sources of gases.

$5 - $10 per student Ages 11 - 18 45 to 60 minutes
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Learners observe and discuss a vacuum cleaner as a model of a baghouse, a device used in cleaning industrial air pollution.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this environmental science activity (page 4 of the PDF), learners use vinegar and chalk to observe the effect of acid rain on various building materials and plant life.

$1 - $5 per group Ages 6 - 14 4 to 24 hours
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Learners participate in a variety of activities modeling different disabilities.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners investigate the impact of oil pollution on the environment and wildlife. Learners use hard-boiled eggs and feathers to understand the damage that oil spills can cause.

$5 - $10 per group Ages 8 - 11 1 to 7 days
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This activity about cryptographic techniques illustrates how to accomplish a simple, but nevertheless seemingly impossible task—making a fair, random choice by flipping a coin between two people who d

$1 - $5 per group Ages 8 - 18 30 to 45 minutes
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Learners explore soybeans, soak them in water to remove their coat, and then split them open to look inside. They also make a musical shaker out of paper cups, a cardboard tube, and soybeans.

1 cent - $1 per student Ages 4 - 11 45 to 60 minutes
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In this outdoor activity, learners plan a simple foot path and create an environmental impact study of the natural area where the path would be.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this activity on page 10 of the PDF, learners develop an experiment to answer the following question: "How much water can the hydrogel in a baby diaper hold?" Use this activity to explore polymers,

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