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Showing results 921 to 940 of 1617

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In this activity, learners make a black box device that serves as an excellent analogy to Rutherford's famous experiment in which he deduced the existence of the atomic nucleus.

$1 - $5 per group Ages 14 - 18 30 to 45 minutes
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This exercise can be used to stimulate the investigative nature of learners as they use forensic plant pathology techniques to prove the learners' innocence in a mock murder investigation.

1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this activity that can be used as a lab or demonstration, learners use Lactaid® and lactose to demonstrate the concept of enzyme action.

Over $20 per group Ages 14 - 18 10 to 30 minutes
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In this technology activity, learners light up the room with electrifying play dough creations. Learners use conductive and insulating homemade play dough to build simple circuits.

Over $20 per group Ages 8 - 14 1 to 2 hours
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In this activity (page 10), learners explore how molecules self-assemble according to forces of attraction and repulsion.

Over $20 per group Ages 11 - 14 45 to 60 minutes
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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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In this activity, learners construct a model of DNA to better understand the structure of DNA and protein synthesis.

Over $20 per group Ages 8 - adult 1 to 2 hours
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In this technology activity, learners explore digital imaging and pixels. Learners "transmit" an image to a partner by creating an image on grid paper.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this classic memory game (on pages 37-45 of PDF), learners turn over tiles to reveal images on the back.

1 cent - $1 per group Ages 4 - 11 45 to 60 minutes
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In this 6-7 day investigation, learners begin with an introduction to seamounts that are present in the Gulf of Alaska.

$5 - $10 per group Ages 11 - 14 1 to 7 days
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In this activity, learners explore conservation of energy by experimenting with a solar cell light device.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this simulation, learners act out each digestive function of the organs, tissues, and cells in the digestive tract.

$5 - $10 per group Ages 11 - 18 30 to 45 minutes
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In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates.

$1 - $5 per group Ages 6 - 14 2 to 4 hours
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In this activity, learners use an origami template to design eight amino acids. Learners configure the amino acids to form a protein. Use this activity to introduce proteins and amino acids.

$1 - $5 per student Ages 8 - 14 45 to 60 minutes
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In this activity, learners explore the Great Plains.

$1 - $5 per group Ages 4 - 11 30 to 45 minutes
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This activity (page 2) draws upon a familiar, computer-based concept related to visual resolution: pixilation.

free Ages 11 - 14 5 to 10 minutes
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In this activity, learners use their senses to collect information about a fruit and record their findings in a Science Journal.

$10 - $20 per group Ages 4 - 8 45 to 60 minutes
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In this activity, learners use a model for how fishing affects marine life populations, and will construct explanations for one of the reasons why fish populations are declining.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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What does it mean to be alive? Is a cactus alive? Is a seed alive? Is the air we breathe alive? What are the necessary characteristics?

$1 - $5 per group Ages 11 - 14 1 to 2 hours