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In this activity, learners create and understand surface currents. Learners create example surface currents and discover how landmasses affect the current.

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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In this activity about electricity and magnetism, learners examine what happens when a magnet exerts a force on a current-carrying wire.

$1 - $5 per student Ages 8 - 14 5 to 10 minutes
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Learners construct a bird feeder from re-used materials. After hanging their feeder, they keep a journal about what birds visit the feeder.

$1 - $5 per student Ages 6 - 11 1 to 4 weeks
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This activity was designed for blind learners, but all types of learners can use it to investigate how, in a one-celled organism such as a bacterium, the division of cells increases the number of cell

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners build a LEGO® structure while wearing mittens. This activity shows learners how difficult it is to build small things when your tools are too big.

$1 - $5 per student Ages 4 - adult 5 to 10 minutes
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In this activity, learners build a musical drum using a cardboard tube, plastic wrap, and beads.

$1 - $5 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners build cars using syringes and water-powered hydraulics. Learners construct the car frame out of cardboard and set up a hydraulic system to raise and lower the car.

$1 - $5 per student Ages 6 - 14 1 to 2 hours
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Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle.

$1 - $5 per group Ages 4 - 14 1 to 4 weeks
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In this activity, learners investigate density as they discover how liquids separate to form density layers. Learners discover what happens when they add syrup, cooking oil, and water to a jar.

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.

$1 - $5 per group Ages 4 - 14 45 to 60 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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This activity (on pages 13-18) has learners build a model tree and then figure out how to make their tree stand up by itself.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners make optical fibers out of strips of gelatin.

$1 - $5 per group Ages 8 - 14 2 to 4 hours
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In this simple activity (on page 2 of the PDF), learners make a crystal garden using salt, water, and a brick.

$1 - $5 per student Ages 6 - 14 1 to 7 days
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In this activity, learners compare frog eggs to chicken eggs to better understand why frog eggs need water. Learners compare a boiled chicken egg to "frog eggs" represented by boiled tapioca.

$1 - $5 per student Ages 4 - 14 4 to 24 hours
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Use multiplication to help the aliens find out how much fuel they need to get their spacecrafts home.

$1 - $5 per group Ages 8 - 11 5 to 10 minutes
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In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this forensics activity, students will explore the methods that investigators use to confirm the authenticity of handwriting.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners will explore ways static electricity interacts with the surroundings of an object. The activity has step-by-step instructions in English and Navajo.

$1 - $5 per student Ages 4 - adult Under 5 minutes
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Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes