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Learners drop two different masses of play dough and observe how long it takes them to hit the ground.

$1 - $5 per student Ages 11 - 14 30 to 45 minutes
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In this activity, learners create a mixture of water, alcohol and permanent marker ink, and then add salt to form a colored alcohol layer on top of a colorless water layer.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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This is an activity about robotics programming. Learners will discover how precise programmers have to be as they instruct a friend to make a peanut butter and jelly sandwich.

$1 - $5 per group Ages 4 - adult 5 to 10 minutes
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This is an activity (located on page 3 of the PDF under Nanosilver Activity) about diffusion of small molecules across cell membranes.

$10 - $20 per group Ages 8 - 14 1 to 7 days
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In this optics activity, learners conduct an experiment to find out why two eyes are better than one!

free Ages 6 - 11 10 to 30 minutes
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This is a chemistry lab activity about solutions (page 6 of the PDF). Students make a limewater testing solution for carbon dioxide and explore the concepts of solubility and precipitates.

$10 - $20 per group Ages 6 - 14 4 to 24 hours
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In this activity, learners investigate the touch sensory system and discover how to plan and carry out their own experiments.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this genetics activity, learners discover how to extract DNA from green split peas.

$1 - $5 per student Ages 8 - 18 30 to 45 minutes
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This is a chemistry lab activity about solutions (page 7 of the PDF). Learners see firsthand how chemicals in a solution can combine to form an entirely different substance.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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In this activity, learners investigate the sense of sight and develop and conduct their own experiments.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this optics activity, learners conduct an experiment to explore peripheral vision. Learners collect data about their ability to see shapes, colors, or letters using their peripheral vision.

1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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In this activity about molecular diffusion (located on page 2 of the PDF under Nanosilver Activity), learners will make predictions and move molecules of iodine through a seemingly solid plastic sandw

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this "Sid the Science Kid" activity from Episode 108: My Ice Pops, learners observe reversible change while thinking about ways to make ice melt.

$1 - $5 per group Ages 4 - 6 2 to 4 hours
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Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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In this fun physics activity (page 9 of the pdf), learners take part in a paper airplane design challenge.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners conduct an experiment to help Pharaoh design a better insulated tomb.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners investigate the movement of water into and out of a polymer. Learners test the diffusion of water through gummy bears, which are made of sugar and gelatin (a polymer).

$1 - $5 per student Ages 11 - 18 1 to 7 days
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What causes frost to form on the outside of a cold container? In this activity, learners discover that liquid water can change states and freeze to become ice.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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In this activity (located on page 9 of the PDF), learners are introduced to Aesop's fable, "The Crow and the Pitcher." In the story, a clever crow drops pebbles into a pitcher to cause the water level

free Ages 6 - 11 45 to 60 minutes
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Learners use a commercially available toy to experiment with density. They fill a chamber in the toy submarine with baking powder and release it into a tank of water.

$1 - $5 per group Ages 4 - 14 5 to 10 minutes