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Latent Prints
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In this activity, learners examine fingerprints. Learners leave a hidden print on a surface and then make their own print detecting powder from graphite (found in pencils).
Divers
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Learners experiment with a 2-liter plastic bottle containing water and four “divers." The divers consist of open, transparent containers with the opening points downward.
Odors Aloft
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Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.
The Unpoppable Balloon
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In this activity, learners explore polymer structure and their ability to reform around objects by attempting to stab a wooden skewer through a balloon without popping it.
Lava Lamps
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Learners observe working lava lamps to understand how they work (included in PDF link).
How Loud is Too Loud
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In this activity (described on pages 39-42 of PDF), learners make a paper wheel (on pages 57-60 of PDF) that shows them the relative loudness of different sounds.
Bend It, Break It
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In this activity (on pages 25-32 of PDF), learners make models of the inner ear out of pipe cleaners.
DNA Extraction
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Learners use a simple process to extract DNA from strawberries.
Shake It Up!
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Learners observe a sealed container holding a clear colorless liquid. They shake the container and the fluid turns blue. When allowed to sit for a few moments, the fluid turns colorless again.
Bend a Carrot
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In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control.
Yeast Balloons: Can biochemistry blow up a balloon?
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Using yeast, sugar, and water, learners create a chemical reaction which produces carbon dioxide (CO2) gas inside a 2-liter bottle. They use this gas to inflate a balloon.
In the Toilet
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This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.
Hanford at the Half-Life Radiation Calculator
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This quiz lets you estimate your annual radiation exposure.
Cabbage Juice Indicator: Test the pH of household products
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Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house.
Shrinkers: Cook up some plastic!
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In this activity (on page 2 of the PDF), learners (with adult help and supervision) investigate how heat affects polystyrene plastic.
Choose Your Ooze
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During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.
Inner Space
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In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the marbles.
Invisible Ink
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In this hands-on activity (on page 2 of the PDF), learners experiment with lemon juice and paper to create a message that can only be revealed using chemistry.
Big Things Come in Little Packages
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As a group, learners investigate three packages which are all the same size and shape, but have different contents. One is filled with foam, one is filled with wood, and one is filled with metal.
Mystery Writing: Write and develop a secret message
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Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution.