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Showing results 621 to 640 of 1908

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In this activity, learners perform a simulated blood test procedure.

$1 - $5 per group Ages 11 - adult 5 to 10 minutes
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Visitors observe a tray holding a crystal-covered brick. The crystals were created by evaporation of a solution containing liquid bluing, ammonia, and salt.

$1 - $5 per group Ages 6 - 14 5 to 10 minutes
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Did you know that the water we use today is the same water found on Earth millions of years ago? The Earth constantly uses and recycles water in a process called the water cycle.

$5 - $10 per group Ages 8 - 14 1 to 7 days
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Learners use a spring scale to drag an object such as a ceramic coffee cup along a table top or the floor.

$5 - $10 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH.

$5 - $10 per student Ages 8 - 18 10 to 30 minutes
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This laboratory exercise is designed to show learners how DNA can easily be extracted from onion cells using simple materials.

$5 - $10 per group Ages 11 - 18 45 to 60 minutes
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In this activity about electricity, learners produce a spark that they can feel, see, and hear. Learners rub a Styrofoam plate with wool to give it an electric charge.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners control the (apparent) size of a hole with their brain.

1 cent - $1 per student Ages 11 - 18 5 to 10 minutes
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In this activity, learners consider how oil spills behave in the ocean and what impact they have on marine wildlife.

$10 - $20 per group Ages 11 - 14
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In this activity, learners explore the process of condensation.

1 cent - $1 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners explore how the application of nano-sized "whiskers" can protect clothing from stains.

Over $20 per group Ages 4 - adult 5 to 10 minutes
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In this activity, learners use transparent tape and polarizing material to create and project beautifully colored patterns reminiscent of abstract or geometric stained glass windows--no glass required

$10 - $20 per student Ages 6 - 14 10 to 30 minutes
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In this activity, learners use a compact disc to make a spectrometer, an instrument used to measure properties of light.

$1 - $5 per student Ages 11 - 18 30 to 45 minutes
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This is part 3 of the three-part "Crayon Rock Cycle" activity. Before starting this section, learners must have completed part 1: sedimentary rock and part 2: metamorphic rocks.

$5 - $10 per student Ages 4 - adult 10 to 30 minutes
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In this activity, learners create their own experiment and test which of 4 mixtures of household chemicals turn pennies green over 5 days.

$5 - $10 per group Ages 8 - 14 1 to 7 days
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In this activity, learners write a secret message in "invisible ink" and then use chemistry to view the writing.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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In this activity on page 8 of the PDF, learners make a slimy substance very similar to mucus, and sprinkle it with glitter to imitate the way that allergens are trapped.

$5 - $10 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners conduct an experiment to find the volume of one mole of gas. Learners capture sublimated gas from dry ice in a ziploc bag and use water displacement to measure its volume.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity on page 7 of the PDF (Get Cooking With Chemistry), learners conduct an experiment to get an idea of how cheese is made.

$5 - $10 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners create a "mini sky" in a glass of water in a dark room.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes