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    BioEd
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    In this activity, learners observe what happens when yeast cells are provided with a source of food (sugar). Red cabbage "juice" will serve as an indicator for the presence of carbon...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    Omaha's Henry Doorly Zoo
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    In this activity, learners explore the concept of permeability to better understand why amphibians are extremely sensitive to pollution. Learners soak one regular hard-boiled egg and one peeled...

    1 cent - $1 per group Ages 4 - 14 4 to 24 hours
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    NISE Network
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    In this activity, learners make self-assembled polymer spheres. Learners discover that self-assembly is a process by which molecules and cells form themselves into functional structures, and that...

    $10 - $20 per group Ages 4 - adult 10 to 30 minutes
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    American Chemical Society
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    Learners see that a carrot slice sinks in fresh water and floats in saltwater. Considering the placement of the carrot slice in water and saltwater, learners infer that the density of salt water...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes