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    Sciencenter
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    Learners are challenged to discover the relative densities of colored liquids to create a rainbow pattern in a test tube. Five different solutions—3 mixtures of ethyl alcohol, food color and water;...

    $5 - $10 per group Ages 4 - 14 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    Learners use a universal indicator to test the amount of sodium hydroxide needed to change the pH of plain water compared with the amount needed to change the pH of gelatin. Learners discover that...

    $1 - $5 per group Ages 14 - adult Under 5 minutes
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    Oregon Museum of Science and Industry
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    Learners write their initials by applying different clear "magic ink" solutions to separate pieces of paper and then "develop" the inks with other clear solutions. One "...

    $1 - $5 per group Ages 14 - adult Under 5 minutes
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    Oregon Museum of Science and Industry
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    Learners pour equal amounts of coffee, mineral oil, corn syrup, and alcohol into a beaker. The liquids resolve into stacked layers, and learners can infer which liquids are the most and least dense...

    $1 - $5 per group Ages 11 - 18 10 to 30 minutes
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    University of Southern Mississippi
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    In this activity, learners prepare four polymer elastomers and then compare their physical properties, such as texture, color, volume, density, and bounce height. This activity is a fun way for...

    $5 - $10 per group Ages 11 - 18 45 to 60 minutes
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    The Science House
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    In this chemistry activity, learners explore density by using four solids and 6 liquids to create colorful, layered rows. This activity can be done as a demonstration or lab, with learners trying...

    $1 - $5 per group Ages 6 - 18 5 to 10 minutes
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    University of Southern Mississippi
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    In this activity, learners prepare four polymer elastomers and then compare their physical properties, such as texture, color, volume, density, and bounce height. This activity is a fun way for...

    $5 - $10 per group Ages 14 - adult 1 to 2 hours
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    University of Illinois Urbana-Champaign
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    In this activity, learners test and compare the physical properties of thermoplastic polymers. Learners compare different plastics based on their color, degree of transparency, texture, and density...

    $1 - $5 per group Ages 14 - adult 30 to 45 minutes
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    National Health Museum
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    In this lab exercise, learners explore diffusion, cell membranes and particle size using beets and three alcohols. Generally, learners predict that smaller alcohols will permeate more quickly, and...

    $10 - $20 per group Ages 14 - 18 10 to 30 minutes
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    Omaha's Henry Doorly Zoo
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    In this field study, learners discover how to collect data in the field and how their efforts can help certain animals, specifically, amphibians. The field study allows learners to go into the...

    Over $20 per group Ages 8 - adult 2 to 4 hours

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