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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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    WGBH
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    Professor John Endler traveled to Trinidad in the 1970s to study wild guppies. In this activity, learners take part in an online simulation of Endler's work. Learners collect data, formulate a...

    1 cent - $1 per group Ages 11 - adult 45 to 60 minutes
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    Science Museum of Minnesota
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    Using simple materials, learners build an underwater scope to observe what lives in rivers, lakes, and streams. Since people can't breathe under water, the world below the water remains a...

    1 cent - $1 per student Ages 6 - 14 45 to 60 minutes
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    New England Aquarium
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    In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats. This...

    1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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    New York Hall of Science
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    In this inquiry-based lesson, learners measure the biomass of trees, calculate the carbon stored by the trees, and use this information to create recommendations about using trees for carbon...

    1 cent - $1 per student Ages 11 - 14 1 to 2 hours
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    University of Illinois Extension
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    In this activity, learners investigate soil conditions by creating a soil map. Learners record soil characteristics and compare the conditions of soil in different grid sections. Use this activity...

    1 cent - $1 per student Ages 4 - 14 1 to 2 hours
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    NOAA
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    In this activity, learners are introduced to tree rings by examining a cross section of a tree, also known as a “tree cookie.” They discover how tree age can be determined by studying the rings and...

    1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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    Science Museum of Minnesota
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    Build a fruit fly trap out of a 2-liter plastic bottle and some rotten fruit! Fruit flies are easy to catch in warm weather. Once you catch some, you will be able to see their life cycle up-close....

    1 cent - $1 per student Ages 4 - 11 1 to 4 weeks
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    NOAA
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    In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere. Learners conduct the experiment by placing a large plastic bag over a living limb...

    1 cent - $1 per group Ages 6 - 14 2 to 4 hours
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    Lawrence Hall of Science
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    En esta tira cómica, Mateo y Cientina observan unas hormigas para contestar algunas preguntas: ¿Qué comen las hormigas? ¿Si estuviera bloqueado su camino al hormiguero, podrían encontrar su camino...

    1 cent - $1 per group Ages 8 - 11 10 to 30 minutes

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