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    In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation. Learners compare the melting rate between chocolate left in the sunshine and chocolate...

    1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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    In this activity, learners examine and simulate wildlife entanglement by experiencing what it might be like to be a marine animal trapped in debris. Learners wrap rubber bands around their fingers...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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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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    In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater. This...

    1 cent - $1 per group Ages 6 - 14 5 to 10 minutes
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    In this activity, learners observe the hydrologic cycle in action as water evaporates and condenses to form rain right before their eyes. Learners perform a simple experiment to precipitate "...

    1 cent - $1 per group Ages 4 - 14 10 to 30 minutes
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    In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs. Use this activity to begin discussions on...

    1 cent - $1 per group Ages 8 - 18 30 to 45 minutes
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    In this activity, learners will measure the length of a shadow and use the distance from the equator to calculate the circumference of the earth. Note: This experiment can only be done at solar...

    1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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    In this activity, learners perform experiments to examine whether or not trash can float, blow around, or wash away. Then learners analyze the effects of these characteristics on marine debris in...

    1 cent - $1 per group Ages 6 - 14 30 to 45 minutes
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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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    In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials. Learners group together and link arms or hold hands to form chemical...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes

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