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    Twin Cities Public Television
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    This activity (page 2 of the PDF) is a full inquiry investigation into decomposition. Groups of learners will carefully observe and record the appearance of items, such as an apple, that can...

    $10 - $20 per group Ages 8 - 14 1 to 4 weeks
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    American Museum of Natural History
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    In this game, learners each represent a different organism in an environment. They build a web during the activity, and discover how all the players in an ecosystem depend on each other. As they...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    Oregon Institute of Marine Biology
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    In this activity, learners discover which plants and animals have symbiotic relationships and how this impacts each organism. Learners explore the advantages and disadvantages of different types of...

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