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    PBS
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    In this activity, learners collect, analyze, and interpret information about objects in order to classify them into a cladogram. Use this activity to talk about how scientists classify things.

    $5 - $10 per group Ages 8 - 18 1 to 2 hours
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    Twin Cities Public Television
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    In this activity (on page 2 of the PDF), learners will develop their own version of a tool used by biologists, a dichotomous key, by collecting all their left shoes. Learners brainstorm different...

    free Ages 8 - 14 10 to 30 minutes
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    American Association for the Advancement of Science
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    Learners practice their taxonomy skills by sorting a group of fasteners (e.g. rubber bands, buttons, paper clips, screws) into different categories. First they split the group into two groups based...

    1 cent - $1 per group Ages 8 - 11 30 to 45 minutes