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    American Museum of Natural History
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    Learners work in teams to investigate how scientists use physical characteristics to classify living things. First, learners examine drawings of a variety of leaves from different species of oak...

    free Ages 8 - 18 45 to 60 minutes
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    Twin Cities Public Television
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    In this activity (on page 1 of the PDF), learners will use a magnifier to carefully examine samples of sand from different locations. They record their observations regarding the different grain...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    Perkins School for the Blind
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    This activity was designed for blind learners, but all types of learners can use it to organize an interactive model for learning the classification system (taxonomy) of living things. Learners...

    $1 - $5 per student Ages 8 - 14 10 to 30 minutes
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    University of Nebraska State Museum
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    In this activity (on pages 2-8), learners experience how scientists use classification in their study of animals. They sort pictures of parasites according to characteristics such as shape, size,...

    1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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    Twin Cities Public Television
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    This online Flash game gets learners thinking like geneticists in order to breed a border collie puppy with select traits, including coat color, coat length, and ear length. Progressive levels of...

    free Ages 6 - 14 5 to 10 minutes
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    WNET
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    In this online math game from Cyberchase, learners use tricky clues to solve pattern puzzles. The computer selects a secret pattern using up to four shapes. Learners have eight tries to guess the...

    free Ages 8 - 11 5 to 10 minutes
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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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    COSI
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    In this classification activity, learners will learn one way of organizing plants and animals. The learners will "classify" themselves by means of a dichotomous key, a tool used to...

    free Ages 8 - 11 10 to 30 minutes
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    Lawrence Hall of Science
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    In this outdoor, warm weather activity, learners use sweepnets to search a grassy area such as a large lawn or field, collecting small animals to find as many different kinds of animals as possible...

    $5 - $10 per group Ages 6 - 14 45 to 60 minutes
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    Miami Science Museum
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    In this activity, learners create their own bird species using arts and crafts materials. The bird call recordings are not online so the introduction activity can't be done, but everything...

    1 cent - $1 per group Ages 4 - 11 30 to 45 minutes

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