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  • Developing an Explanation for Tuskless Elephants

    Developing an Explanation for Tuskless Elephants


    In this activity, students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations.

  • Discovering the Wallace Line

    Discovering the Wallace Line


    This activity supports the HHMI short film The Origin of Species: The Making of a Theory. Students are presented with a map of the Malay Archipelago and some field notebooks with observations of animals. By plotting which animals are found on which island, the students discover the Wallace Line—a sharp boundary that separates distinct Asian and Australian fauna.