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  • Core Idea ESS2: Earth’s Systems

    Book Chapter |

    The Earth exists as one large system, consisting of an array of interconnected subsystems. Often, scientists focus their efforts on exploring and explaining smaller, individual subsystems or even smaller relationships…

  • Mountaintop Fossil

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about mountain formation. The probe is designed to determine whether students recognize that some mountains are formed from the uplift of Earth’s crust…

  • Is It a Rock? (Version 2)

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about an Earth material, rocks. The probe is designed to determine whether students can distinguish between humanmade, “rocklike” materials and…

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