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  • Nails in a Jar

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter during a chemical change (oxidation). The probe is designed to find out if students think the mass changes as rust forms…

  • Burning Paper

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter during combustion. The probe is designed to find out if students think the mass changes as paper burns inside a closed…

  • Hot and Cold Balloons

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter. The probe is designed to reveal whether students recognize that the mass of a warm gas in a closed system is the same after…

  • No Bones About It

    Journal Article |

  • 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…

  • Ecosystem Cycles

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the transfer of matter and energy in ecosystems. The probe is designed to reveal whether students recognize that only matter is cycled through an…

  • Sam’s Puppy

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about growth. The probe can be used to determine whether students recognize that growth occurs as a result of cell division, which increases the number…

  • Respiration

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about respiration. The probe is designed to find out whether students recognize respiration as a process that all living things use in order to obtain…

  • Rainfall

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about precipitation. The probe is designed to determine whether students understand what causes the water in clouds to fall as rain.

  • Darkness at Night

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the day/night cycle. The probe is designed to determine whether students recognize that Earth’s rotation explains why it is dark at night and light…

  • Is It a Solid?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about solids. The probe is designed to reveal the macroscopic and/or microscopic properties students use to decide whether a material is a solid.

  • Cells and Size

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the size of cells. The probe can be used to determine whether students recognize how small a cell is relative to other things.

  • Is It a Plant?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the concept of a plant. The probe is designed to find out how students determine whether a living thing is considered to be a plant.

  • Earth’s Mass

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the cycling of matter. The probe can be used to determine whether students recognize that once-living matter breaks down and cycles through…

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