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  • Model of Air Inside a Jar

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the particle model of matter. The probe is designed to find out if students recognize that air is made up of particles that are widely spaced with…

  • Is It a Rock? (Version 1)

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about rocks. The probe is designed to determine whether students recognize that rock is not a term for size and that rocks can come in many sizes and…

  • Turning the Dial

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about a physical property of matter. The probe is designed to reveal whether students recognize that under the same conditions, boiling point remains the…

  • Talking About Gravity

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about gravity. The probe is designed to determine whether students recognize that gravity is a universal force that exists everywhere on Earth and in…

  • Freezing Ice

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about freezing point. The probe is designed to find out if students recognize that the temperature at which water freezes is independent of the volume.

  • From the Field: Events and Opportunities, December 15, 2020

    Reports Article |

  • Whale and Shrew

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about cell size. The probe is designed to reveal whether students think animal cell size is determined by the size of the animal.

  • Is It a Theory?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the nature of science. The probe is designed to find out if students distinguish scientific theories from the common use of the word theory and if…

  • Is It Melting?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the physical process of melting. The probe is designed to find out if students recognize melting as a change in state from solid to liquid that…

  • Human Body Basics

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about levels of organization in the human body. The probe is designed to find out whether students recognize cells as the basic unit of both structure…

  • Objects and Temperature

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about temperature. The probe is designed to find out whether students recognize that non–heat-producing objects exposed to the same ambient conditions…

  • What Is a Hypothesis?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about hypotheses. The probe is designed to find out if students understand what a hypothesis is, when it is used, and how it is developed.

  • Floating High and Low

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about density and buoyancy. The probe is designed to find out how students think an object can be changed to make it float differently.

  • Boiling Time and Temperature

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the boiling point of a pure substance. The probe is designed to find out whether students recognize that the boiling point of a pure substance…

  • Seedlings in a Jar

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter in a closed system after a transformation of matter from seed to seedling has taken place. The probe is designed to reveal…

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