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  • The Rusty Nails

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about a common phenomenon—rusting. The probe is designed to find out what students think happens to the mass of iron nails after a chemical change.

  • Is It Made of Cells?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about cells. The probe is designed to find out how students think about matter composed of cells.

  • Lemonade

    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 think matter is conserved when a substance is dissolved in a liquid.

  • Making Sound

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about sound. The probe is designed to reveal whether students recognize that sound is produced by vibrating matter.

  • What’s in the Bubbles?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about particles during a phase change. The probe is designed to find out if students recognize that the bubbles formed when water boils are the result of…

  • Finding High-Quality Science Materials

    Reports Article |

  • Mixing Water

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about temperature change in a system. The probe is designed to find out whether students recognize that heat moves from the warm water to the cool water…

  • The Mitten Problem

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about energy. The probe is designed to find out whether students think “warm clothes,” like a mitten, produce their own energy, manifested as heat.

  • Magnets in Water

    Journal Article |

  • Growing STEM Learning Opportunities With Agriculture

    Journal Article |

  • Giant Sequoia Tree

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the transformation of matter. The probe is designed to reveal whether students recognize that most of the matter that makes up the wood of a tree…

  • Desperate Times Call for Desperate Measures

    Case Study |

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