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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 Living?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about living and nonliving. It is designed to find out what attributes students consider when determining if something is living or was once living.

  • Birthday Candles

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about how we see objects. The probe is designed to find out if students know that light must be reflected from an object and enter the eye in order to…

  • Is It Matter?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about matter. The probe is designed to reveal the characteristics students use to describe and define matter.

  • 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.

  • Mountain Age

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about processes that affect the shape of mountains. The probe is designed to reveal whether students understand the role of weathering in shaping…

  • 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…

  • Apple in the Dark

    Lesson Plan |

    Imagine you are sitting at a table with a red apple in front of you. Your friend closes the door and turns off all the lights. It is totally dark in the room. There are no windows in the room or cracks around the door.…

  • Wet Jeans

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the water cycle. The probe is designed to reveal whether students recognize that water goes into the air around us after it evaporates.

  • Beach Sand

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about beach formation. It is designed to reveal whether students use concepts of weathering, erosion, and deposition to explain how a beach made up of…

  • 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.

  • Can It Reflect Light?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about reflection. The probe is designed to find out if students recognize that all objects we can see reflect some light.

  • Gazing at the Moon

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the Earth-Sun-Moon system. The probe is designed to uncover students’ ideas about Moon phases and whether they think the phase of the Moon changes…

  • 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.

  • Is It Made of Molecules?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about molecules. The probe is designed to uncover whether students recognize that objects, materials, and substances of both a biological and physical…

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