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  • Solids and Holes

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the density of a solid object. The probe is designed to find out whether students recognize that in this phenomenon, air is not displaced, such as…

  • 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.

  • Is It a System?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about systems. The probe is designed to find out whether students can recognize that things with parts that interact or influence each other are systems.

  • Where Does Oil Come From?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about an important fossil fuel used by humans. The probe is designed to reveal how students trace oil back to its original source of material.

  • Salt Crystals

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about crystalline solids. The probe is specifically designed to determine how students think atoms are arranged and move in a crystalline lattice.

  • Doing Science

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about scientific investigations. The probe is designed to find out if students recognize that scientists investigate the natural world in a variety of…

  • Where Would It Fall?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the distribution of land, oceans, freshwater, and ice. The probe is designed to find out whether students realize that most of the Earth is covered…

  • 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.

  • 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.

  • Me and My Shadow

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about light and shadows. The probe is designed to find out students’ ideas about how shadows change throughout the day.

  • 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…

  • Moonlight

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about light and the Moon. The probe is designed to find out what students think is the source of a full Moon’s light.

  • Camping Trip

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the effect of solar radiation on Earth’s temperature. The probe is designed to find out whether students realize the Earth continues to cool after…

  • 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…

  • Is the Sun a Star?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the Sun and stars. The probe is designed to uncover students’ ideas about the nature of stars and their recognition that the Sun is an average star…

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