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  • Iron Bar

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about atoms. The probe is specifically designed to determine whether students can use the idea of atoms to explain why a metal expands when heated.…

  • 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…

  • Thermometer

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about thermal expansion. The probe is designed to find out whether students attribute expansion of the space between molecules to the rise of the liquid…

  • Does It Have a Life Cycle?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about life cycles. The probe can be used to determine whether students recognize that although life cycles vary in length and developmental stages, all…

  • Chemical Bonds

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about chemical bonds. The probe is designed to find out how students interpret molecular models.

  • 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.

  • Pennies

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the properties of atoms. The probe is designed to determine whether students can distinguish between the microscopic properties of an atom and the…

  • Floating Balloon

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the mass of a gas. The probe is designed to reveal whether students recognize that an uninflated balloon will increase in mass when inflated with a…

  • Batteries, Bulbs, and Wires

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about complete circuits involving lightbulbs. The probe reveals whether students recognize the pathway of electricity in a complete circuit, including…

  • Rolling Marbles

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about circular motion. The probe is designed to determine whether students recognize that an object will move in a straight line unless acted upon by an…

  • Dropping Balls

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about falling objects. The probe is designed to find out if students think the weight or mass of an object affects how fast it falls.

  • Rotting Apple

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about decay and decomposers. The probe can be used to determine whether students recognize the need for a biological agent to break down once-living…

  • Where Do Stars Go?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about stars. The probe is designed to examine students’ ideas about the location of stars in the daytime.

  • 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.

  • 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.

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