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  • 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…

  • 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…

  • Hot and Cold Balloons

    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 recognize that the mass of a warm gas in a closed system is the same after…

  • Mirror on the Wall

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about reflection of light. The probe can be used to examine how students use ideas about light to explain how we see objects in a mirror.

  • 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…

  • Apple on a Desk

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about forces. The probe is designed to find out whether students recognize that balanced forces act on a stationary object.

  • 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.

  • 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…

  • Cells and Size

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the size of cells. The probe can be used to determine whether students recognize how small a cell is relative to other things.

  • Sam’s Puppy

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about growth. The probe can be used to determine whether students recognize that growth occurs as a result of cell division, which increases the number…

  • Respiration

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about respiration. The probe is designed to find out whether students recognize respiration as a process that all living things use in order to obtain…

  • 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…

  • Earth’s Mass

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the cycling of matter. The probe can be used to determine whether students recognize that once-living matter breaks down and cycles through…

  • What Are Clouds Made Of?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about an everyday object in the sky: clouds. The probe is designed to determine whether students recognize that clouds are made up of tiny droplets of…

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