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  • 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.…

  • 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 “Fitter”?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about natural selection. The probe is designed to find out how students interpret the commonly used phrase “survival of the fittest.”

  • Ice-Cold Lemonade

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about transfer of energy. The probe is designed to determine whether students recognize that heat flows from warmer objects or areas to cooler ones.

  • Global Warming

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about global warming. The probe is designed to find out what students think contributes to global warming.

  • Sugar Water

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about dissolving. The probe is designed to find out what students think happens to sugar when it dissolves in water.

  • 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.

  • Baby Mice

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about heredity. The probe is designed to reveal how students think organisms inherit observable traits.

  • 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.

  • Chicken Eggs

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about food, transformation of matter, growth and development, conservation of mass, and systems. The concepts underlying this probe are complex. It is…

  • 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…

  • Nails in a Jar

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter during a chemical change (oxidation). The probe is designed to find out if students think the mass changes as rust forms…

  • 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…

  • 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…

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