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  • Learning Science in Informal Environments

    Position Statement |

  • 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…

  • 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.

  • Leadership in Science Education

    Position Statement |

  • 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 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.

  • $13.2B in Emergency Money for K–12 Schools Now Available

    Blog Post |

  • Mixing Water

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about temperature change in a system. The probe is designed to find out whether students recognize that heat moves from the warm water to the cool water…

  • Is It an Animal?

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about animals. The probe is designed to find out what characteristics students use to determine whether an organism is classified as an animal.

  • 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…

  • Floating Logs

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about floating and sinking. The probe is designed to find out if students think changing the size of an object affects how it floats.

  • Ecosystem Cycles

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about the transfer of matter and energy in ecosystems. The probe is designed to reveal whether students recognize that only matter is cycled through an…

  • The Teaching of Evolution

    Position Statement |

  • Standing On One Foot

    Lesson Plan |

    The purpose of this assessment probe is to elicit students’ ideas about weight and pressure. The probe is designed to determine whether students think their weight changes when the force exerted per unit area (pressure…

  • Responsible Use of Live Animals and Dissection in the Science Classroom

    Position Statement |

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