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  • Solids, Liquids, and Gases

    Book Chapter |

    The purpose of this assessment probe is to elicit students’ ideas about the concept of matter. It is designed to find out how students define matter and whether they recognize that all three states—solids, liquids, and…

  • Pressure, Temperature, and Volume of Gases

    Book Chapter |

    The purpose of this lab is to introduce students to the gas laws related to pressure, temperature, and volume of gases. It gives students an opportunity to develop a mathematical model that can be used to describe “How…

  • Invisible Gases Matter: Knowledge Pours Poorly

    Book Chapter |

    Invisible gases are a form of matter that have volume or occupy space. In this activity, water flows down through two identical funnels, each inserted in a two-hole stopper, into two identical flasks. The water flows at…

  • Tried and True: Splints and gases

    Journal Article |

    This column provides classic demonstrations and experiments with a new twist. In this month’s issue learn how chemical reactions carry much more impact when experienced firsthand rather than through pictures in a…

  • Blue Solids, Red Liquids, and Yellow Gases

    Journal Article |

    During this eye-opening unit, students create visual representations of some very abstract concepts, and in the process eliminate many of their misconceptions about matter. All you need are some colored pencils and…

  • Tried and True: It's a gas! An exploration of the physical nature of gases

    Journal Article |

    Gases present something of a paradox for the casual observer--they are everywhere and yet, it remains difficult to see them anywhere. This instructional sequence engages middle school students in the inquiry process,…

  • Properties of Gases

    Case Study |

  • Air and gases

    Blog Post |

    Click on the cover for the Table of Contents April is the month of Earth Day, and this issue on air and gases also has ideas for environmental studies related to the atmosphere. The article Using Citizen…

  • Learning with Inquiring Minds: Students are introduced to the unit on gas laws and properties of gases using the 5E model

    Journal Article |

    In this article, the teacher moves from a lecture-oriented classroom to a student-centered classroom by redesigning the unit on gas laws based on the five phases of the 5E instructional model—engagement, exploration,…

  • Properties and Behavior of Gases

    Collection |

    Resources for students to learn about why gases behave the way that they do.

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