Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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Sub Image2:Macro to Micro Structures
1) Atoms and Molecules2) Macro to Micro Structures 3) Energetics and Dynamics 4) Theory and Practice in Chemical Systems 5) Chemical Design 6) The Chemistry of Life 7) Chemistry and the Environment 8) Chemistry at the Interface
From: Cathy Danielson (cathydanielson@yahoo.com)
Date: Wed Jun 18 2003 - 01:15:23 EDT

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    I attended a ChemCom workshop last summer where the following idea was shared:
    Use tennis balls in their container to represent a solid (vibrate them in place). Put the tennis balls in a Zip-Lock bag to represent a liquid (still in close contact, but moving more randomly). Throw the balls around the room to show how random and far apart gas molecules are.
    This is a very simple idea but really gets the idea across. In fact I have used this model to start a discussion about what exactly a model is. The kids also totally get a kick out of seeing tennis balls being thrown around the room!
    Cathy Danielson
    Marshfield High School
    Coos Bay, OR

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