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Product InformationExplain a wide variety of scientific principles with this simple device.Middle School teacher Bruce Sherbeck designed the demonstrator to show students the changes in atomic structure during the heating and cooling of iron. By placing the device on an overhead projector, you can illustrate the principles of annealing, hardening, tempering, and crystalline structure, as well as the phase changes of gases, liquids, and solids. Includes teacher’s guide with instructions and student lab. Grades 8–12. Size: 25 x 21cm.  Tell a Friend about this item
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