This link has been bookmarked by 50 people . It was first bookmarked on 13 Aug 2007, by Linda Nitsche.
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Caren KimbarovskyChanging state, characteristics of materials, gases,liquids and solids, keeping warm, reverisble and irreversible changes, rocks and soils, solids and liquids
Science chemistry earthscience interactive primary Grades4-5 Grades2-3 middle_school
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Mitch WeisburghScience interactives on changing state, characteristics of materials, gases, liquids and solids, temperature, reversible and irreversible changes, rocks and soils, and solids and liquids from the BBC
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