The development of students' justifications for their positions regarding two theoretical models: Electron cloud or sodium chloride crystal—After engaging in different learning activities
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1984 ◽
Vol 23
(Part 1, No. 5)
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pp. 529-533
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1990 ◽
Vol 162
(2)
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pp. 443-450
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1997 ◽
Vol 23
(5)
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pp. 707-712
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