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2021, Vol. 42(5): 54-65    DOI: 10.13884/j.1003-3807hxjy.2020040155
Representation of High School Chemistry Teachers' Pedagogical Content Knowledge of “Amount of Substance”at Different Stages of Development
YANG Bei, SHI Hong-Xia**
Teacher Education College, Shanxi Normal University, Linfen 041000,China
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