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《义务教育化学课程标准》明确指出:“形成一些最基本的化学概念,初步认识物质的微观构成,了解化学变化的本质特征,初步认识物质的性质与用途之间的关系。”布鲁纳在《教学过程》一书中指出:“一门课程在它的教学过程中,应反复地回到这些基本概念,以这些概念为基础,直到学生掌握了与这些概念相伴随的完全形
The Compulsory Education Chemistry Curriculum Standard clearly states: ”The formation of some basic chemical concepts, preliminary understanding of the micro-composition of matter, understanding of the essential features of chemical changes and preliminary understanding of the relationship between the nature of matter and its use.“ ” In the Book of Teaching Process, Na pointed out: "A course in its teaching process should be repeated back to these basic concepts, based on these concepts, until the students have mastered the complete concomitant with these concepts