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Optimiz Students Cognitive Structure and Improve Chemical Learning Efficiently
Author(s): 
Pages: 6-7
Year: Issue:  3
Journal: Experiment and Equipment for Primary School

Abstract:  在高中化学教学中,教师经常遇到两种情况:第一,学生对新知识完全陌生,且新知识本身较为复杂,学生原有认知结构中缺乏适当的上位观念来吸收新知识,即学生的认知结构中没有起固定作用的观念可以利用,第二,学生对新知识不完全陌生,但不能明确新旧知识间的差异性,即学生对原有认知结构中虽有适当的概念,但不稳定、不清晰,难以成为新知识的固着点,即认知结构不稳定,不清晰.在上述两种情形下,如果教师不能有效地帮助学生...
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