认知同化理论将影响学生的最重要因素概括为学生已有的认知结构,强调学生的学习应该是有意义的接受学习,通过新知识与学生认知结构中有关观念的相互作用实现新旧知识的同化,确保学生形成有条理的知识系统。化学概念是化学学习中的重点内容,而初中化学则是化学专业的基础,对学生今后学习化学相关知识具有非常重要的作用。纵观初中化学教学历程发现,学生认为化学学科太难,教师找不到化学学科的切入点,使得化学教学水平普遍偏低,对化学教学目 Cognitive assimilation theory summarizes the most important factors affecting students as the existing cognitive structure of students, emphasizing that students’ learning should be meaningful to accept learning, and that new and old knowledge should be realized through the interaction between new knowledge and related concepts in the cognitive structure of students Assimilation to ensure that students form a structured knowledge system. Chemistry concept is the key content of chemistry learning, while chemistry of junior high school is the basis of chemistry major, and plays an important role in learning chemistry related knowledge for students in the future. Throughout junior high school chemistry teaching process found that students think chemistry is too difficult, teachers can not find the starting point for chemistry, chemistry teaching level is generally low, the chemical teaching