教学中发现学生“懂而易错”是一个普遍存在的现象:学生考完后感觉不错,但当拿到成绩时却大失所望,对于多次强调的易错、易混知识点,如重要反应的条件、特殊的实验操作、化学反应类型的判断、有机物官能团名称书写等,学生都觉得此类题非常简单,但往往会错,而且是一错再错。教师应采取何种方式才能使学生真正摆脱“懂而易错”的窘境呢?一、“懂而易错”现象存在的根源1.思维不清,知识掌握缺乏灵活性在遇到相似或相关问题时,学生答题的错误率往往 Teaching found that students “understand and easy to wrong ” is a ubiquitous phenomenon: the students feel good after the exam, but when disappointed with the results, the emphasis on error-prone, easy to mix knowledge points, such as important Reaction conditions, special experimental operation, the type of chemical reaction judgment, the name of the functional group of organic writing, etc., students think this kind of question is very simple, but often wrong, and it is a mistake again. What should teachers do in order to make students truly get rid of “Understand easily and wrongly” dilemma? First, “understand and easy to go wrong ” the root causes of the phenomenon exists 1, thinking is not clear, lack of flexibility in the knowledge When similar or related questions, the student answer the error rate often