人们普遍认为传统教案教学法存在着许多弊端:一是教学的单向性。即以教师和课本为中心,更多地考虑教师如何把教学内容讲得精彩完美,而忽视了学生自主学习的意识和能力;二是教案的封闭性。即教师自备、自用教案,没有学生参与,学生在课前对教师的教学意图无从了解;三是学生学习的被动性。即学生不能主动学习,也不会合作学习, It is generally believed that there are many drawbacks to the traditional pedagogy teaching method. One is the one-way teaching. That is, teachers and textbooks as the center, to consider more teachers how to put the teaching content wonderful and perfect, while ignoring the students’ self-learning awareness and ability; the second is the closed lesson plan. That is, teachers bring their own, use their lesson plans, there is no student participation, students do not understand the teacher’s teaching intention before class; Third, the passive learning of students. That is, students can not take the initiative to learn, nor will they cooperate in learning,