我们所说的“学案”是指教师依据学生的认知水平、知识经验,为指导学生进行主动的知识建构而编制的学习方案。学案实质上是教师用以帮助学生掌握教材内容,沟通学与教的桥梁,也是培养学生自主学习 What we mean by “case study” refers to the learning plan prepared by the teacher based on the students’ cognitive level and knowledge experience and in order to guide the students in their active knowledge construction. Case is essentially a teacher to help students master the content of teaching materials, communication and learning to teach the bridge, but also to develop student self-learning