现代教学论十分重视学生的主体作用 ,数师不但要会教 ,而且要擅导。在教学中 ,要充分调动学生主动学习的积极性 ,使学生真正成为学习的主人。所以 ,教师不仅要备大纲、教材 ,更要备学生。“学案”由此应运而生。“学案”就是要求教师以课时为基本单位 ,专门为学生的学习设计。? Modern teaching theory attaches great importance to the main role of students. Several teachers must not only teach, but also be good at guiding. In teaching, it is necessary to fully mobilize the enthusiasm of students for active learning so that students can truly become masters of learning. Therefore, teachers must not only prepare outlines and textbooks, but also prepare students. The “learning case” came into being. The “study case” requires that teachers take the class as the basic unit and design specifically for students’ learning. ?