“课”作为教学结构中的基本单位,其重要地位,每个教学工作者均有极为深刻的认识。良好的开端是成功的一半。实践证明,在系统学习学科知识之前,学生应该在教师的指导下,对即将学习的新学科的历史、现状和未来有一个总体的认识。即了解本学科研究对象所具有的特殊矛盾性,并体会 As a basic unit in the teaching structure, “class” is an important position. Every teaching worker has a profound understanding. Well begun is half done. Practice has proved that before systematically studying subject knowledge, students should have a general understanding of the history, current situation and future of the new discipline to be learned under the guidance of the teacher. That is to understand the special contradictions that the subjects of the subject have and understand