教学,顾名思意,它包括教师的教和学生的学。教是手段,学到必要的基础知识,受到基本技能的训练,智力得到开发才是目的。教师的讲必须引导学生积极的学,没有学生积极的学,教学将是一句空话。要使学生学得积极主动,牢固地掌握知识技能,充分地发展智力,就必须注意学生的练。这样,矛盾就出现了,短短四十五分钟,又要教 Teaching, as the name suggests, it includes the teacher’s teaching and student learning. Teach is the means to learn the necessary basic knowledge, subject to basic skills training, intellectual development is the purpose. Teachers say must guide students to learn actively, without the active learning of students, teaching will be empty talk. To make students learn proactively, firmly grasp the knowledge and skills, fully develop the intelligence, we must pay attention to the practice of the students. In this way, contradictions appeared, in just 45 minutes, to be taught again