中学的每门课程的课堂教学都必须力求当堂解决问题,生物课的教学也不例外。因此,一方面教师必须充分备课,保证课堂教学的成功,另外,还有赖于课堂教学中学生的积极活动。更确切一点说:课堂教学应该是师生共同活动的过程。至于学生能否在课堂上积极活动则有赖于教师教课的艺术,是否能想尽一切办法唤起学生的注意力,自觉的去掌握教师所讲授的内容。在课堂教学中如何使学生的注意力高度集中是值得大家探讨的重要课题。学生能否在课堂上集中注意力,自觉的去领会知识,首先是要看教师平日是否已经教育学生使他们真 The classroom teaching of each course of middle school must strive to solve problems in the classroom. The teaching of biology courses is no exception. Therefore, on the one hand, teachers must prepare enough lessons to ensure the success of classroom teaching. In addition, they also depend on the active activities of students in classroom teaching. To be more precise, classroom teaching should be the process of common activities between teachers and students. Whether or not students can actively engage in activities in the classroom depends on the art of teachers’ teaching. Whether they can make every effort to arouse the attention of students and consciously grasp the content taught by teachers. How to make students’ attention highly concentrated in classroom teaching is an important topic worthy of discussion. Whether or not students can concentrate in the classroom and consciously comprehend the knowledge depends first and foremost on whether the teachers have educated the students on weekdays so that they really