为全面推进课改,提高课堂效益,根据学科特点,制定切实可行的化学课堂教学模式。“四边”即“边学边导、边练边清”。“边学边导、边练边清”体现三原则、四环节。三原则是:学生自学为主体、学生训练为主线、学生发展为主旨。四环节是:目标揭示、学法指导;学生自学、教师巡导;学生展示、教师点拨;边练边清、巩固提升。一、目标揭示、学法指导 In order to promote the curriculum reform in an all-round way and improve the efficiency of the classroom, according to the characteristics of the subject, formulate the practicable chemical classroom teaching mode. “Four sides ” That “Learn to guide while practicing side clear”. “Learn while guided, while practicing edge clear ” reflects the three principles, the four links. Three principles are: student self-learning as the mainstay, student training as the main line, the main theme of student development. The four links are: target revealing, learning guidance; student self-study, teacher patrolling; student display, teacher’s point dialing; First, the goal of revealing, learning guidance