教师只有对自己的教学理念、教学设计、教学方法、课堂教学结构、教学资源的运用进行深入反思、总结和改进,引导学生参与获取或主动获取知识,并把学生的活动引向设计性、探索性的方向发展,才能真正提高化学课堂教学有效性,化学课堂才能焕发出生命活力。教学活动是师生间有计划、有目的的共同活动,在师生双向活动中,优化信息的反馈,能使教师及时准确地了解学生的学习情况,有效地调整、控制教学,也能使学生更有效 Teachers should reflect on, summarize and improve their own teaching concepts, teaching design, teaching methods, classroom teaching structures and teaching resources, guide students to acquire or take the initiative to acquire knowledge, and lead the activities of students toward the design and explore The direction of sexual development, in order to truly improve the effectiveness of chemical classroom teaching, chemical classroom to full of vitality. Teaching activities are planned and purposeful joint activities between teachers and students. In the two-way activities of teachers and students, optimizing the feedback of information can enable teachers to understand students’ learning situation timely and accurately, to effectively adjust and control teaching, and to make students More effective