随着新一轮课程改革的深化,在课改理念和新课程标准的影响和要求下,高中化学的课堂教学必然要走一条“有效、优效、高效”的道路,不能靠加班加点跟学生耗时间这种简单的体力劳动的低效教学,而应该向课堂要效益,切实减轻学生负担。这无疑对广大一线的化学教师提出了更高的挑战,它要求教师必须精心设计每一堂课的教学环节:课堂导入,知识新授,练习巩固,课堂小结。只有这样,高中化学课堂 With the deepening of the new round of curriculum reform, under the influence of the concept of curriculum reform and the new curriculum standards, high school chemistry classroom teaching must inevitably take a “effective, effective and efficient” road, can not rely on overtime Spend time with the students this simple physical labor inefficient teaching, but should benefit the classroom, and effectively reduce the burden on students. This undoubtedly poses a higher challenge for the majority of first-line chemistry teachers. It requires teachers to carefully design the teaching steps of each lesson: class introduction, new knowledge, practice consolidation, and classroom summary. Only in this way, high school chemistry class