新课程标准特别强调,在课堂教学中,教师要以人为本,一切为了学生,为了一切学生.“先学后教,当堂训练”的课堂教学模式正是顺应新课改发展的趋势和要求而进行的.为切实提高合格率和教学质量,作者对多年教学实践进行深入思考和总结,以期对教育战线上的同仁有所启迪,不断提高教学成效. The new curriculum standard emphasizes that in the classroom teaching, teachers should be people-oriented, all for the students, for all students. “The first class, after class training,” classroom teaching mode is in line with the development of new curriculum trends and requirements In order to effectively improve the pass rate and teaching quality, the author of many years of teaching practice in-depth thinking and summary, with a view to colleagues on the education front have enlightenment, and continuously improve teaching effectiveness.