“聚焦课堂,有效教学”是实现“高质量、轻负担”的有效途径。而要提高教学有效性需要有一个良好的外部环境:学生的主体地位与学习信心;需要灵活运用教材,优化教学设计;需要善于捕捉生成,还需要善于优化作业、精选练习和进行必要的反思。 “Focus on the classroom, effective teaching ” is an effective way to achieve “high quality, light burden ”. To improve the effectiveness of teaching, we need to have a good external environment: students’ subjective position and confidence in learning; need to make flexible use of teaching materials to optimize teaching design; need to be good at capturing and producing, and also need to be good at optimizing homework, selecting practice and making necessary reflection .