高中学生的学习任务繁重,面临高考,课业负担困扰着他们。减轻学生的课业负担,就要提高课堂教学效率,在有限的时间内完成预定的教学目标。提高课堂教学有效性的关键是提高效率。研究怎样学,是教师提高教学效率的核心问题。 High school students are arduous tasks, face college entrance examination, homework burden troubled them. To alleviate the burden on students’ homework, we must improve the efficiency of classroom teaching and accomplish the scheduled teaching goals within a limited time. The key to improving the effectiveness of classroom instruction is to improve efficiency. Studying how to learn is a key issue for teachers to improve their teaching efficiency.