随着我国教育改革的不断推进,课堂教学也在发生着深刻的变革。而初中科学新教程要求教师注重培养学生的自主性和独立性,引导学生学会如何质疑、调查、探究,在实践中去学习。在这种状况下,就必须要重视教师的引导作用,只有构建合理的引导策略,才能提高课堂教学效率,因此,高效的教学就要从课堂导入开始。 With the continuous promotion of education reform in our country, profound changes have taken place in classroom teaching. The new curriculum of junior high school science requires teachers to focus on training students’ autonomy and independence, and guide students to learn how to question, investigate, explore and practice in practice. In this situation, we must attach importance to the guiding role of teachers. Only by constructing a reasonable guiding strategy can we improve the efficiency of classroom teaching. Therefore, efficient teaching should begin with the introduction of the classroom.