加涅说过:“教学是一组经过精心设计的用以支撑学生内部学习的外部行为。”笔者以为,教师精心设计问题,在课堂教学过程中实现师生积极、有效和高质量的多向互动,能激发学生的自主探究意识,培养学生的自主学习能力,实现高效课堂。 Gagne said: “Teaching is a group of well-designed external behaviors that support the internal learning of students.” "The author believes that teachers are well-designed questions to achieve a positive, effective and high-quality teachers and students in the classroom teaching process Multi-directional interaction, can stimulate students ’awareness of self-exploration, develop students’ ability to learn independently, and achieve efficient classroom.