托尔斯泰说:成功的教学,所需要的不是强制,而是激发学生学习的兴趣。兴趣是学习的动力,当一个学生对某个学习发生兴趣时,学生心情愉快,学习效率极高。这一时刻被称为“兴奋点”。课堂是学生求知、进取、成长的主要阵地,但在学习过程中每位学生在每个时间段里不可能始终保持兴奋的状态, Tolstoy said: Successful teaching does not require coercion but stimulates students’ interest in learning. Interest is the driving force of learning. When a student is interested in a certain learning, the students are happy and the learning efficiency is high. This moment is called “excitement”. Classroom is the main position for students to learn, enterprising, and grow up, but each student cannot always remain excited during each period of time in the learning process.