教育心理学研究表明:学生的思维往往从问题开始.著名教育家陶行知先生说:“发明千千万,起点是一问;智者问得巧,愚者问得笨”.课堂提问是物理课堂教学的一种重要手段,它不仅能巩固知识,反馈教学信息,而且能激发学生的学习兴趣,发展学生的口头表达能力,增强学生的自主学习和合作探究能力,进而培养学生的思维能力.如果课堂提问把 Studies in educational psychology show that students’ thinking often begins with problems. The famous educator, Mr. Tao Xingzhi, said: “Invention of tens of millions, the starting point is a question; wise people are very clever, and fools are stupid.” The physics classroom teaching is an important means. It can not only consolidate knowledge and feedback teaching information, but also can stimulate students’ interest in learning, develop students’ oral expression ability, and enhance students’ ability of independent learning and cooperative inquiry so as to cultivate students’ thinking ability. If the class asks