新一轮课程改革给高中教学带来了机遇和挑战,要求教师在有限的教学时间里让学生得到充分发展。如何高效、高质完成教学目标,提高课堂教学的“有效性”已成为摆在教育者面前的一大课题。有效教学是对话式的、互动式的,在这种教学中,教师可以讲授,但不能总是只有一个声音。而教学是否出现和维持某种对话式、互动式的状态,取决于教师是否能够有效地提问。有效的课 The new round of curriculum reform has brought opportunities and challenges to high school teaching, requiring teachers to make full use of their students in a limited teaching time. How to accomplish the teaching goal efficiently and with high quality and improve the “validity ” of classroom teaching has become a major issue facing educators. Effective teaching is conversational and interactive, in which teachers can teach but not always only one voice. Whether teaching appears and maintains some kind of dialogue and interaction depends on whether teachers can effectively ask questions. Effective lesson