【TED演讲】教师需要真实的反馈（5/6)
Until recently, many teachers only got one word of feedback a year: “satisfactory.” And with no feedback, no coaching, there’s just no way to improve. Bill Gates suggests that even great teachers can get better with smart feedback -- and lays out a program from his foundation to bring it to every classroom.Hints:
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http://t1.g.hjfile.cn/listen/201309/201309280418024378216.mp3One day, we'd like every classroom in America to look something like that. But we still have more work to do. Diagnosing areas where a teacher needs to improve is only half the battle. We also have to give them the tools they need to act on the diagnosis. If you learn that you need to improve the way you teach fractions, you should be able to watch a video of the best person in the world teaching fractions. So building this complete teacher feedback and improvement system won't be easy. For example, I know some teachers aren't immediately comfortable with the idea of a camera in the classroom. That's understandable, but our experience with MET suggests that if teachers manage the process, if they collect video in their own classrooms, and they pick the lessons they want to submit, a lot of them will be eager to participate.我们希望有一天，美国的每一个课堂都可以像这样。但是我们还有很长一段路要走。确定问题所在只是完成了战斗的一半。另一半就是给教师们对症下药所需要的工具。如果你知道你需要提高教分数的方法，你就需要看世界上教分数教的最好的人的教学视频。建立这个完善的教师反馈和提高系统是不容易的。例如，我知道一些教师最开始的时候并不愿意被录下授课过程。这可以理解，但是MET的经验告诉我们，如果由教师来操作这个过程，如果由他们收集授课视频并挑选他们愿意上传的视频，大部分教师很愿意参与。
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