Massachusetts Institute of Technology, for example, is offering free lecture notes, exams and videotaped lectures by MIT professors to the online world.

比如，麻省理工学院为在线世界提供免费讲座笔记、考试以及录制好的MIT教授讲座。

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Estimate-convergence graph for software development, taken from Lecture 3, entitled "Software Schedule Estimation, " in the lecture notes section. (Image courtesy of MIT OCW. )

软体开发的预估收敛图， 取自课堂讲稿第三课，讲题为「预估软体开发的时程」。（图片由麻省理工学院「开放式课程网页」提供）

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Through the OpenCourseware Web site, lecture notes, exams and other resources for more than 1, 800 MIT classes are available online for free.

FORBES: Bill Gates