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| 下载 : 4K Ultra HD | 3840x2160 | 12313Kbps |
| 下载 : Quad HD | 2560x1440 | 6321Kbps |
| 下载 : Full HD | 1920x1080 | 3495Kbps |
| 下载 : HD | 1280x720 | 1967Kbps |
| 下载 : SD | 960x540 | 1184Kbps |
| 下载 : SD | 640x360 | 717Kbps |
| 下载 : SD | 426x240 | 446Kbps |
| 下载 : MP3 | audio only |
Find free online courses, lectures, and videos from the best colleges in the country. Take online classes from schools like Yale, MIT and Stanford. Rethink Education Academic Earth was launched on the premise that everyone deserves access to a world-class education. In 2009, we built the first collection of free online college courses from the world’s top universities. The world of open education has exploded since then, so today our curated lists of online courses are hand selected by our staff to show you the very best offerings by subject area. We also make sure there is something for everyone: whether you want to explore a new topic or advance in your current field, we bring the amazing world of academia to you for free. Featured Online Programs Find Online Courses by Subject Accounting Business Education Management Marketing Psychology VIEW ALL SUBJECTS Explore Free Online College Courses from Our Featured Universities 232 COURSES 161 COURSES 64 COURSES VIEW ALL UNIVERSITIES Video Electives Practical Math: How to Take a Punch TL;DR Atlas Shrugged TL;DR Fahrenheit 451 Rethink Education VIEW ALL ELECTIVES