Free - or very inexpensive - online courses have become quite a trend in education.
Massive Open Online Course (MOOC) providers currently offer thousands of courses and have enticed millions of students to enroll.
The emphasis in MOOCs is often on lecture videos that students watch and learn from. However, a recent study shows that the central approach of MOOCs - having students watch to learn - is ineffective. Instead, the emphasis on interactive activities as advocated by CMU's Simon Initiative helps students learn about six times more.
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