D. Christopher Brooks 

How do we evaluate the effectiveness of MOOCs? What are some of the important factors we should look at?

Should the MOOCs videos be shared or must the teachers record the content themselves?

When we teach MOOCs or micro-lectures, teachers often choose a specific point, but  you mentioned in the lecture that we should focus on the big ideas. Can you explain what the big ideas are?

演讲者阐述了慕课的发展历史，从慕课的概念，参与者及出现的原因方面加以阐述，提供了相当详细的数据。也对教师和学生进行了一些调查，包括对慕课的认识、任可和执行情况。