The students work with activities on their computer screen and wear a headset and microphone to talk to their tutor.

VOA: special.2011.04.21

When I ask for classroom discussions, I'm going to have one of the T.A.S go to you with a microphone much like in "Donahue" Or something. Okay.

当我们进行随堂讨论时,我会请一位助教拿着麦克风到你那,就想多纳休那样

耶鲁公开课 - 博弈论课程节选