And in doing the homework, it is perfectly okay to work in groups.

在做作业的时候,小组讨论是绝对允许的

耶鲁公开课 - 基础物理课程节选

I basically gave them free ray at the beginning, so they work in small groups, and travel from site to site.

在最初，我给了他们充分的自由，孩子们组成学习小组，在各地游览。

麻省理工公开课 - 媒体、教育、市场课程节选