They're usually addressed to groups of people, and they deal with sort of philosophical sounding issues, and they give advice on group problems.

通常是写给一群人的，讨论哲学问题，给团体问题提出一些建议。

耶鲁公开课 - 新约课程节选

Also we will have students doing workshops and problem-solving where the students will solve problems as a group, a group of three and turn in a common work sheet.

我们还有学生做研讨会,以及问题解决,从而学生可以以三人小组为单位,解决问题,最后上交平常的作业。

麻省理工公开课 - 媒体、教育、市场课程节选