And similarly, particularly for those less comfortable, do we offer prior to the start of each week for a new piece at what we dub a walkthrough whereby one of the teaching fellows will literally start on the first page, give you a mental framework for the week's problems and talk about the ideas that it covers, and then walk through the piece set so that you have a roadmap of sorts that you can follow.

同样，特别对于那些不熟悉编程跟不上进度的同学，每周上课前都可以预习新的知识点,一名教师从第一页开始,对于每周的问题,都给你们简历一个心理框架,并讨论它所涵盖的思想，然后了解了每个部分之后,就可以有个学习的路线图。

哈佛公开课 - 计算机科学课程节选