Some of your students will start the class with a strong peer-support network. To ensure that all students have access to an informal support network, provide structured collaboration opportunities where students can get to know each other. For example, you can assign groups or require interaction between students in class. I also encourage students to exchange contact information to try to remove the social stigma of asking their peers for their contact information.
Example: "You'll work with your assigned partner in class today."
See this and related tips as a Tip Sheet: http://csteachingtips.org/tips-for-encouraging-help-seeking