Looking to integrate a little technology into your lessons? TodaysMeet is an online tool that allows you to have a backchannel discussion with your students.
The best way I can describe it is instead of students using a whiteboard and pen to interact with a lesson, you use TodaysMeet with computers and students can engage in a "real time" discussion. The teacher gives a question and students type in their responses on TodaysMeet. The students and the teacher instantly see on their computer the responses. TodaysMeet is very easy to set up and there is no email required to set it up.