A really quick way of getting input from a big class and to allow learners to retain their anonymity is by using a live poll. I often use a poll when I am giving a presentation to get the audience to participate and encourage discussion.
I use a cool web site called DirectPoll. It allows me to put forward questions or statements that everyone can vote on using any device connected to the Internet. It is super easy to use, it’s completely free and a great way to get information in real-time for presentations or discussion points.
Use it in your CAT class to get a discussion going on one of your Theory topics perhaps.