Thursday, May 5, 2016
For the time being, it seems that if you're in a school-domain using Google Apps for Education, only members of your domain can participate in the online question submission. But you can easily work around this by using a free Google account to create your slideshow.
You could use this to allow students to, anonymously or not, ask questions, or you can pose questions and allow them to post their responses. The audience "voting thumbs up or down" feature could likewise be used in a variety of ways.