Know Lounge is a free service for hosting online instructional sessions in the web browser on your computer or on your iPad. I initially reviewed the service in February and found it easy to use although a bit lacking of features. Today, Know Lounge announced the addition of new features that teachers will like.

Know Lounge now gives teachers control to specify whether or not students can use their webcams during a session. Teachers can also select some students to show webcams and keep other students’ webcams turned off. Of course, every student can choose not to use their webcams at all.

If you don’t want to use your webcam in a Know Lounge session you can use Know Lounge as an online whiteboard with voice chat enabled.

Finally, Know Lounge now includes a quiz function. You can create a quiz and have students take it during a live session. The results of the quiz can be shared with students or you can keep them private. The quiz function could be helpful in determining whether or not you need to reteach a topic.