If you are looking to have a synchronous online meeting with your students, you can easily accomplish that with CourseSites by Blackboard. It is a full featured version of Blackboard and allows free hosting of up to 5 courses. I use it to create a “meetings” course and then use the Live Meetings tool. It’s a full featured online meeting software for up to 50 people. Students loved the interface and they had no difficulty joining in the session. Allows for audio, video, and has a chat box for interaction with students.