If you answer yet to any of the questions in the title of this post, then you should be looking at how you can better leverage technology to make those videos more useful. There are several out there that let you ask questions, polls, and discussion questions while your students are watching the video you select (whether you make it or you find it on YouTube, Vimeo, etc.). One of the most stable ones that I've come across is eduCanon. I've talked about them in past workshops, but I wanted to mention them again if you hadn't checked them out yet. So, go check it out and let me know what you think or if you need help. After Friday's workshop on video in the flipped classroom at the high school, I thought it would be the perfect time to bring it to your attention again. Click here to check it out and register for a free account!
I had a teacher ask me if there was a way to hide or remove students who are no longer in your class. The answer is maybe. It depends on if they are officially dropped from your class and appearing as red in your roster and gradebook. If not, then no, you cannot remove them until they have been unenrolled from the class. If the student is showing up as red in your gradebook though, you can hide them so you don't have to worry about them. Here is a screenshot to help you do it: