I directed the students to the edpuzzle.com website and then they logged in with their google account and class code I gave them. They plugged headphones into their iPads and then found some place in the room to watch and answer the questions. Many of them sat on the floor to watch the video. I could see on my computer which questions they had answered, if it was the correct answer, and how many times they had watched the video segment associated with the question.
I included open ended questions and multiple choice questions in the video quiz. The website grades the multiple choice questions, lets me quickly grade the open ended questions, and then I can see their percentages in a spreadsheet.
One of the quirks that I came across this first time in using the program was that a couple of students were able to skip a question even though I chose in the settings to disable the skip questions feature. But since I was on the website monitoring their progress, I could check with the student to see where they were at in the video and redirect them back to the skipped question.
I am planning on using this method of video quizzes more often. I would like to avoid showing a video to the whole class on the overhead projector because the edpuzzle method allowed students to go at their own pace and re-watch segments if needed.