Ed Puzzle has a lot of features that are easy to use as a teacher and make your video into a lesson. You can use any video that you upload or from youtube including khan academy or Ted videos. As the teacher you can crop the video or or add a voiceover or audio notes throughout the video as well as quizzes which can be multiple choice questions or open ended questions. In my bee video example, I added activities in the open ended quiz video section that I wanted the students to complete in the classroom before we continue to video. When a quiz question or an audio note comes up in the video, the video will stop.
In my bee puzzle video I would use it in a full class activity rather than having students go through the video and activities on their own.