Hi Lexi,
I am very happy to read the blog you shared, and the YouTube video you found clearly shows how to make a video with iMovie. First of all, I very much agree with your point of view. The video will be very helpful for teachers’ teaching or students’ learning. Because in my opinion, if only very boring text or numbers can not always attract the attention of students, and video will be easier to understand and accept by students than text. Especially for the current online courses, if all the courses are for students to read by themselves, then the study will be a little boring, so the interleaving of videos can alleviate this problem.