In precalculus two days ago, we watched a short youtube video that I love on how Imaginary Numbers are Real. We only watched Part I (of many parts).
I like this set of videos. There are a bunch of “meh” videos out there, but these don’t fall in that category! At the end of class, I emailed the video, which links to the other parts of the video. A couple kids told me that they watched like 6 of them. I love it! Math for fun! Math for fun!