To get the full effect of this short video, please do both of the following things:
1. Click on the little triangle in the bottom right-hand corner of the slide to start the video.
2. When the video begins, click on the little wheel ("Settings") under the YouTube logo, and slide the "Annotations" bar over so that you see the comments in the speech bubbles to include greater detail beginning at the 13 second point as the video plays.
Link to Video:
https://youtu.be/kS3EoxAYp0w