This is the first lesson I teach in physics. It's basically a PowerPoint lesson that I use to show how math is used in physics. The PowerPoint includes the slides one presents, and immediately following the slide that is meant for presenting, there is a slide where I explain how I used the slide, any information on what else you can bring up, etc. The video file is just a walkthrough of the PowerPoint lesson. It's the same as what is given in the teacher information slides, just done as a video for those that prefer this method.