 So I want to give you a little bit of an overview of our March 27th virtual lecture that you're going to be doing. First of all, there's a bunch of resources you need to use. There are some videos, including your normal pre-lecture video, and a few more I'll be placing here on the website. You've got a file, which is the practice problems worksheet I would have had you do in class. But in addition to that, we've got the solution keys for those practice problems. There's also going to be some extra example problems for you guys to look through. Now accountability, normally when I do a virtual lecture, I actually make you turn the worksheet into me to make sure that you've gone through the material, and I'm not going to have you do this this time. So it's up to you to understand that you need to learn this material. You don't have to turn the worksheet into me, but I'm going to know whether or not you learn it, because here on out, if you don't learn these concepts, it's going to be really obvious to me. So take these resources, use this time, and go ahead and learn the material.