 Welcome to class for February 18, 2015. Today's going to be just a little bit different. Hello there. You may have noticed I'm not the one up in front of the classroom. I'm doing my civic duty, serving as a juror on a traffic court case, and I will not be on campus today. Unless, of course, court gets canceled and then I'll be back and you'll be seeing me. But just in case I'm not there, I've went ahead and recorded a bunch of video clips so that you can know what's going on and be able to follow through. So, here's some basic announcements. Just as reminders, again, you've got WebAssign homework number six is the one you're supposed to be working on. Normally, these are due on Friday, but because of our delay with the class that got canceled last week, we weren't quite done with everything, and so it's going to be due on Monday. Now, I'll remind you to use the Ask Your Teacher button, and if you need to do one of your old assignments, make sure that you're using your request on that. We should be finishing up all the material for chapter 24 that you need for homework number six today in class. I'm also going to remind you to be looking on Blackboard. If you didn't check, there was a pre-lecture quiz for today. If you haven't gotten it done yet, get it done here real soon after class so that you don't get too much of a late penalty. There will also be a pre-lecture quiz for Friday. That one may not be up yet, but it will be up by the end of the day. And, of course, keep looking for resources, both for new videos that may have been added for individual lectures and also for any answer keys that I might be posting. If you do have questions, remember that you can ask via email or using that WebAssign Ask Your Teacher button. I'm also going to have some extended office hours on Thursday after I finish my 12.30 class all the way up until four o'clock. That way, if you guys need to ask some questions, even though I wasn't available today, you've got plenty of time tomorrow to be able to get in and see me. So how is this going to work today? Well, you're going to watch the video clips. And after each video clip, the person who's helping me out covering the class will stop the video. And you've got some questions on your sheet. Now, I recommend that you go ahead and read through all of the questions right away so that you kind of know what to be thinking of as you're watching the videos. Answer those questions and maybe even work out a numerical problem. Discuss is needed, but you need to move on, which means we can't spend a lot of time discussing if you're really stuck on one particular part. At the end of the class, you'll turn it all in and don't forget to sign the roll. So make sure that you're paying attention to all these video clips and after the end of the video clips, we'll go over and make sure you understand how to solve the particular problem or conceptual question you've got on your sheet. Thanks a lot. Keep watching the videos.