This week was an introduction to limits, which so far was quite easy apart from a few problems that were a challenge. As long as there's no divide by zero error, you can just put the limit in for x. However most of the time there is a divide by zero, because the book loves to make extra work, but it can easily be fixed by taking x out of the denominator. The way we reviewed the homework in class I thought worked nicely, as the old saying goes: two heads are better than one. My mind usually can only see a few ways to work a problem, but other people had very different ways to solve the problem, and at least one of those solutions usually works. I never found myself using any of the properties of limits, but they seem like they're just the distributive property for limits. One sided limits were easy enough, just evaluate the limit from one side of the graph. I agree with Mr. Cresswell that the guy in the khan academy video was really annoying, and he took about five minutes to explain that if g(x) < or = to f(x) < or = to h(x) and lim g(x) = lim h(x), then lim f(x) = lim g(x) and lim h(x).