The books for this week's topic are expensive and look very difficult. I'm not sure my students (or me) are up to the task. There doesn't seem to be an assignment choice that takes a little easier look at this subject. The teacher notes emphasize the importance to future studies so I don't want to miss something important. The US History and Streams of Civilization books only have a couple pages each. Should I just go with one of those? HELP! I've got to order books soon.