1.5 weeks into the school year, we're having the same issues here. My kids are liking all the pictures in the Usborne Internet-Linked Encyclopedia of the Ancient World, and I'm going to start trying to focus on that first with each new topic to grab the kids' attention so the reading in SOTW will make more sense to them (rather than reading SOTW first, then looking at the encyclopedia). If that doesn't work, I think I'm going to shelve SOTW, do a year of world geography, and try again next year.