Hey @liherring67 this lesson had some significant updates in mid-June but has been stable since then. As @jold mentioned we do make ongoing changes to the curriculum in response to feedback but those changes for the next several months will be concentrated in Units 4 - 6 of the curriculum. Is there a specific difference between your printed version and the online version you'd like help with?
I agree with @jold that a "last updated" indication of some sort would be helpful. Sometimes we're going in and making tiny changes (e.g. fixiing typos) which probably isn't informative for teachers to know, so it's a system that we're going to need to discuss internally. In either case, however, please let us know when you have requests or challenges and we'll do our best to address them. That's what we're here for!