A change in pace?

I think we hit a snag in our studies last week. It's not that Zach is having difficulty in anything we're doing,but I think he might be overwhelmed by something. I think I'm going to ditch the schedule and see how it goes. I'm also thinking about maybe letting him do some things online. He has been working on math at KHAN ACADEMY and really seems to enjoy it. And of course,he loves anything on the computer. I found TIME 4 LEARNING. It also keeps track of the progress and I like that. I think we will be adding it to our studies next week. What are some of your favorite "non traditional"-study aids? What are some things you do when you or your kids get overwhelmed with things?