Something missing...........

We are into our third week of homeschooling and getting everything on our work plans checked off, but I feel like something is missing.  It's been bugging me a lot lately.  I think I've figured out that it has to do with the fact that we aren't doing as much "together" as last year.  Since I have a 6th grader and a 3rd grader, my two sons obviously have a lot of different needs academically.  They are in different levels of our Moving Beyond the Page curriculum.  Still, I'm thinking if we did more of our content area work "together" I would feel like we were having a richer experience.  Does that make sense?  I would love to hear from any of you about how you address this issue in your homeschool.  PLEASE comment!!