Have you answered the same question a million times (regarding some homeschooling thing)???? Yeah, me too. So what do I do? I make the 6th grader help the 4th grader. Genius, I know. I figure, it will reinforce what he should already know, he has far more patients with his younger brother at this stage of the day, and I can take 5 minutes to get a drink of water (cough me head off) and re-collect me thoughts!
So there you have it, solving the world's problems one day at a time :-)!