Have you thought about looking into “homework help” places for them? I know alot of schools offer after school help on homework and so do many of public libraries. Those are often free. Aside from that, there are also centers and private tutors that can help with homework, and they may not be as expensive as you think. The year after my son was born, I tutored a 6th grader after school every day and got all his homework done with him for $70 a week. You might even find a high school kid willing to do homework with one of the kids for a very reasonable amount. Not having to split your attention would take alot of the stress off of you.