Here's a useful idea for those of you whose kids love to work on activity pages. Slip worksheets or activity pages in plastic page protector sheets and place them in a three ring binder. Using dry erase markers and a cloth for erasing finished work, you can reuse the pages over and over again. This is especially good if you have more than one kid because you don't have to keep printing out pages.
I'm quite particular about which activity pages I choose to include in the binder. I prefer pages which encourage creative and logical thinking skills over simple and rote drill work. Because of Kiddo's attraction to numbers and systems I include a lot of mazes, number games and grid coloring work.