These sites are so good that I have abandoned Mahayla's spelling and Caleb's spelling AND reading books/workbooks for awhile.

www.spellingtime.com  gives the kids weekly spelling lessons and tests on their grade level.  I can boost the grade level up or down as I see fit and even put in my own spelling words if I want!  It provides lots of reinforcement through silly games that they earn - sometimes the games are a bit difficult to figure out, but my kids haven't minded.  If words are missed, the computer "teacher" even asks the kids to write those words three times on paper before earning the game time.  Both of my children are loving it!  In fact, they ask to do more than one lesson a day!!

www.progressivephonics.com has a whole set of downloadable phonics readers with teacher suggestions AND handwriting sheets, flashcards and a memory game to go with each book!  Caleb has struggled with reading (for lack of interest), but he's really enjoying these AND LEARNING TO READ BETTER!!  You'd better hurry if you plan to download while they're free.  I believe plans are in the work to begin charging (and they should - the materials are too good to be free really.)