I use a CD to get the on line book. There is a post from me earlier about literacy centers. A Pd member sent me a link to help me. While I was there I noticed a online student book. Maybe you can look at that if you are in a pinch. I am not sure how to post a link, because I tried twice and it did not let me. The post was titled " Treasures literacy center help!!!
Register with www.mhln.com. You will need a code from your school district (about ten numerical digits or so) to access the fourth grade materials. The same materials are available on the MMH Lesson Planner CD-Rom that comes with the teacher's manuals. I brought the CD home and installed it on my personal laptop.