Let me tell you, I felt like I hit the jackpot! They have some really neat student activities for grades K-5.
When you go to the website www.fcrr.org you'll see the spot on the right for Instructional Materials for Teachers. If you click on that it will show the Student Center Activities split up by grades.
I clicked 2-3 since I teach 3rd grade. You'll be taken to a page where the resources are then split up by category including fluency, comprehension, vocabulary etc.
One that I found under the Fluency section was this Affix Zip activity.
Students practices reading the affixes and they record their progress on the little chart shown below. A lot of the activities have these progress tracking charts which is great for motivating students.
You may not be able to use everything from this site, but I'm sure you'll find a few resources that will be helpful. The best part is that it's all FREE! What teacher doesn't love that!?