Students start with +0 and work through the drill in your designated time (I usually give them 1 min- 1:30 sec. If they complete it with 100% accuracy in the time allotted; they get to move onto the next test for your next timed practice. Each time they successfully complete a test; they receive a popsicle stick or “fry” in their fry box. Have students Practice these as many times as you can , and see them gain math fluency! Keep track of progress on your fry chart, display fry boxes on bulletin board…offer a reward for milestones….be creative!