Give students (or a group of students) a problem to work out with a whiteboard or marker. Stamp their "graded practice card" after their work is checked (i.e. red stamp = needs word; blue stamp = great job) to track their progress weekly. Print 2 copies to make it 2-sided, so students can use the same card for 2-weeks, with up to 5 practice problems per day. Best results if printed on card stock paper. There are 4 cards on one sheet to save paper. Perfect for interactive notebooks.