4 pages each with 4 unique absolute value equations.
Directions are as follows: In a group of four, you will each work on a different problem, then pass the paper clock-wise. You will then grade the problem done on the paper before being passed to you. If it is correct, initial and do the next problem, if wrong, correct, initial and move on
Problems get progressively more difficult, all #1s have a similar setup so that the group can discuss approach even though their numbers are different.