Partners will work on separate columns of problems that will result in the same answer to check each others' work.There is a set of 10 problems for each partner to complete. 6 problems are on finding missing sides and 4 problems are on finding missing angles.The RELAY RACE has some of these same problems. The RELAY has 32 different problems. This product has 20 problems.Posted: 11/5/14 so 50% off through 11/8/14