This Exit Ticket is a great way to assess your students after they have played Build It Change It during Math Workshop. Show a ten frame on the projector, and place a given number of counters on the ten frame. Have the students fill in their ten frame at their seats to match yours. Then, take away or add more counters. After students have seen whether or not you took away counters or added counters, they will make the proper adjustments on their ten frame as well. This will assess whether or not students can create an equivalent number of a given set, and if they can understand how many counters were taken away or added to the set.