Students practice finding the slope from 2 points this group collaborative activity. Teacher passes out 4 different versions of the worksheet, students work to solve the problems getting help from their group. When the timer goes off, students meet in one of the four corners matching their worksheet to compare and correct their answers, discussing with a new group.
When finished students return to their home groups to debrief as a class. Included is the exit ticket I have used to assess understanding. Exit ticket given in 3 different versions, can use all the versions with different students or use on different days.