This is a review activity for slope. The worksheet has a 4 by 4 grid with different activities and problems in each box. The students must choose 4 activities to complete as a review that form a four in a row horizontally, vertically or diagonally. I also encourage them to complete extra activities when they are finished with their four in a row. This is a great way to involve student choice in a lesson, as well as to differentiate. There are two versions of the activity included. The first page is a more complex version of the activity and the second page contains simpler tasks.