The entire 8th grade CCSS curriculum broken down into 127 I Can statements to really fine tune specific skills. Use this to identify exactly where your students are struggling with math.
Students rate and date at the beginning of the unit on a scale of 1-4 (4=no mistakes, 3=can do it, but make mistakes, 2=I can get started but I get stuck frequently, 1=I don't know where to begin). Then have then shade the bar graph to the right. Each time you assess, have them rate, date, and graph in a new color to show growth.
This has helped my students with their confidence and to pinpoint where they need work.
This is an updated version of my free SBG tracker and the skills have been broken down more here than the other.
8th Grade Math Data Tracker Bundle
8th Grade Math Data Tracker (Teacher Edition)