Zip File includes - PDF and editable documentLesson Setup: Â This lesson can be used for students at all developmental levels. Â Measuring with a ruler, error analysis, and proportional thinking are a few of the skills this lesson practices. Â Groups can be made based upon skill requirements. Lower functioning students can perform measurements and watch higher performing students do calculations. Â Result could also be presented by a possible third student - if you want to do trios as opposed to pa