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Here are a couple of pictures from Andrea Austad’s 8th grade students working with Desmos, an online graphing calculator. They spent a few weeks calculating slope of a line through various different methods and situations. In order to introduce writing equations using the slope of a line, Mrs. Austad set them to work using tasks created through the teacher/student version of Desmos. The students discussed, used trial and error and really had a great time learning about how the slope and y-intercept effect lines by using this engaging activity.