Linear motion
As per notes made January 2018 , I shifted back to using meters for the RipStik linear motion exercise to simplify Desmos data entry. Prior to class I measured out a 30 meter run with timing marks every three meters. I also set up a Desmos table with the distance data, leaving the time cells blank. This pre-class work was even more necessary fall 2018 as the class periods are now 50 minutes long, as opposed to 55 minutes as they were last term. I had to go over the Friday quiz and then move out to the sidewalk to gather data. I prefaced the sidewalk work with a speed calculation from Friday's long run: 15015 meters ÷ 6000 seconds = 2.50 meters per second. I do not know that this helped as an introduction to speed. The run ended at 15.78 seconds and 30 meters. As seen on the graph, the slope displays well on a "square" graph, something that was not the case when the distance was in centimeters. Wednesday I demonstrated Desmos on the television monitor at th...