This short video shows the adventure of Slope Dude, which uses the ski run of Slope Dude to demonstrate positive slope, negative slope, a slope of zero, and a slope that is undefined.
Original Audio: https://www.youtube.com/watch?v=ZcSrJPiQvHQ&ab_channel=MathGivesYouPower
Thanks to @Ava_Hofmann for help with camera controls and editing!
