Uphill, To School and Back Again, Finally Explained With Science, Common Core Style

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I saw a post of FB today from an old student of mine who is now in her senior year of college. The dialogue in the post was one college student asking a college dropout why they quit school. The punch line was that the dropout quit school because they couldn't find parking. That got me thinking to how far the parking lot I used when attending Community College was from campus. That got me thinking of the old saw about how my generations parents and grandparents used to lament about having to walk to school uphill, both ways, every day. The mileage and weather conditions through which they walked varied. An image formed in my mind. I am no artist, by hand or with the computer, but I was able to come up with a graphic I think explains this phenomenon our parents and grandparents experienced. Have you ever heard or told this old tale to a youngster? Do you think I've come up with a good visual explanation of the circumstances behind the story?