Teaching Math in America from the Smithsonian..."Throughout American history, teachers and parents have used objects--from colonial--era slates to modern electronic calculators--to help students master abstract mathematical concepts. These math teaching tools reflect society’s hopes and dreams."
I remember drive-in movies at the Market Street and Tidwell Drive-Ins. Saw many movies on Mondays' buck night--car load to see a double feature for $1.00! Obviously, they hope to make money from the snack bar. Mom had, for a very short time, a 1959 Impala just like the one in the foreground.