One of my favorite math courses when I was in undergrad was “History of Math.” I thought it was fascinating to see where it all came from and how math was done before we had more modern advancements or with different number systems.
I wanted to bring some of that history into my Algebra class and have often lamented that it doesn’t match up nicely with Global Studies. The students do Geometry in 10th grade, but the Greeks in 9th. They do Algebra in 9th grade, but the Arabs in 10th. So the obvious connections are not really there.
But there are more, I think, such as perhaps having a lesson about Egyptian fractions to improve students fraction skills while they learn about ancient Egypt in global, as well as to introduce the idea of a negative exponent. I couldn’t find my History of Math textbook from when I was in college, as I may have sold it back to the store, so I just bought a new one. I’ll start looking through it over the summer and see what connections and lessons I can make.