A retrospective look at college math
I recommend the post What I Wish I Had Learned More About in College Mathematics, written by Sabrina Schmidt, a former math undergrad at Vassar who now works as a data manager. My favorite quote:
I wish that I had been introduced earlier and more often to applications, as they would have provided me with a better idea of potential areas of specialization after graduation.
She goes on to mention PageRank (which I usually cover in my numerical computation courses) as an application of linear algebra, and e-commerce as an application of number theory. She also has other STEM courses, statistics, and computer science on her wish list for her former self.