The course teaches through computation in Julia, 4 seemingly random submodules that are both mathematical and computational. The course information including the instructors (who are MIT professors Alan Edelman, David Sanders, MIT researcher James Schloss, and Youtube educator Grant Sanderson) is on the title URL. To get a flavor, check out the first lecture (after the introductions and installations lecture) on convolutions here:
https://mitmath.github.io/18S191/Fall20/lecture2/The instructors are all prolific open-source contributors and the course is definitely worth looking at, if you are interested in hands-on computations of cool and useful mathematics. It's also open to everyone!