What we learned in CS222, Spring 2025 edition

I usually like to make the What we learned exercise the last thing in the semester before the final exam, but this year, I had to move it up a little. I had two seniors come to class today to talk about their experience, and that meant that the remainder of our meeting was just enough time to do this exercise.

In 30 minutes, the students came up with 109 items. I gave each student six stickers, and they voted on the items that were the most important to them. These five rose to the top:

• Test-Driven Development (13 votes)
• Clean Code (11 votes)
• Programming intentionally (6 votes)
• Model-View Separation (5 votes)
• Canvas stupid (5 votes)

The students recognized that many of these top items are categories rather than particulars and so tended to attract more votes, but that's fine with me. The list is still remarkable in two ways. First, the third most important item to this population was programming intentionally. I don't remember this coming up as an outcome of the course before, but it's a fascinating sentiment. It is different from saying "We are using Clean Code" or "We are using Mob Programming." It is a statement of how we even go about making those kinds of choices, which is great. Maybe if I ever pull all my ideas together into a book of programming advice, I'll call it Programming Intentionally.

The other noteworthy thing on the list is the last one. It's the first time I remember a "joke" entry showing up as a top item. Any good class is going to have some funny items on the list, especially once they relax into the exercise of reflecting on the semester. In this case, "Canvas stupid" was my shorthand for a student's much longer comment, which was reflecting on my telling them how the way that Canvas deals with points is stupid, that you cannot deal with small numbers nor large numbers adequately. In my particular case, I believe I was ranting to the class about how I want to normalize scores into the [0,1] range, but how Canvas has hard-coded two decimal places. I even reached out to Canvas support earlier this semester to see if we could enable more somehow, and I was told it was hardcoded into their implementation.