Doing course evaluations around the midterm is not required, but many faculty find it very useful to assess student learning and make tweaks during the semester than can improve the course for both instructor and students. These take many forms, including the simple “take out a piece of paper …” or “post anonymously in this Padlet.”
You can also find a few simple digital templates by logging into Microsoft Forms (just click the “duplicate it” button, make any changes you’d like & share the link with your students):