Terminology for lecturing modes (for CV)
I am a teaching assistant in the US and I do this type of classes. They are called "review sessions", "recitations" or "discussions", depending on the department and the institution. Following professors'  advice, in my academic CV, in my "teaching experience" section, I list each class I have TAed for and I write a short sentence specifying if I only graded assignments or I also held review sessions or designed materials or something else.