TAs function as classroom teachers, lab or quiz instructors, or instructional assistants, e.g., tutors, paper-graders, project helpers, etc. according to the needs of the Department and the qualifications and experience of the assistant. TAs are expected to work an average of 20 hours per week for the Department. Normally, first or second year TAs serve as quiz section instructors - exam/project helpers in a large lecture course like Calculus, Business Math, General Statistics or Introduction to Computer Science. In the third year, after gaining some teaching experience, an assistant may be assigned his/her own one or two sections of a multi-sectioned lower division course.