在线课程的形式是什么？
线上 classes follow a regular cadenceâ€”typically a weekly format. students are expected to log in, review any assigned material for the week, take part in answering 上 line discussion questions and completing weekly assignments.
many 上 line courses include video lectures, either live or prerecorded. instructors may also set up live video conference sessions where students can directly ask follow-up questions.