Being able to answer the teacher's questions in class is a sign that you listen carefully. If there is something you don't understand in class, you should raise your hand in time to ask the teacher about the idea of this problem. Keeping close to the teacher in class will help you review after class, while college courses are generally a 50-minute break of 10 minutes, so you should make good use of this 10 minute and think about what you didn't understand in the notes you took last class. Ask the teacher in time, because it is difficult for university teachers to meet each other except after class. Don't accumulate problems. When there is no problem, you can have a short rest and prepare to listen carefully in the next class. If the teacher arranges group tasks in class, then we should actively participate in the discussion, think about the problems left by the teacher, think about the knowledge points that the teacher wants us to understand, and reflect on the typical problems that the teacher said in class after class. The homework assigned by the teacher should be carefully sketched and completed after class.
One more thing, college students should not play with mobile phones in class, which is very distracting. If you take notes slowly, you can take photos with your mobile phone and don't play the rest of the time. These are all what college students should do in class.