Preparing ahead of time will make you more alert for familiar information. Sit where you can clearly see and hear your instructor. If you are easily distracted it may help to sit close to the front. Note areas that your instructor emphasizes. Important information is usually written on the board or overhead so be sure to copy all notes.
Teachers also tend to spend more time on important topics.
If something is unclear, ask for clarification or make note to clarify the point after class. Try to link new ideas with past lectures and personal experiences. Question the matedal presented. Taking Notes from Your Textbook Skim through the chapter before you start reading. Having an idea of what the chapter is about will help you avoid taking down unnecessary information.