It is inevitable that you will miss some information while in class. If you find yourself questioning the material, raise your hand and request clarification immediately. If you wait too long to ask (or worse, if you do not ask at all), you may be confused for the rest of the lecture, which can negatively impact your example of annotated bibliography learning, and possibly, your grade. Do not forget that your instructors are human and can make mistakes. It is possible that they can explain a concept in a confusing manner or neglect to share certain information. Your teachers expect to receive questions (and welcome them), so they will not negatively view your desire to improve your understanding of the lecture.