Read the 【Case Reflection】in this section and try to answer the following questions:

At the end of each term, Ms J collects student feedback on her course. Students often comment that “when we are going to start a new lesson, we always wonder how you will present the new ideas because you always bring something new and unexpected to us. We are always full of anticipation and look forward to your class.”

Why do you think the students in Ms J's class feel in that way? Have you ever had this kind of experience or this kind of feeling before? What may have caused it?