An adjunct professor recently confessed that, even after multiple semesters of teaching, he still feels "green". And if we're to listen to Kermit the Frog, we might agree it's not easy being green.
An instructor often feels the need to be the sage on the stage. But when the world's information is a few thumb taps away in all of our pockets, the nature of teaching shifts from providing information to fostering our students' ability to gather, prioritize, process, and apply course information in the many ways of the new, media-rich world.
So, it's not easy, but it's important to stay a little green. That's what learning looks like.