Substituting for Worry

I am about to head out to substitute teaching this morning and I’m nervous. I’m sure it will be fine, but it’s surprising the things one worries about when preparing to enter a room of sixth graders for the morning. Will they be settled down and reasonable, like how I dressed, laugh at jokes I make, or care what I have to say? I hope so, especially since I generally have a strong presence, but it is still a worry that I am slowly getting over. We shall see how it goes, but it will definitely be a learning experience no matter what.