More to explore:
Great list of things teachers should do (or at least, think about!)
100 Day Ideas!
100's day activities
"when I'm 100 years old"... love this idea for 100 days of school!
To end class
Tools to help you level your classroom library
the organized classroom!
I love the idea of random rewards of things they can do rather than "things" for rewards
Minute-to-win-it Games, Great for beginning of the year or end of the year fun