I carry a personal digital assistant (PDA), which my wife occasionally refers to as my "memory." On it are found my contact list and my calendar. When a potential client asks me if I have a date available, this is where I look. When I need to write a letter or make a call, it is where I find the info I need. But of all the functionalities, it is the calendar that is the most valuable. It tells me where I am supposed to be, and when.

Twitter is a Web 2.0 utility that asks the question "What are you up to?" It's a microblogging platform that allows users to share small tidbits about their current activities, locations, plans, and more. I can send out a Twitter update using my cell phone or my blog or by logging into the Twitter Web site.

If your classroom is like most, you probably use every square inch of available space. I love to step into learning spaces that feel like museums of living history. Ceilings, walls, and tables are covered with artifacts showing evidence of student understanding. Many teachers put up exhibits to reinforce everything from the big ideas of a discipline to classroom-management strategies. But how often do you step back and take a thoughtful look at what's on display?

Like many of you, I grew up with a one-size-fits-all approach to school. I remember clearly the few teachers that allowed me to explore things on my own terms -- and, interestingly enough, these were the school experiences that had the greatest impact on me.