Top 13 Web Tools for Classrooms from Ask a Tech Teacher. I liked this because the user also went through how she defined what was a "teachable" tool. It was a nice list of things to use in the classroom or a teaching setting.
Never Work Harder Than Your Students ... Use Technology
Whether you’re learning HTML or you’re a practiced hand and need a refresher, this HTML cheat sheet gives you a quick reference for commonly used tags, what they do, how to use them, and examples of how they wo