The Carnegie Cyber Academy website has a great game for promoting digital citizenship in your classroom. Teachers have access to a manual which has lessons and activities that go along with the game.
Looking for an interactive and engaging formative assessment tool for your classroom? Check out GoSoapBox, it's a great tool that lets students take polls, ask questions, take quizzes, and participate in discussions. The teacher has real time access to everything that the students post.
Do you want your students to improve their media literacy skills in a fun and interactive way? Check out Project Noah, it's a great app where students become scientist and explore wildlife in their own backyard!