Do Students Understand the Material? A New App Helps Teachers Know For Sure [GOOD] - Free and accessible from any computer, including iPads, smartphones, etc. More about this app from Mashable: New App Tells Teachers When Students Are Confused.
10 Apps for Finding Apps [Mashable]
5 Essential Classroom Management Tools for Teachers [Mashable] - A really great list featuring a mix of familiar and not-so-familiar tools.
3 Free iPhone Apps for Creating Your Own Stop-Motion Videos [Mashable] - You should give your students as many tools to create content as possible on tablets and related devices.
5 Free Homework Management Tools for the Digital Student [Mashable]
Obvious side note: If your classroom is full of one-to-one technology, Mashable should be a daily read for you. They cover new apps and uses of tablets, smartphones, social media, etc perhaps better than anybody.