Use this free, simple online tool to list your to do list but allows a simple method for prioritizing that list. Great for students with trouble organizing or with learning disabiliities like ADD
This is a site that hosts video (Up to 5GB for a free teacher account) but lets you decide who can see it and who can add to it. It's a better managed Youtube alternative.
Think of this as an educational Pinterest. You can create a "learning board" where you collect almost ANYTHING from the web you'd like on a topic. People can browse through your boards (or you on theirs) and see embedded video, google docs, forms, other boards. Combines with LOTS of services, Edmodo, Quizlet, Prezi. You can like, comment, share, and track your progress.
This is BETTER than group answering sites like Yahoo answers. It allows students and teachers to create groups, post questions and answers AND allows teachers to "Academically Verify" the answers.
Use your iPad to create a story with animated pre-drawn people and backdrops. You can add emotions and even record voice. There are many options for sharing.
Much like go2meeting, it allows online real time presentation and sharing. The iPad app even allows file sharing. There is a broadcast feature, voice and text chat.