Instagram is a free mobile app that allows users to take and share short video and photo clips. It promotes collaboration by linking posts to Facebook and Twitter, and also allows direct messaging between followers. This allows for effective discussion and sharing of work in progress. Instagram would be useful in classrooms for student portfolios and collaboration on group projects. Parents could see and engage with their child's work by viewing the school's Instagram account. The app is easy to use - you can sign up, follow friends, like and comment on posts, and send private messages with photos and videos.