Virtual Nerd Mobile Math is a free math app that provides on-the-go access to a video library of more than 1,500 high quality math tutorials. Available on the App Store, this app’s interactive tutorials, aligned to the Common Core and other rigorous standards, review fundamental math concepts for middle and high school students. Students, teachers and parents can tap into math refreshers on their iPhone, iPad or iPod Touch. Organized by topic and standard, the app makes it easy to navigate and find the video on the concept a student needs to practice. On-screen instructors provide clear and approachable explanations; students and teachers can mark “favorite” videos so that they can instantly return to them in the future. In addition, schools using a lot of Pearson’s Common Core math programs including ‘digits’ — can search the app by the program’s table of contents. Requires iOS 6.0 or later; compatible with iPhone, iPad and iPod Touch. Have a look.