Common Core Standards (Mastery Connect) - View the Common Core State Standards in one convenient app. This app is a reference for students, parents, and teachers to easily read and understand the core standards. Quickly find standards by subject, grade, and subject category (domain/cluster). This app includes Math standards K-12 and Language Arts standards K-12. Math standards include both traditional and integrated pathways (as outlined in Appendix A of the common core) and synthesizes Language Arts standards with the Corresponding College and Career Readiness Standards (CCR's).
Khan Academy - Khan Academy has finally released an app for iOS, specifically for the iPad that allows you to watch any of their 2,700+ academic videos for FREE. This app includes downloadable videos: take individual videos or entire playlists to watch offline at your own pace. Use the provided subtitles: follow along, skip ahead, or go back by navigating through subtitles. Track your progress: Log in with your Khan Academy user account to get credit for watching videos, and see your achievements.
Socrative Teacher - Socrative is a smart student response system that empowers teachers to engage their classrooms through a series of educational exercises and games via smartphones, laptops, and tablets. This app replaces more conventional "clickers" that were popular in recent years.