In the 21st century classroom, the power of mobility has begun to play a significant role in the learning experiences of students. The digital devices students use so frequently and unconsciously can be harnessed as powerful tools for learning, creativity, and discovery. As part of the 21st Century Fluency series, a reverse co-publishing arrangement between Corwin and the 21st Century Fluency Project, this high school book shows how both teachers and students can get the most out of these technologies to cultivate 21st Century Fluencies while addressing curricular objectives in a creative, engaging, relevant, real-world environment. The text identifies 40 of the most effective apps for the iPad, iPod Touch, and iPhone for K-12 classrooms; shows how to use them for learning, teaching, and productivity; and provides examples of classroom use.