Core Concepts app for iPhone and iPad

Core Concepts school edition is built from the Common Core State Standards. Designed for schools, Core Concepts lets multiple students sign into the same iPad and sync their scores to web-based reports. Teachers use the reports to inform instruction. Multimedia lessons teach each concept. A "Study" mode with immediate feedback provides self-paced learning.
Pretest and post tests show progress. Individualized Learning Plans are automatically generated to show students where they are in mastering the concepts they are expected to know in their grade level. This free program allows you to choose and download subjects by grade level to your iPads.