Integer Skillz, Rock Creek Learning has been helping students in Metro Washington DC for more than a decade with various tools and games that help students learn. Since face-to-face is difficult to replicate, we're taking our tools to iOS! Integer Skillz is a simple game that helps students achieve mastery over adding and subtracting integers quickly. By pushing students to evaluate 16 expressions quickly, it helps sharpen their ability to do mental math. This game is appropriate for learners 8 years old and older.