California Go Math!
"California GO Math! is specifically designed for California teachers and students to ensure success with California Common Core Standards and the Smarter Balanced Assessment. California GO Math! K-6 incorporates mathematical practices in every lesson so students develop the mathematical thinking they need. It features exploration-driven lessons that begin with problem-based situations and build to more abstract problems. It includes resources to personalize instruction for RtI, online assessment, and ongoing data to inform instruction for Intervention, ELD, and challenge."--Publisher's website.