This free app by MasteryConnect includes both the Math K-12 and Language Arts K-12 standards. Available through Apple, Android, Windows, and Amazon.
Resources for Understanding the Common Core State Standards | Edutopia
The following web resources provides tools with example lesson plans, assessment, curricular tools, and sample student work to help you create your own lessons and activities in alignment with the Common Core.
Achieve the Core
ASCD and CC
PARCC CC Implementation Workbook
Wheatley Portfolio Digital Resources
Click to enlarge Depth of Knowledge (DOK) Levels