DIGITAL

CHALKBOARD

CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide.

Using an open-content, web-based collaborative model termed the "FlexBook," CK-12 intends to pioneer the generation and distribution of high quality educational content that will serve both as core text as well as provide an adaptive environment for learning through the FlexBook Platform™. Learn More

• Standards Correlations
  • Access available correlation reports by state, national, or common core standards for CK-12 FlexBook seed titles.
• California Free Digital Textbooks Initiative
  • Access CK-12 Math and Science high school books reviewed and approved by the California Learning Resources Network