| Website | ck12.org |
| @ck12flexbooks | |
| Category | Education |
| Employees |
CK-12 Foundation is a non-profit organization with the mission to produce free and open source K-12 materials aligned to state curriculum standards and customized to meet student and teacher needs. CK-12 currently provides free STEM content for middle and high school. Offerings include FlexBooks® digital textbooks, a SAT prep site, and an interactive Algebra 1 curriculum. CK-12 is in the process of providing a next generation system for learner focused features like guided learning, analytics and feedback for students.
