CK-12 Foundation is designed to support learners across K-12, but our strongest and most comprehensive content is currently focused on middle school and high school STEM subjects. We aims to be a comprehensive source of teaching materials for grades K-12.
CK-12 does offer elementary-level resources, particularly in math and foundational STEM concepts, including:
- Interactive practice and adaptive learning tools
- Elementary math content
- Videos, simulations, and exercises
- Teacher and homeschool support materials
However, K-5 coverage is more limited compared to the extensive resources available for grades 6-12.