CK-12: Overview of Resources

CK-12 has free resources for students, parents, teachers, schools, and districts. Take a closer look at everything CK-12 offers.

FlexBook® 2.0 Platform

CK-12’s FlexBook® 2.0 Platform offers interactive, integrated, and insightful functionality enabling a student’s personalized journey.

The CK-12 FlexBook® Platform:

  • Interactive lessons with PLIX and Simulations, inline questions, and videos
  • Adaptive Practice for each lesson
  • Curated related modalities
  • Teacher Insights on student performance
  • Fully customizable
  • Works with ANY device: smartphone, Chromebook, tablet, laptop, or desktop


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