CK-12

CK-12: Free Online Learning Platform for K-12 Students

CK-12 is an online platform that provides free K-12 textbooks, videos, exercises, flexbooks, and personalized learning activities across many subjects. It aims to help students and teachers access free, high-quality learning resources.

What is CK-12?

CK-12 is an online platform that provides free K-12 textbooks, videos, exercises, flexbooks, and personalized learning activities across subjects like math, science, humanities, and more. It was started by Neeru Khosla and Murugan Pal in 2007 with the goal of making quality education accessible for all students.

Some key features of CK-12 include:

• Flexbooks - customizable textbooks that teachers can adapt to their curriculum
• Adaptive practice - personalized assignments based on student needs
• Rich simulations and videos
• Progress dashboards for students and teachers
• Available for web, iOS, and Android

CK-12 flexbooks are designed to be highly customizable. Teachers can rearrange, add, or remove content to fit their teaching requirements. The assignments and practice questions can also be adaptive, adjusting the difficulty level based on individual student needs. This allows for personalized and mastery-based learning.

CK-12 covers major high school subjects including algebra, geometry, physics, chemistry, biology, humanities, and more. The materials are mapped to state standards in the U.S. All resources are free to use and remix thanks to generous support from foundations and earned revenue.

CK-12 Features

Official Links