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cK-12 Foundation
CK-12 will provide open-source content and technology tools to help
teachers provide learning for students in a global world. Free access
to high-quality, customizable educational content in multiple
modalities suited to multiple student learning styles, levels, resources
and use content acceptance will allow teachers, students and others to
innovate and experiment with new models and modalities of learning.
CK-12 help students and teachers alike by enabling rapid
customization and experimentation of teaching and learning styles.
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What homeschoolers say about cK-12 Foundation
Homeschool families appreciate CK-12 Foundation for offering a wide range of free, digital FlexBooks that cover many subjects with interactive elements and adaptable content. Users often praise the affordability and accessibility of these resources, as well as the ability to customize lessons to fit their child's pace. However, some note that the presentation can be somewhat dry or inconsistent in quality across subjects, and that younger students may require significant parental guidance to navigate the platform effectively. Overall, CK-12 is seen as a valuable supplement, especially for budget-conscious homeschoolers comfortable with digital learning.
Summarized by Learnamic from public homeschool reviews and discussions.
Resources from cK-12 Foundation
CK-12 Earth Science FlexBook
Free, customizable middle and high school earth science textbook covering geology, meteorology, oceanography, and astronomy.
CK-12 Chemistry FlexBook
Free, customizable high school chemistry textbook covering atomic structure, bonding, reactions, stoichiometry, and more.
CK-12 Biology FlexBook
Free, customizable high school biology textbook covering cells, genetics, evolution, ecology, and human biology with interactive quizzes.
CK-12 Physics FlexBook
Free, customizable high school physics textbook covering mechanics, waves, electricity, magnetism, and modern physics.
CK-12 Algebra I FlexBook
Free, customizable Algebra I textbook covering equations, inequalities, functions, graphing, polynomials, and quadratics.
Grade 4 Math | Coin Values | Equations
At ck12.org, we provide students and teachers alike with a variety of math games, problems and more. We are a great resource for anyone wanting to learn. We provide online textbooks, video lessons and practice problems to students for FREE. For four...
Grade 5 Math | Adding Fractions, Decimals & Place Value
At ck12.org, we provide students and teachers alike with a variety of math games, problems and more. We are a great resource for anyone wanting to learn. We provide online textbooks, video lessons and practice problems to students for FREE. For fift...
Grade 1 Elementary Math Games & Problems
At ck12.org, we provide students and teachers alike with a variety of math games, problems and more. We are a great resource for anyone wanting to learn. We provide online textbooks, video lessons and practice problems to students for FREE. For firs...
Grade 3 Math | Factors & Multiplication
At ck12.org, we provide students and teachers alike with a variety of math games, problems and more. We are a great resource for anyone wanting to learn. We provide online textbooks, video lessons and practice problems to students for FREE. For thir...
Grade 2 Math | Squares, Circles, Rectangles, Triangles
At ck12.org, we provide students and teachers alike with a variety of math games, problems and more. We are a great resource for anyone wanting to learn. We provide online textbooks, video lessons and practice problems to students for FREE. For seco...