Testimonials

See the opinions of students and educators just like you. Select from the following to learn more.

CK-12 Helps to Address Learning Gaps
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CK-12 Helps to Address Learning Gaps
CK-12 Offers Resources Students Understand
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CK-12 Offers Resources Students Understand
Embedding Videos in CK-12 to Enhance Student Understanding
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Embedding Videos in CK-12 to Enhance Student Understanding
Easy to Update and Modernize Content with CK-12
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Easy to Update and Modernize Content with CK-12
CK-12 Makes Differentiated Learning Come to Life
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CK-12 Makes Differentiated Learning Come to Life
CK-12 Keeps Your Students Engaged
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CK-12 Keeps Your Students Engaged
CK-12 Offers Material Unavailable By Traditional Publishers
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CK-12 Offers Material Unavailable By Traditional Publishers
CK-12 Meets Every Student's Needs
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CK-12 Meets Every Student's Needs
Confidence in Connecting to Standards with CK-12
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Confidence in Connecting to Standards with CK-12
It's Worth Transitioning from Traditional Textbooks to CK-12 FlexBooks®
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It's Worth Transitioning from Traditional Textbooks to CK-12 FlexBooks®
CK-12 Has Revolutionized How I Teach
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CK-12 Has Revolutionized How I Teach
Using CK-12 Every Day in Class
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Using CK-12 Every Day in Class

Comments from Educators

So fun for students. Used the Natural Selection mouse interactive as a Do Now, so great.

Cheryl

CK-12 has helped me develop lessons that are interactive and present the material in a fun way. THANK YOU!

Holly

gather information

Felicity

when students need home tutoring

Dolores

It has helped me find resources for my students

Carema M.

CK-12 reading selection and real world applications are engaging and informative. I like that the content is aligned to NGSS and that the lexile level and academic language support make the content accessible to challenged learners. The PLIX interactives are graphically -appealing concept reinforcements.

Gina W.

It helped my son so much he is algebra 1 and is passing it very well

Jennifer D.

Making connections between real-life concepts and applications with students!

Cottey G.

CK-12 has helped me positively impact student achievement in my classroom! I have found numerous problems that I have used with my students, discovered ways to improve my instruction, and developed a clearer understanding of how to target my instruction and interventions!

Kurt H.

I am using CK-12 in both my chemistry and physics classes this year which is my 37th year in teaching. When I tell people I use CK12 to make customizable free electronic textbooks, people are very surprised that it is possible.

James P.

I am just starting to use Ck-12, so far it seems like a great resource for homeschooling my daughters.

Margaret B.

I've been working with a student who is preparing to take a nursing exam. It it difficult to find a single website that combines all the subjects on the exam - CK-12 is one of the few and definitely the most comprehensive. The breadth of content on CK-12 is remarkable. The material is almost always of a very high quality. I'm happy to have discovered the site and will continue to incorporate its resources into my future teaching.

John P.

An invaluable resource for learning materials.

Dan P.

In the digital age I find have a paper textbook for a dynamic science world limiting and not budget wise. Thank you for making this service available! I find it very useful as a resource in my classroom.

Charles R.

with my son's science project

Marianne

Ck12 has revolutionized the manner in which I teach. This magnificent educational asset has taken the text book out of the classroom and made learning accessible to students anywhere there is a internet connection

Michael R.

You have helped my teachers by provided a large and reliable source of information for them, as well as a cite that their students can go on and explore. In turn, that helps me.

Alyssa

I'm a first year teacher in an impoverished school district. Having virtual tools is the best way to close the achievement gap between my district and well-funded schools. Thank you!

Barbara F.

Comments from Students

It helps me get my science done

Ivory Ray

hi there. Thank you for helping me learn.

Halley

Helped me pass my classes. Very helpful!

Elishah Arnold

It helped me understand the cell theory

Adrina Stone

I like this. It helps me learn more then I used to know.

Tanaiya Bulloch

Ck12 has helped me push myself to be passionate about chemistry. thank you.

Abby Kilpatrick

In a word, it helped me learn more about Chemistry.

Abdul B

It has helped me so much, I get my work done

Haley G

CK-12 has helped me a lot. My biology teachers occasionally assigns us CK-12 assignments to do. One time she made us do 23 different lessons! The whole point is that CK-12 is an easy way to learn and to have fun while doing it. Also I think that if I could change anything about CK-12 I wouldn't even do a thing.

Quintin Sherrod

thanks i just started to use ck12, but i am proud that its bilingual so ou can get pages translate into french for my french students ,,,merci a vous ck12

Geoffroy

CK12 HAS BEEN OF TREMENDOUS HELP IN MY SCIENCE CLASSES. SPECIFICALLY, BIOLOGY AND CHEMISTRY. THANKS SO MUCH FOR PROVIDING THE STUDY MATERIALS....KEEP UP THE GOOD WORK!

Adetola

It is has helped me learn a lot more about Science it is So Amazing I love it so much my 7th Grade teacher also uses it a lot.. when we talk about earth science and other things.....

Fatima

it made my life easy

Mathunyane Alfred

It let me watch better, more improved videos and i was veryyyyyyyyy, fun during these videos.

Nasiera Huff

my teacher uses it in class

Taniya Keener

I use your site both for practice while working on particular lessons in math and as a form of remediation for those who are not mastering key ideas.

Runco I M

It helped me learn everything in a fun way!!!!! I was also able to understand what they were trying to tell me!

Aime Ramos Delcomte

u help me improve in all my subjects in school

Seth