Testimonials

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

Let Your Students Explore with CK-12!
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Let Your Students Explore with CK-12!
Using CK-12 Every Day in Class
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Using CK-12 Every Day in Class
Instantly See CK-12 Content in More Than 90 Languages
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Instantly See CK-12 Content in More Than 90 Languages
Customizing CK-12 with Regional Content
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Customizing CK-12 with Regional Content
Save Money and Own Your Standards with CK-12
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Save Money and Own Your Standards with CK-12
Sharing CK-12 with Google Classroom and More
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Sharing CK-12 with Google Classroom and More
Why Teachers Love CK-12 FlexBooks®
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Why Teachers Love CK-12 FlexBooks®
CK-12's Free, Platform-Agnostic System for Finding and Editing OER Content
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CK-12's Free, Platform-Agnostic System for Finding and Editing OER Content
CK-12's PLIX and Interactives Help Students to Work Together
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CK-12's PLIX and Interactives Help Students to Work Together
CK-12 Made My Job Easier!
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CK-12 Made My Job Easier!
"I Use CK-12 Videos Whenever Possible"
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"I Use CK-12 Videos Whenever Possible"
CK-12 Meets and Exceeds Standards Requirements
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CK-12 Meets and Exceeds Standards Requirements

Comments from Educators

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Felicity

CK-12 has helped my students and I a great deal. First, I would to say my students who use it, love it and have also told me that they have learned how to use to their advantage for their other subjects. Secondly, I love it too. I like that it has great s

Felicia J.

Allow for my students to receive enrichment with the concepts of mathematics.

Fatima P.

school

Fatima

TEACHING CHEMISTRY

Fatih

Assistance with after school program

Farae

It brings new ideas and learning strategies to the table.

Faith W.

sience

Faith

Instructional texts for students to learn curriculum standards

F Woodall

Thanks for all the content assistance!

Eve S.

Comments from Students

Ck-12 has helped me a lot with science so I was wanting to challenge myself with 8th grade level.

Elliote D.

Its a great site!

Ellen

CK-12 has helped me so much in school, whether for the basis of a topic or extra-credit work. Happy Anniversary, and keep up the great work!

Ellie

Helped me pass my classes. Very helpful!

Elishah A.

It boosted me through a lot of math stuff.

Eliott

ck-12 has helped me because everyone time i go on it it helps me learn new and interesting facts.

Elijah J.

it helps with me math

Elijah

CK-12 helped me by improving my grades even though my grades are getting better and better.

Darriyuna

Helped me by watching different videos.

Daniela T.

ck 12 helped me with my learning by giving an explanation and justifying what i'm supposed to know in y grade levels. I'll happy 10th anniversary and thank you :D 5 stars

Darik A.