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

Well I have not yet explored the site, however I am highly excited about learning this system and seeing how it can be useful for my students.

Leroy J.

lesson planning

Jeannie

CK-12 has helped my chemistry students to understand course concepts better. Students enjoy the interactive tutorials: these online tutorials help to differentiate learning in a more engaging way. I LOVE using CK-12 in my science classes!

Jeff O.

By making me a more competent teacher.

Jayson R.

Great resources, and learning sequences, available to students in school and at home. Thank you for your site it is invaluable

Jeannette M.

Happy Birthday

Jay

happy birthday

Jaun C.

thanks u have helped me a lot ..just add more materials especially on geosciences

Jaspin K.

Absolutely an amazing experience. I love that I can customize the textbooks to include what I believe is relevant in the order that I feel is a good flow. Thank you for saving my district so much money!

Jason W.

Hello ck-12, congratulations on your 10th anniversary! This is my first time on the site so i can't really give you a good feedback yet , but rest assured i am thankful for being able to find the site.

Jasper P.

Comments from Students

science was hard now it is easy thanks

Juan

I liked this website. It helped me a lot with my work

Jozabad S.

It has helped me want to do school every day!

Joy B.

it helped a lot through school learned lots and tons of stuff

Jose S.

Ck-12 Has helped me learn some really interesting new stuff I haven't learned. It helps students learn and also teachers. It provides the information that I look for.

Jose R.

Ck12 has helped me understand math concepts to science genetics and i can't express how much its help me on my education pursuit.

Jose R.

CK-12 has helped me pass chemistry, also hi.

Jose M.

It helped me learn new things i never thought i would have learned before.

Jonathan L.

Happy 10th anniversary! cK-12 has helped me learn so much, from science to social studies, and everywhere in between. Keep up the good work!

Jonathan G.

It's a relatively decent website that I find myself using usually.

John S.