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

CK-12 helps out on 2 of my subjects and it makes learning easy. And, some of the videos are funny and it makes learning fun too. I love CK-12 because I met some people who work for it and they were so nice. CK-12 is awesome, and I think it should never be

Lillian B.

I use your lessons as homelearning activities

Lianett H.

My school district went full implementation with the new NGSS standards, but did not provide us with any curriculum. CK-12 saved the day!! Thank you CK-12!!!

Leslie F.

I am a school admin. and I am interested in learning more about Flex books.

Leslie

CK-12 has helped us with our homeschooling and letting my daughter move at her own pace.

Leigh

free books!!!

Lauryn C.

CK-12 really helped me last year teaching 7th grade social studies. The content, which was broken down by standard, helped me and my students get a better understanding of the material.

Layne B.

It's easy to create assignments for my students and I love that they don't discriminate the fact that I homeschool my children and use this.I hope in the future they have more english to use.Thank you.

Laurisa N.

It has helped me with transitioning in a block schedule to incorporate NGSS lesson.

Laurie R.

CK-12 has been a great help daily as I integrate it into my Biology and Environmental Science Classes. My students love it and I can not thank the developers enough for making student & teacher friendly resources

Laurette S.

Comments from Students

Before I take a dissection test, I take the quizzes on here. Then when I take the test, my partner and I only miss one or two. So thank you for helping me get good grades.

Jessica

CK-12 has helped me understand my lessons better,and I feel myself grow when I use the resources you've provided! Thanks so much! :P

Jazmine B.

Happy 10th Anniversary love this website

Jesse

It helps me in Science Class.

Jazlyn

it has helped me alot with me in physical science

Jawanda E.

Ck 12 helped me find the correct facts for my 6th grade friction science project!!

Javier S.

It has helped me by making me understand more about my classes because it gives good detail and goes into depth about the topic or assignment.

Javier D.

it helped me with my area perimeter

Jamiyah

it helped me understand physics more.

James S.

CK-12 has helped me breeze through geometry in a private school which did not offer the class. The ability to do everything on my own gave my teacher the time he needed to teach his other classes and helped me earn my high school credit for when I advance

James R.