Testimonials

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

Why Teachers Love CK-12 FlexBooks®
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Why Teachers Love CK-12 FlexBooks®
Translate FlexBooks® with just One Click!
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Translate FlexBooks® with just One Click!
Save Money and Own Your Standards with CK-12
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Save Money and Own Your Standards with CK-12
It's "Very Easy" to Create CK-12 FlexBooks®
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It's "Very Easy" to Create CK-12 FlexBooks®
Many Reasons to Use CK-12 FlexBooks®
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Many Reasons to Use CK-12 FlexBooks®
CK-12 Made My Job Easier!
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CK-12 Made My Job Easier!
CK-12 PLIX Makes it Very Easy for Teachers With Very Little Prep Time
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CK-12 PLIX Makes it Very Easy for Teachers With Very Little Prep Time
Using CK-12 PLIX and Interactives Creates More Participation in the Classroom
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Using CK-12 PLIX and Interactives Creates More Participation in the Classroom
CK-12's Key Role in the #GoOpen Movement
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CK-12's Key Role in the #GoOpen Movement
CK-12 Groups: A Great Experience for Students and Parents
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CK-12 Groups: A Great Experience for Students and Parents
Talk to the Text with CK-12's Highlighting Tool
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Talk to the Text with CK-12's Highlighting Tool
Upgrade, Update, and Customize with CK-12
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Upgrade, Update, and Customize with CK-12

Comments from Educators

Ck-12 is amazing. My students love the worksheets!

Joe

i love ck12! i can use it to work with my small asian and african children!

Jimmel

The CK flexbook has allowed our science department to have an up to date resource for most of our science classes. We have not had hardcopy text books for over 20 years.

Jim L.

It has been a great resource to use. I believe it benefits my students more than me, but it is certainly been a useful tool-resource.

Jim K.

CK-12 IS AMAZING! It deepened my child's knowledge and understanding involving geology, health, and much more! Thanks a bunch for always being there for my child when he most needed it.

Jewel

I use it with special education students to find articles at lower reading levels. I also post links to articles on google classroom for students to read to reinforce their learning from class.

Jessica D.

This is my first time at your website. I have demystified mathematics and looking to create and publish projects that enable students to become accountable for sense making to overcome previous barriers to progressive math studies to qualify with problem solving skills for 21st century careers from math-based STEM field curriculums for starting salaries of $60,000.

Jerry R.

GIVES READING ACTIVITIES TO KIDS

Jenny B.

Providing great resources for my homeschooling needs

Jenny

cK-12 is a wonderful resource. I am a middle grades science teacher and have enjoyed this resource on a weekly basis.

Jennifer R.

Congratulations! You have done good work and helped many in their education journey. Interactive practices, instantly graded tests, and outlines and explanations, including videos and PLIXes, have helped me and my math students.

Jennifer T.

Amazing resources for my 5th grade class! Grateful for it!

Jennifer S.

I value cK-12 as a resource. I am a middle school science teacher and use cK-12's website on a weekly basis.

Jennifer W.

Looking for a better way to explain scale drawings and proportions to my special education students

Jennifer L.

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

Jennifer D.

CK12 was a great resource for my middle school students because they were preloaded on their devices. Our internet connections were spotty at best in my classroom and CK12 provided a stable platform for me to teach and students to learn.

Jennifer

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.

lesson planning

Jeannie

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

Comments from Students

I'm usually great with math but I always struggled with division and ck-12 has helped me concur that issue in his enlightened my math life.

Akinle Armand

I am a biology student so it helps me a lot when doing assignment

Ikhmal Syuqkin Bin Ismail

you teach me to never give up

Lauren

They have provided the ability to learn more things in new ways.

Blake Godbold

CK-12 has helped me understand my homework a lot more.

Fafnir

it has helped me alot with math and it is a good way to learn

Aj W

It helped me study for some tests that I got 100 on

Garret

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

CK-12 has helped me with tests, homework, and learning different subjects.

Serenity Guerra

I've only been using this site for roughly a week but in that week I have actually been able to complete and understand my homework and I have a test soon on what I've been studying here and i have no doubt I will get a amazing grade on it. I'm so thankful on the vast number of topics there is as well I shared this site with my friend as well and it definitely helped their grades as well.

Racheal

Got me to understand global warming

Ivan

Thanks for all the help with homework!!!!

Lainey Shio

it has helped me get a better edjucation the teachers are tough sometimes but i think it is better for me

Serena Woodward

It has made me understand science more! Thanks.

Wilber Alexander Flores

It helped me help people and help the world! yayy!!!!!

Lam Vo

CK-12 has helped me with a lot in biology. Happy Birthday CK-12!!!

Israel

I LOVE CK12, always educating me in a fun and easy to understand style

Ola

It has helped me do online geometry.

Patrick

You are very helpful.

Akiya Sharp

It helps me understand and learn things better.

Jacara Miller