Testimonials

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

CK-12 Digital FlexBooks® Allow You to Customize Curriculum
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CK-12 Digital FlexBooks® Allow You to Customize Curriculum
Save Hundreds of Pages Unneeded Textbooks with CK-12
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Save Hundreds of Pages Unneeded Textbooks with CK-12
Incorporating Current Events into a CK-12 FlexBook® the Next Day
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Incorporating Current Events into a CK-12 FlexBook® the Next Day
CK-12 Content to Match the Right Level
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CK-12 Content to Match the Right Level
CK-12 Meets and Exceeds Standards Requirements
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CK-12 Meets and Exceeds Standards Requirements
CK-12 FlexBooks® as Primary Resource in Algebra One Class
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CK-12 FlexBooks® as Primary Resource in Algebra One Class
Sharing CK-12 with Google Classroom and More
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Sharing CK-12 with Google Classroom and More
Continue Learning After the Lesson is Over with CK-12
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Continue Learning After the Lesson is Over with CK-12
CK-12 Fuels a Greater Learning Experience
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CK-12 Fuels a Greater Learning Experience
CK-12 Offers Support for All Students and Teachers Worldwide
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CK-12 Offers Support for All Students and Teachers Worldwide
Use CK-12 FlexBooks® to Replace Traditional Textbooks
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Use CK-12 FlexBooks® to Replace Traditional Textbooks
Easily Share Content with other Districts and Teachers with CK-12
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Easily Share Content with other Districts and Teachers with CK-12

Comments from Educators

school

Fatima A.

Assistance with after school program

Farae

sience

Faith A.

Instructional texts for students to learn curriculum standards

F Woodall

Thanks for all the content assistance!

Eve S.

Very good resources and excellent lessons.

Erington

Great resources to support MYP curriculum without textbooks

Erin

It has helped me with the additional resources available. They are very useful.

Emma A.

its helps me get better and learn new resources

Eric S.

I have relied on CK-12 for simulators to help my students understand topics that are not able to be done easily in the classroom and has helped them to learn and also saved the school money!! Thank you and happy anniversary!!

Ericka O.

lesson plan for the topic mendel's law of inheritance

Eric C.

Send Geometry support materials

Emmanuel N.

Access to awesome texts for my students!

Emma

I love using the free resources as a literacy component in my science classroom. Many topics that I teach can be found at Ck-12 and the content is both accurate and engaging!

Emily I.

I began homeschooling and immediately went into panic mode, but after another homeschooling mother recommended this site I was immediately put at ease.

Elizabeth S.

I have used articles on a variety of Science topics with students to enhance their understanding

Ela B.

CK-12 has helped me by providing resources to support and reinforce lessons for my middle school students

Elaine H.

As a teacher it provides a resource for my students they may not have thought about. I look forward to seeing what it has to offer.

Ed

ck-12 is an amazing resource that provides up to date information that I can use to supplement our science textbooks. It also has leveled activities which helps when differentiating instruction. Keep up the great work!

Donna N.

I am a first-year chemistry teacher in an under-funded charter school. Our books are almost 10 years old and our lab doesn't have a complete stock. While searching to remedy some of these challenges, I stumbled upon CK-12 which offers a solution to a semi-outdated text and no online option for students who have grown up in the technology age. Thank you for allowing me to add your site as a resource and have options for useful tools to teach my students. Your site helps to make me a better teacher.

Dr K

Comments from Students

Hi! My name is Madison Soboul but I really like the name Elizebeth so... Anyways back on topic. I think Ck-12 has helped me become a better reader because I want to beat my record and speed. I think you could add a few things though, I think you should put some games where you answer questions to beat other students in your class.

Elizebeth

it helped me in making me advace in my studies and in school

Tae

hello you just helped me with my science project thank you

Raeden

It has helped me in many ways, i don't have to carry any books anymore thanks to you my shoulders don't hurt anymore HAPPY BIRTHDAY CK-12

Abagayle Spears

Ck-12 has helped me learn about science

Aiden Nelson

It is cool

Jamesoliver

CK-12 has helped me learn more science than I originally anticipated. Thank you!

Adam Tatti

thanks CK12 for interactive activities and videos

Ace

This website helped me in every way possible. Will honestly use this

Abby A

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

Nasiera Huff

Awesome content!

Carina Smit

Thank you ck-12 for helping improve my science skills!

Eliza

cK-12 helped me with my class work in science. Thank You

Haleigh J

It has helped me by giving me online textbooks so i dont have to take a bulky textbook that hurts my back home.

Nancy Magana

Hello! I greatly appreciate all that CK-12 has done to help me throughout my time in biology! I look forward to the amazing things that CK-12 will do in the future!

Evan W

School has been rough, and some of these assignments my teachers have assigned me, is also hard, but ck12 is much easier to work with

Victoria

helps practise my skills in maths

Nastia

cK-12 has helped me with various science assignments. Also, Happy Anniversary! :D

Aidan Moore

it has been helpful because you can see lots of new things and i learned so much because of ck12 its kinda now my favortie math app

Abril

cK-12 has been so helpful to me. Thanks to cK, I have learned so many things and expanded on my knowledge. You guys make it easier to understand history and make it actually fun, engaging,and interesting to do school! I love cK-12!

Evelyn Presleyi