Testimonials

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

CK-12 Helps to Address Learning Gaps
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CK-12 Helps to Address Learning Gaps
CK-12 Offers Material Unavailable By Traditional Publishers
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CK-12 Offers Material Unavailable By Traditional Publishers
Every time I open CK-12 There Is Something New and Engaging
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Every time I open CK-12 There Is Something New and Engaging
Start Small or Dive Right In with CK-12
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Start Small or Dive Right In with CK-12
CK-12 FlexBooks® as Primary Resource in Algebra One Class
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CK-12 FlexBooks® as Primary Resource in Algebra One Class
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's Adaptive Practice Allows You to Identify Where Each Students' Gaps Are
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CK-12's Adaptive Practice Allows You to Identify Where Each Students' Gaps Are
Confidence in Connecting to Standards with CK-12
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Confidence in Connecting to Standards with CK-12
Easy to Update and Modernize Content with CK-12
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Easy to Update and Modernize Content with CK-12
Illustrations Come to Life with CK-12
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Illustrations Come to Life with CK-12
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
CK-12 Has Revolutionized How I Teach
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CK-12 Has Revolutionized How I Teach

Comments from Educators

I've been working with a student who is preparing to take a nursing exam. It it difficult to find a single website that combines all the subjects on the exam - CK-12 is one of the few and definitely the most comprehensive. The breadth of content on CK-12 is remarkable. The material is almost always of a very high quality. I'm happy to have discovered the site and will continue to incorporate its resources into my future teaching.

John P.

It is a great multimedia resource that students like to use collaboratively and independently.

John H.

It's a very fun and interactive way to teach and sum up the boring information teachers repeat again and again.

Joe M.

I have used cK-12 to help teach and plan lessons for my students.

John A.

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

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

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.

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.

Comments from Students

CK-12 Helped me study for science tests that were on subject I had trouble with. Thanks CK-12!!!

Keegan

i learned that some things are grose but it was fun at times doing it with my mom and brother o ya the dog to she would hog the couch

Patrick M.

You guys helped me in so many numerous ways with my education even though I am a college student! This website I believe crosses the barrier to be able to teach anyone from any grade level and that says a lot!

Kaylor D.

CK-12 has helped me with Integrated Science!!

Kayley P.

Thank you for being an awesome site! You've helped a lot of people!

Katelyn

CK-12 has helped me be connected to my chemistry class and learn information through examples and pictures when my teacher is not around.

Kat

Hi! I wanted to thank the ck-12 team for helping me throughout my years in both middle and high school. I've been using ck-12 for many years and have to say it's one of the best programs out there! Thank you so much for making ck-12 possible!

Katelin

Ck-12 has helped me to achieve my work and happy anniversery CK-12!

Kat

CK-12 helps me learn about science

Kassie

it helps me learn about energy

Kadajah J.