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

it helps me find fun, well thought out lessons for my students.

Alli

Allow for my students to receive enrichment with the concepts of mathematics.

Fatima P.

I love cK12! I have used it in my high school science classes for 4 years now. I love how well the readings coordinate with the interactives and I love how I can integrate it into my Edmodo class pages as well. I REALLY love how I can find the same topic at different reading levels and in Spanish so that I can make sure every one of my students can learn science content and themes at any skill level.

Katie

We frequently use copies of the content to send with students who are suspended, sick or otherwise unable to attend class. It's saved many headaches when trying to find material for these students.

Kathleen N.

Our K-12 Science Curriculum is using cK-12 as an online resource tool.

Josh S.

I have read your biology books. With the help of ck books I am able to clear doubts of daughter and its helped me a lot. Thank you very much for CK

M.

Thank you so much for your textbooks & question banks! The questions have provided a quick and easy way for me to give developmental assessments! Thanks for all you do, and I can't wait to see what more you have in store for this year!!

David T.

CK-12 has provided resources so that I can be a more effective teacher!!

Lydia C.

I have improved the labs for my online physical science class.

Beth R.

CK-12 provides great mini lessons, which can be used as Bell Ringers or introductions to lessons.

Donna

Great science content! Lots of resources; video, text, quizzes. Love the connectivity to Edmodo. Very helpful!

Christiana D.

cK-12 helped by providing challenging and interesting activities to supplement classroom learning

Lorenza B.

Getting new resources is always a struggle. Our district has really been focusing on technology. New teaching materials hasn't been high on the list. Thanks to CK-12 I have the text resource that I need being used in a way my students enjoy!

Angenette S.

by helping kids who need tutoring at home

Dolores C.

Amazing books for my students at no cost. Thanks!

Aurora

ck-12 helped me to build my lesson plans.

kaur

happy 10th anniversiry.

Margaret

In many instances, available resources are not sufficient to explain a particular problem, so it is a relief to be able to turn to cK-12 for help.

Marion N.

Comments from Students

I am a above average student and cK-12 has helped me learn at my own pace. Learning at my own pace has helped me keep up the A's. Another way cK-12 has helped me and lots of others in my grade learn. Is I created a study group called math and I send out assignments whenever I can. I also know that we can learn from each other.

Jordan Dugue'

its helping my grades get better

Jamario

it helped understand how to solve ratios.

Nasia

It helped me study for my science mid term exam.Thanks to ck12 I have got a full 100 on my science mid-term! Thank you ck12!

Vinnie

think through science problems

Samantha Ott

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 struggle at science but with ck-12 resources from my teacher helps me understand difficult concepts. So thanks a lot!

Paula

OMG!! cK-12 has helped me with sooo many assignments at school!! When my teacher assigns me a page from this website, it helps me with things I don't know, and when I take a quiz afterwards, I get a great grade!! Thank you cK-12!! :D

Wolfesess

Its has help in the term of education and academic career

Akinsola Ibrahim Opeyemi

You have helped me in my schooling and I will be getting into PCC because of you guys and I will be attending the early college program only cause

Elijah Mustain

CK-12 helped me with my school work.

Addison

u helped me by new ways i couldn't understand!!

Haley Kay Hergott

It is a good website to understand the concepts of things

Masooma

CK-12 has helped me by letting me learn about science and helping me with my work at school. If I didn't have this web site I never could of learned what I need to learn about the science.

Tam

To better understand nature.

Abraham Bernal

ck-12 helped me with my homework and my project at school

Genice Sverre B. Dagatan

I learned things that my teacher could not help me with.

Kai Haggen

Thank you for providing your resources in my Chemistry class. I have learned a lot from your texts. I learned about how ionic and ternary compounds bond together.

Tony Maggio