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

Identify resources staff can use to develop relevant science curriculum

Brian A.

My students love CK-12's Braingenie, and I do too. This is my 2nd year using Braingenie, and I have helped several other teachers become acquainted with it too. I especially love that I can create the goals for my students and then track their progress through the reports.

Denise T.

Provides revision.

Gabriella R.

Thank you for helping me home school.

Anel

Great resource for students and teachers

Dawn R.

I'm a first year teacher in an impoverished school district. Having virtual tools is the best way to close the achievement gap between my district and well-funded schools. Thank you!

Barbara F.

very helpful

Filden

lesson plan for the topic mendel's law of inheritance

Eric C.

It is a extremely propitious and handy website.It helped me a lot for giving a finishing touch for my examination.

Bhawesh K.

I love to use ck12 on and off campus. and i love all the free resources

Cooper L.

Excellent resource for students struggling with homework.

Flor

Wonderful simulations to enhance student understanding AND they work on the student iPads!

Chauncey H.

I love the webinars; they helped me get my classes set up in ck-12 and helped me create my own textbook. Although I publish my own workbook I often assign extra practice for the students on ck-12.

Deb M.

Thanks to CK12.ORG, my students enjoy the assignments and the activities created by ck12. Thank you.

Anna M.

Providing great resources for my homeschooling needs

Jenny

cK-12 helps my students learn Life Science because the lessons are structured in just the right format, with much available in the form of support and resources. Thank you cK12!

Jose A

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

Lydia C.

I use your lessons as homelearning activities

Lianett H.

Comments from Students

In a lot of science, CK12 helped me start off my knowledge in science so I could build off that foundation. It has helped me in many various science subjects, from the EM scale to how rocks are formed. And it isn't ever difficult to understand or condescending and easy. And my grade in science is an A. So thank you, CK12!

Alex D.

i have learned thins i havent learned before

Mason Vonwert

Helped me learn biology

Tahliek

Ck-12 has halped me get better grades in school. It's been a great study tool for me.

Samantha Mcfarlane

They helped me learn about the circulatory system

Galen Spies

It helped me pass my pre-k math class

Elliott

It is cool

Jamesoliver

CK12 HAS BEEN OF TREMENDOUS HELP IN MY SCIENCE CLASSES. SPECIFICALLY, BIOLOGY AND CHEMISTRY. THANKS SO MUCH FOR PROVIDING THE STUDY MATERIALS....KEEP UP THE GOOD WORK!

Adetola

It is has helped me learn a lot more about Science it is So Amazing I love it so much my 7th Grade teacher also uses it a lot.. when we talk about earth science and other things.....

Fatima

It has helped me understand my homework

Quintell Davis

hi there. Thank you for helping me learn.

Halley

you helped me so much thank you

Tkeyuoyt

Thanks or helping with my homework!

Jordan Bakar

I don't understand why it works like this but, it is amazing so I like it but, I think it shouldn't have a login for the students the teachers should only have a login. I love this website it helps me with my learning a lot so, thank you and have a good y

Taniya Henderson

This site has taught me many concepts in math. I want to review so that I will be ready for when I apply for a math position. This site teaches so much more than any other site that I have found.

Patricia Klakamp

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

It help me learn how to turn fractions into decimals

Adriana

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

Israel