Testimonials

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

It's Worth Transitioning from Traditional Textbooks to CK-12 FlexBooks®
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It's Worth Transitioning from Traditional Textbooks to CK-12 FlexBooks®
CK-12 Digital FlexBooks® Allow You to Customize Curriculum
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CK-12 Digital FlexBooks® Allow You to Customize Curriculum
CK-12 Helps Student Go Deeper with Learning
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CK-12 Helps Student Go Deeper with Learning
CK-12's Flexibility and Accessibility
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CK-12's Flexibility and Accessibility
The Impact of CK-12 Simulations is Huge
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The Impact of CK-12 Simulations is Huge
CK-12's Mission Drove EPISD to Share Materials with Others
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CK-12's Mission Drove EPISD to Share Materials with Others
The Innovation of CK-12
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The Innovation of CK-12
It's "Very Easy" to Create CK-12 FlexBooks®
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It's "Very Easy" to Create CK-12 FlexBooks®
CK-12 Keeps Lesson Planning Process On-Track
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CK-12 Keeps Lesson Planning Process On-Track
CK-12 Makes Differentiated Learning Come to Life
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CK-12 Makes Differentiated Learning Come to Life
Using CK-12's Platform to Deliver Instruction on Devices
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Using CK-12's Platform to Deliver Instruction on Devices
Personalized Learning with CK-12
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Personalized Learning with CK-12

Comments from Educators

Me ha ayudado a planear clases más interesantes para mis estudiantes.

Danelly M.

An invaluable resource for learning materials.

Dan P.

I learned about CK-12 this year from the previous science teacher in my position at my new school. I have used CK-12 resources for all three of the subjects that I teach and my students just recently told me they would rather use CK-12 than Khan Academy.

Dan M.

ck12 is outstanding with providing information, testing material and questions for students to improve their learning in biology. thank you

Cyril F.

CK-12 is an amazing site to use to help students understand topics better, and it has helped me through my earth space honors class. Thanks so much!

Dalila Z.
Dairy D.

Love the ability to customize lessons!

dabourd

This cite allows me to provide practice for my students that isn't always just another worksheet. We all like the immediate feedback that this site provides.

Daire M.

I use ck-12 in my classroom. The school does not provide textbooks for the students, so I use the textbooks from ck-12.org for all of my classes except for AP Physics.

Cynthia B.

There have been available lessons that have helped my students have a better understanding of the material.

D. Ferrell

Comments from Students

CK-12 has helped and has useful information on things

James M.

you made me learn

James J.

You helped in ways

James H.

you helped me learn things from a different angle. Today i am much better at math than i was one year ago. Thank you for helping me CK-12

Jaiden

cK-12 helps me understand science. Thanks :D

Jaelyn

ck12 helped me with my math and science

Jaedon

it has helped me understand the complexity of science and break it down for me to comprehend it a whole lot better.

Ivorie S.

Ck12 helped me in learn more about history, it also helped me in my reading and practice with the English. Thank you Ck12.

Ivanna N.

It helped me learn a lot, helped during my biology classes

Ivan R.

super helpful and easy to use

Ivana