Testimonials

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

Use CK-12 FlexBooks® to Replace Traditional Textbooks
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Use CK-12 FlexBooks® to Replace Traditional Textbooks
Creating Teams to Make CK-12 FlexBooks®
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Creating Teams to Make CK-12 FlexBooks®
Many Reasons to Use CK-12 FlexBooks®
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Many Reasons to Use CK-12 FlexBooks®
Translate FlexBooks® with just One Click!
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Translate FlexBooks® with just One Click!
The Power of CK-12's Highlighting Tool and Word Definitions
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The Power of CK-12's Highlighting Tool and Word Definitions
Finding the Right People to Pilot CK-12 FlexBooks®
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Finding the Right People to Pilot CK-12 FlexBooks®
Curating CK-12 FlexBooks® for Relevance and Engagement
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Curating CK-12 FlexBooks® for Relevance and Engagement
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 is the High Quality Online Resource Teachers and Students Can Trust
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CK-12 is the High Quality Online Resource Teachers and Students Can Trust
Talk to the Text with CK-12's Highlighting Tool
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Talk to the Text with CK-12's Highlighting Tool
El Paso Bought Laptops and Still Saved Money with CK-12!
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El Paso Bought Laptops and Still Saved Money with CK-12!
Upgrade, Update, and Customize with CK-12
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Upgrade, Update, and Customize with CK-12

Comments from Educators

I have two children. One is 10 and the other 7 and they both are getting better with math as the semesters go by. Thank you for makimg this site free.

Chantely B.

well I am impressed by the high quality of the material, best of all, free to use. Keep up the good work!

Cesar R.

I love the helpful video links within the textbook and the integrated practice problems for the students

Cathy C.

I have used parts and all of many lesson plans. Thanks.

Cathryn B.

Providing guided resources for teaching Earth Science. I class that I only recently began teaching was incredibly beneficial

Cassy B.

It has given my students wonderful lessons!

Carolyn H.

I shared this resource with my students

Carmen M.

It has helped me find resources for my students

Carema M.

Helped me become a better teacher by offering a variety of resources to keep them engaged!

Caitlin C.

CK 12 was useful as I could download the text books for use with me students. Now I cannot do that anymore. Congratulations on your 10'th anniversary, you have gone from useful to useless for me.

C Smith

Comments from Students

You have helped me a lot i really like how you walk us through the problem if we don't get it. HAPPY 10 YEARS !!!!!!!!!!!!!!!!!!!!!!!!!!!

Zoe

CK-12 is some much easier than looking threw a book. It tells you what you need to know. it is an amazing learning tool.

Zach S.

CK12 is really awesome, thank you

Zach D.

CK-12 has provide me with numerous resources ranging from interactive videos to simple reading materials for my teachers and students. These items and your company gives public education some highly important resources.

Willie W.

I'm reviewing mathematics just as a hobby, and CK-12 presents the material logically.

William W.

It's a great learning tool to help me practice! Thank you for this website.

Wasee H.

You have helped me with learning about anatomy and science.

Walter J.

ck-12 has made me be able to complete homework assignments, because of your videos, one suggestion that I have is that the person that talks in the videos, talk alot faster, I always have to watch the videos in x2 speed to not get bored.

Wakeen J.

it helped me immensely

Waheed

CK-12 helped and aided me in my learning journey so much! Thank you so much CK-12, from the bottom of my heart.

Vynateya P.