Testimonials

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

Worry-Free Content Curation with CK-12
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Worry-Free Content Curation with CK-12
CK-12 Offers Material Unavailable By Traditional Publishers
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CK-12 Offers Material Unavailable By Traditional Publishers
Starting with a CK-12 FlexBook® and Curating as You Go
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Starting with a CK-12 FlexBook® and Curating as You Go
Students Rely on CK-12 Flexbooks®
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Students Rely on CK-12 Flexbooks®
Worry-Free Content Curation with CK-12
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Worry-Free Content Curation with CK-12
It's Easy for Students to Search CK-12 FlexBooks®
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It's Easy for Students to Search CK-12 FlexBooks®
Embedding Videos in CK-12 to Enhance Student Understanding
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Embedding Videos in CK-12 to Enhance Student Understanding
Updating FlexBook® for Personalized Learning
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Updating FlexBook® for Personalized Learning
OER Publishing and Sharing on CK-12
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OER Publishing and Sharing on CK-12
The Awesome Ability to Update CK-12 FlexBooks®
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The Awesome Ability to Update CK-12 FlexBooks®
CK-12's FlexBooks® are Easy To Use
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CK-12's FlexBooks® are Easy To Use
Using CK-12 in a Large School District
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Using CK-12 in a Large School District

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

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.

Thanks for providing free, high quality resources for kids and teachers! I love the flexible way that resources can be built.

Mark H.

I love the concise way that the open resource materials cut to the chase. I can focus more clearly using these materials.Thanks for creating them.

Mark C.

with my son's science project

Marianne

Integrate wonderful lessons that engage my students in middle school education

Marian R.

It has helped to develop engaging lesson plans

Maria L.

I use it for Credit Recovery Program. My students like it!

Maria

happy 10th anniversiry.

Margaret

Thanks so much for your resources. They have helped me in my Earth Science and Biology classes. I am a special education teacher who uses your article and other resources to help my class. Congratulations on celebrating 10 years!

Marguerite T.

I am just starting to use Ck-12, so far it seems like a great resource for homeschooling my daughters.

Margaret B.