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

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

Lorenza B.

I work at a Stem High School - Hudson Valley P-Tech in NY. Our mission is to connect math to the real world for our students. I liked your distance formula lesson and right now I am looking at your amplitude, Freq & period info. Keep up the good work!!

Lorraine N.

with lessons for the 1st grade classroom

Loralei B.

cK-12 has been very helpful in providing short assessments that I use as homework, bell-ringers, and exit- slip activities in Science!!!!!

LJ B.

WOW! I just absolutely can not express so helpful CK-12 has been in my science teaching. We are moving away from our old standards and adopting NGSS. We currently do not have a textbook to use with the students and CK-12 has been a life saver! Thank you!

Lisa N.

I use ck-12 books in my science classes, especially in Advanced Biology. Thanks so much for the awesome resources!!

Lisa J.

I am home schooling my 15 year old son and have been having financial problems. If it were not for this web site, I would be struggling to provide him with proper resources to teach him. Thank you so much!

Lindy S.

homeschool

Lindsay P.

I was asked to teach a high school physics class at a homeschool coop. It's been a great many years since I had physics in college. cK-12 helped me re-learn physics for myself, and it gave me ideas for what to teach. My students and I especially apprec

Linda M.

CK-12 has provided consistent content for math courses that are both adaptable and flexible.

Linda S.

Comments from Students

you helped me so much with my biology witch i'm still using you for thank you

Adrien J.

Younhelped me with my science work for school.

Adriana R.

CK-12 is a fantastic resource website that make learn way much more easier thank you and happy 10th anniversary

Abel

It helped me keep track of my work

Adrian R.

It help me learn how to turn fractions into decimals

Adriana

You helped me a lot with science

Abel

ck-12 has helped me understand chemistry better and i want to congratulate and thank you for your services

Abdullah J.

CK-12 has been incredible in providing me with information for my biology projects.

Abdullah A.

In a word, it helped me learn more about Chemistry.

Abdul B

they helped me learn 7th grade

Aaron