Testimonials

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

The Awesome Ability to Update CK-12 FlexBooks®
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The Awesome Ability to Update CK-12 FlexBooks®
Curating CK-12 FlexBooks® for Relevance and Engagement
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Curating CK-12 FlexBooks® for Relevance and Engagement
Using CK-12's Platform to Deliver Instruction on Devices
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Using CK-12's Platform to Deliver Instruction on Devices
Instantly See CK-12 Content in More Than 90 Languages
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Instantly See CK-12 Content in More Than 90 Languages
Using CK-12 in a Large School District
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Using CK-12 in a Large School District
CK-12 Simulations Connect Classroom with Real World Situations
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CK-12 Simulations Connect Classroom with Real World Situations
Student Engagement: Working Independently Using CK-12
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Student Engagement: Working Independently Using CK-12
Parents Love CK-12
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Parents Love CK-12
Personalizing and Blending Learning with CK-12
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Personalizing and Blending Learning with CK-12
CK-12 Is My Go-To Source for Classroom Material
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CK-12 Is My Go-To Source for Classroom Material
Illustrations Come to Life with CK-12
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Illustrations Come to Life with CK-12
CK-12 is User-Friendly and Fits Each School's Style
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CK-12 is User-Friendly and Fits Each School's Style

Comments from Educators

You have flex books which have been a great tool for my students to read and watch videoclips on Ecology. I look forward to using your flex books on Evolution.

Janet G.

Thanks for all the content assistance!

Eve S.

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

Cathy C.

With our "bring your own device" initiative, our corporation no longer buys textbooks. Thank you for giving me a way to still provide my students a way to have a good information source they can continually turn to.

Laura

Making connections between real-life concepts and applications with students!

Cottey G.

It has helped me find resources for my students

Carema M.

our lessons make my job so much easier. I can count on quality lessons from you and can use them to meet student accommodations. Thank you.

Chris E.

kK-12 have helped me to find many activities and links to use in my class

Consuelo S.

The CK flexbook has allowed our science department to have an up to date resource for most of our science classes. We have not had hardcopy text books for over 20 years.

Jim L.

This resource has been invaluable to me. I can use it for remediation and acceleration. Thank you.

Louise P.

I love cK12! I have used it in my high school science classes for 4 years now. I love how well the readings coordinate with the interactives and I love how I can integrate it into my Edmodo class pages as well. I REALLY love how I can find the same topic at different reading levels and in Spanish so that I can make sure every one of my students can learn science content and themes at any skill level.

Katie

It has helped me with very fun and creative activities to deliver meaningful lesson to students of different learning abilities.

Isela

Hello ck-12, congratulations on your 10th anniversary! This is my first time on the site so i can't really give you a good feedback yet , but rest assured i am thankful for being able to find the site.

Jasper P.

Very good resources and excellent lessons.

Erington

Thank you for providing such a comprehensive and high quality library of resources! I love the customizable textbooks. Thank you!

Kate

CK-12 has not only been a great resource for my students, but it helped me land my first job out of college! I used a CK-12-created NearPod presentation in a lesson I taught to a panel of interviewers in my final round. Thank you for the great work!

Alexis M.

The plix and other resources have been very helpful in allowing me to address different types of learners.

James S.

Weekly quizzes and online practice. Also use the flexbook for practice for HW.

Berenice

Comments from Students

Well ck12 has helped me become the student that I am I think.

Blake N

they made me smart and tought me everything I needed to know and they made me a faster type writer that is what they did to make me a better person

Oletha Jones

it has helped in understanding some aspects of biology

Okeke John Joseph

It helps us nurture our innate skills and talents at different fields and subjects as well as it helps us find our profession to take for the college course to take.

Queenie Casquejo

Has provided needed resources and provided us with ideas.

Patricia Aguirre

I use the Science Flex book for school!

Veronika

Understanding topics on Science

Natalie Haycraft

it helped me with my learning in every subject

Nashaylah

it helps me in doing my homeworks and searching for the things that makes me curious

Nur Logan

Helped me get good grades and get better at Biology

Tom

AMAZING FACTS AND MINI LESSON CONGRATES

Billy

Thank you very much for my education.

Careena B

it helped me how i can search anything i wanted to search and it was very easy to do unlike all the other pages i used

Biannca Bryant

I use your site both for practice while working on particular lessons in math and as a form of remediation for those who are not mastering key ideas.

Runco I M

CK12 has made my life easier when my teacher assigns notes because these notes are easy to understand.

Gavin Downey

You have very good content

Patricia

It helped me keep track of my work

Adrian Razo

its dope

James E