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

Thanks U very much for building up this wonderful platform for children who need help. I am devoting in a volunteer program and their children like CK very much!

Yesmine

Helped me get to 7th grade

Yesenia

tremendously helped my students to understand science concepts, and motivated to do homework

Yolanda

You made me get a 75 on a test

Im Mad

CK-12 has given me all the resources and information I need to succeed in my class; and excel in my learning!

Hailey Gough

Ck-12 has helped me a lot with science so I was wanting to challenge myself with 8th grade level.

Elliote Dinovo

You are awesome. Thank you.

Elizabeth Aguilar

cK12 helped me with biology and some other subjects. Keep up the good work. Happy 10 anniversary!!! I am going to keep on using this site for so much more.

Haleigh Dobson

i can now tell the difference between smooth,striated and cardiac muscles

Takalani

CK-12 helped me in very very many diverse ways!

Victoria Kim

CK-12 helped me with science

Sawyer

Helped me in social studies.

Paul Trumpore

Ck12 has helped me push myself to be passionate about chemistry. thank you.

Abby Kilpatrick

Breaking down material into digestible bites.

Tanika Reiss

It was AMAZING at helping me do my homework.

Aj E

CK-12 has helped me understand biology.

Kahrie Stegman

School has been rough, and some of these assignments my teachers have assigned me, is also hard, but ck12 is much easier to work with

Victoria

It has helped me find out more about molecules and cells along with animals and plants in my class and helped me to pass my tests and study.

Zoie