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

Ck-12 is amazing. My students love the worksheets!

Joe

i love ck12! i can use it to work with my small asian and african children!

Jimmel

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.

It has been a great resource to use. I believe it benefits my students more than me, but it is certainly been a useful tool-resource.

Jim K.

CK-12 IS AMAZING! It deepened my child's knowledge and understanding involving geology, health, and much more! Thanks a bunch for always being there for my child when he most needed it.

Jewel

I use it with special education students to find articles at lower reading levels. I also post links to articles on google classroom for students to read to reinforce their learning from class.

Jessica D.

This is my first time at your website. I have demystified mathematics and looking to create and publish projects that enable students to become accountable for sense making to overcome previous barriers to progressive math studies to qualify with problem solving skills for 21st century careers from math-based STEM field curriculums for starting salaries of $60,000.

Jerry R.

GIVES READING ACTIVITIES TO KIDS

Jenny B.

Providing great resources for my homeschooling needs

Jenny

cK-12 is a wonderful resource. I am a middle grades science teacher and have enjoyed this resource on a weekly basis.

Jennifer R.

Congratulations! You have done good work and helped many in their education journey. Interactive practices, instantly graded tests, and outlines and explanations, including videos and PLIXes, have helped me and my math students.

Jennifer T.

Amazing resources for my 5th grade class! Grateful for it!

Jennifer S.

I value cK-12 as a resource. I am a middle school science teacher and use cK-12's website on a weekly basis.

Jennifer W.

Looking for a better way to explain scale drawings and proportions to my special education students

Jennifer L.

It helped my son so much he is algebra 1 and is passing it very well

Jennifer D.

CK12 was a great resource for my middle school students because they were preloaded on their devices. Our internet connections were spotty at best in my classroom and CK12 provided a stable platform for me to teach and students to learn.

Jennifer

CK-12 has helped my chemistry students to understand course concepts better. Students enjoy the interactive tutorials: these online tutorials help to differentiate learning in a more engaging way. I LOVE using CK-12 in my science classes!

Jeff O.

lesson planning

Jeannie

Great resources, and learning sequences, available to students in school and at home. Thank you for your site it is invaluable

Jeannette M.

Happy Birthday

Jay

Comments from Students

CK12 is the best online learning source ever.

Mason Ramos

Hi. it works a lot espically in school to help me understand things to help me proceed in life.

Naomi

CK-12 helped me with the water cycle and many other things, too.

Sean

Ck-12 helped me understand cell structure.

Mattea

this has helped me throughout my science grade. SO THANK YOU!!!!!!!

Careena

It helped me with astronomy

Natalia

Thank you for providing your resources in my Chemistry class. I have learned a lot from your texts. I learned about how ionic and ternary compounds bond together.

Tony Maggio

It has helped me through math a lot. Plus it got me a few extra points in my math grade

Toran Daylee Brown

its helped me so much, like sooooooo much, hmu ;0

Bethany Rimmer

i guess its easy to do work on the go now

Halen Willoughby

your videos and lessons helped me a lot. thank you so much . keep up the great work!!!!!!!

Imali

I love it! Thanks sooooo very much! A GREAT alternative resource from the traditional textbook.

Venise Borum

CK-12 has helped me by finding anything that needed for me to succeed in school.

Toma

It is has helped me learn a lot more about Science it is So Amazing I love it so much my 7th Grade teacher also uses it a lot.. when we talk about earth science and other things.....

Fatima

its helped me learn a lot about science. and i didn't know a lot of things i know now today! HAPPY ANNIVERSARY!!!!

Maegan Jones

i didn't know what orbitals were until now thanks you

James

i just started but so far has been great

Mahalia Barnes

it helped me in my science class

Ja'Crispy

it helped me get better at math and helped me raise my math grade from a 45 to a 89

Faruk

Its a great website

Blake