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 has helped us with our homeschooling and letting my daughter move at her own pace.

Leigh

CK-12 really helped me last year teaching 7th grade social studies. The content, which was broken down by standard, helped me and my students get a better understanding of the material.

Layne B.

free books!!!

Lauryn C.

It's easy to create assignments for my students and I love that they don't discriminate the fact that I homeschool my children and use this.I hope in the future they have more english to use.Thank you.

Laurisa N.

I am homeschooling my 8th grader for the last trimester. I am looking for things to make his education complete and fun.

Kristy D.

I use CK12 all the time in my science classes! It is a great summary of all the content, its in one location, and has all the media extras that keep students engaged. They really prefer CK12 to old school textbook assignments. I am teaching a marine scien

Kelli H.

It has helped me with transitioning in a block schedule to incorporate NGSS lesson.

Laurie R.

CK-12 has been a great help daily as I integrate it into my Biology and Environmental Science Classes. My students love it and I can not thank the developers enough for making student & teacher friendly resources

Laurette S.

I have been able to take the real world applications and interesting topics from ck-12 and incorporate them into my science lessons.

Lauren H.

I am a high school biology and chemistry teacher. I assign ck-12 as a resource for students who struggle with concepts. I love the Real Life articles. The students get to understand why science is important. Thank you

Laura S.

My students love the videos and information on this site. I feel that it greatly enhances student learning.

Laura M.

cK-12 has helped me teach my child on several subjects. It is a fantastic resource weather you homeschool or not.

Laura G.

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

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.

I have only recently discovered this wonderful site. I am using it as an actual teaching resource, whereby I use it to flip my class. So students will work through the content at home, regroup in class to discuss topics and issues and then they write the

Kyle

really helpful for my children

Kumudini

CK-12 has helped me positively impact student achievement in my classroom! I have found numerous problems that I have used with my students, discovered ways to improve my instruction, and developed a clearer understanding of how to target my instruction and interventions!

Kurt H.

CK12 works well with our 1-1 ipad program in our middle school. Students carry their work and flex books around in one small device! Yea, for saving their little spinal cords!

Kristin D.

cK12 has helped me immensely with book resources for my students. Now they get to read smaller sections and not be so encumbered with such large science textbooks. The practice is becoming a very valuable tool with my students as well.

Kristin

I am a Science Olympiad coach for Anatomy and Physiology at a middle school. This is our first year as a team, so I have spent hours searching for materials. Your site offers just what we need.

Kippi F.

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