Testimonials

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

CK-12 Helps to Address Learning Gaps
X
CK-12 Helps to Address Learning Gaps
CK-12 Offers Material Unavailable By Traditional Publishers
X
CK-12 Offers Material Unavailable By Traditional Publishers
Every time I open CK-12 There Is Something New and Engaging
X
Every time I open CK-12 There Is Something New and Engaging
Start Small or Dive Right In with CK-12
X
Start Small or Dive Right In with CK-12
CK-12 FlexBooks® as Primary Resource in Algebra One Class
X
CK-12 FlexBooks® as Primary Resource in Algebra One Class
Continue Learning After the Lesson is Over with CK-12
X
Continue Learning After the Lesson is Over with CK-12
CK-12's Adaptive Practice Allows You to Identify Where Each Students' Gaps Are
X
CK-12's Adaptive Practice Allows You to Identify Where Each Students' Gaps Are
Confidence in Connecting to Standards with CK-12
X
Confidence in Connecting to Standards with CK-12
Easy to Update and Modernize Content with CK-12
X
Easy to Update and Modernize Content with CK-12
Illustrations Come to Life with CK-12
X
Illustrations Come to Life with CK-12
Easily Share Content with other Districts and Teachers with CK-12
X
Easily Share Content with other Districts and Teachers with CK-12
CK-12 Has Revolutionized How I Teach
X
CK-12 Has Revolutionized How I Teach

Comments from Educators

In the digital age I find have a paper textbook for a dynamic science world limiting and not budget wise. Thank you for making this service available! I find it very useful as a resource in my classroom.

Charles R.

teaching

bryant

Amazing resource! With so many statewide educational budget cuts, it has been extremely difficult to find quality teaching resources. cK-12 has filled that niche quite nicely! I would recommend this valuable site to anyone. Thanks!

Bryan H.

Ck12.org has helped each and every student who has come to our center. I was been a great experience for our students, as well as a enormous help for the teachers! CK12.org has made our learning journey easier and more exciting!!!

Bright Harbor Academy

Identify resources staff can use to develop relevant science curriculum

Brian A.

This is a great "go-to" site for my daughter and I when she is struggling with a new math concept and needs that extra help. Thanks cK-12!!

Brenda S.

helped me learn how to do my math better

Brady

CK12 has helped me assist others by allowing them to be a part of this learning initiative.

Boris A.

I LOVE YOU guys thank u very much i appreciate your efforts for helping students to learn their subjects.

Biswajit

Thankyou thankyou thankyou very much for providing these resources for free. ck-12.org is very great resource for students it is very helpful in schools and out of schools for self study.

Biswajit

Comments from Students

Before I take a dissection test, I take the quizzes on here. Then when I take the test, my partner and I only miss one or two. So thank you for helping me get good grades.

Jessica

CK-12 has helped me understand my lessons better,and I feel myself grow when I use the resources you've provided! Thanks so much! :P

Jazmine B.

Happy 10th Anniversary love this website

Jesse

It helps me in Science Class.

Jazlyn

it has helped me alot with me in physical science

Jawanda E.

Ck 12 helped me find the correct facts for my 6th grade friction science project!!

Javier S.

It has helped me by making me understand more about my classes because it gives good detail and goes into depth about the topic or assignment.

Javier D.

it helped me with my area perimeter

Jamiyah

it helped me understand physics more.

James S.

CK-12 has helped me breeze through geometry in a private school which did not offer the class. The ability to do everything on my own gave my teacher the time he needed to teach his other classes and helped me earn my high school credit for when I advance

James R.