Testimonials
See the opinions of students and educators just like you. Select from the following to learn more.
Why Students Love CK-12!
Take a look at what these students have to say about CK-12!
Wonderfull! like that it’s really to the point and precise. There’s lots of pictures and diagrams that are helpful when you are trying to learn.
My teacher made these textbooks, and it has everything that we need for this specific class.
It’s really accessible so it’s easy for the whole class to get on and we just go!
We use it every day because there’s something new that our teacher wants us to look at!
My CK-12 book is really nice because it has all of the information I need in it. Instead of hunting for all of the words and questions I have, it’s all there right in order
Comments from Students
Helped me understand Chemistry better.
Molly
they have helped with all homework
Mikia W.
I sucked in math and these guys gave me multiple tools to strengthen mymath skills
Mikeyia
Since I joined ck12 I've learned about geography, biology and chemistry easily by having information in easy access
Mikel A.
It was very professional and useful.
Mike R.
You guys have helped me obtain notes and study. You also help to organize the content. Thanks!
Max
The practice problems help me study for tests.
Mauricio
This has helped to realize the simple things about the greenhouse effect
Maurice F.
cK12 helped me and my science class through extensive learning programs and quizzes, and it is very easy to get around inside. It is very helpful to me and my class. I learn a lot here!
Maude W.
It helped me with my vocabulary
Comments from Educators
Love the free online science textbooks
Kate O.
Thank you for providing such a comprehensive and high quality library of resources! I love the customizable textbooks. Thank you!
Kate
CK-12 is a terrific resource. I'm the science chair at an independent school in Los Angeles. We have been moving away from physical texts for a while and CK-12 is the best online alternative in our opinion. Students enjoy the varied learning formats and teachers appreciate the class management options. Happy Birthday CK-12!!!!
Karl F.
CK-12 has been incredible. I've been using it to homeschool my middle-schooler for two years now, and it is unbeatable.
Kasheia
I like to have well rounded lessons and your lessons are easy to use on the iPad.
Karen S.
I have used it with Google classroom. When introducing a unit, I will have students view a video, take notes and follow-up with a discussion of what they learned. Students will complete some practice on the concept.
Karen E.
I teach at-risk troubled students in a Disciplinary Alternative Education Program setting. Most of my Students have gaps in their Mathematical Foundation. CK12.org helps eliminate those gaps. A strong Mathematical foundation is required in many technic
Karen
ck-12 is helping me design my own text book for students. It is great that I can incorporate desmos activities and hands on learning.
Kande W.
Well, im a teacher and a instructor in Mexico, and my students use this pages too much
Julio R.
I just found this website yesterday, and I think that it's awesome! I can't wait to use this all the time in my classroom! Thanks!!
Julie B.