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
Ck 12 is a great way to study for tests!
Gabrielle
CK-12 helps me understand science a lot better than just randomly taking notes. There's pictures and explanations, too, making it easier to understand the text.
Kaitlyn L
Please do not tell anyone my name and Email, I am trusting you with it. CK-12 has helped me so much, I am in 6th grade and were using it for Science, It is so much helpful. Last year we used it for Social Studies and it was confusing but it was helpful. Thank you, CK-12.
Anonymous
Happy anniversary. ck-12 had helped me, although I don't come to the website regularly. But thanks to ck-12. happy anniversary once again, hurray!!!
Ifedunjoledo
CK-12 has helped me in preparing for my science tests, projects, and being a helpful resource for physics and chemistry.
Blade Runner
it has helped me understand the things that i didn't ask my teacher
Nuvia Zavala
you helped me pass algebra 4
Jonny
Math is a universal language one, that we don't fully understand, or I feel being taught properly in schools. Thanks to Ck-12, I am able to bridge the gaps in my knowledge regarding basic math concepts and move on to more advanced topic. Thank you for b
Wensley
CK-12 has helped me understand things more clearly and it is easier to pay attention to because of the videos and other different ways to teach. A textbook is hard to understand because all you see or hear is words there is no video that shows a diagram
Alex U
It helped me help people and help the world! yayy!!!!!
Lam Vo
Ck-12 helped me know about all about the sources of energy.
Alaena R.
CK-12 has helped me with a lot in biology. Happy Birthday CK-12!!!
Israel
it helped me on everything which is awsome!!! Brah!! goz
Abdulsalam
It has helped me through math a lot. Plus it got me a few extra points in my math grade
Toran Daylee Brown
I love to use this website for 7th grade science it helps soooooo much i love this website.
Ian
CK12 has helped me a lot with learning about things that I never knew. This includes about Science.
Takyia Lacy
you teach me to never give up
Lauren
Ck-12 has helped me learn about science
Comments from Educators
ck 12 is the only app which i get that is fully free second thing i m a cbse board student and the books available on ck 12 have material that i cannot get even in best refrences avalaible in my city.............. i prepared foooooor classssss 10 board from i and achieved 10 cgpa
Akhil
ck-12 has helped me immensely regarding my preparation for the tasc ged. Thank you so much for this excellent educational website !
Kevin N.
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.
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.
I first used the CK12.org webpage in conjunction with traditional style biology ibook four years ago after going to a technology training. Now I have open sourced a regular biology Flexboook and an honors Flexbook for use by our entire school and embedded
Chris J.
Providing guided resources for teaching Earth Science. I class that I only recently began teaching was incredibly beneficial
Cassy B.
homeschool
Lindsay P.
i can make my students understand better, thanks
Amruth L.
I am home schooling my 15 year old son and have been having financial problems. If it were not for this web site, I would be struggling to provide him with proper resources to teach him. Thank you so much!
Lindy S.
Wonderful simulations to enhance student understanding AND they work on the student iPads!
Chauncey H.
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.
it helped me a lot. several lessons gave me ideas on how to attack and execute my lessons.
Gigi G.
Incorporate reading into my science classes.
Alexis S.
this website made reading easy to access
Francisco V.
CK-12 is an amazing resource to teach my students! I love that I can collage material and personalize material to suite each of my classes. Thank you for all that you've done and please keep up the great work!
Arpit
I have used the lessons to help my ELL's, for introducing lessons, for tutoring, and for enriching my lessons. Thank you!!!
Fernanda S.
TEACHING CHEMISTRY
Fatih
I am homeschooling my 8th grader for the last trimester. I am looking for things to make his education complete and fun.
Kristy D.