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
it has helped me alot during class. it was better than a book to learn out of.
Serenity W
Ck-12 helped me understand cell structure.
Mattea
nesecito que me ayuden con una tarea de geometria
Yuleni Meisa
It's a great way to learn about science and other subjects. It has great projects and it's probably my favorite thing to do in Science.
Aaron Dickerson
CK-12 has helped me by finding anything that needed for me to succeed in school.
Toma
It has helped me to be able to learn about what we have done in Chemistry, and tests me on what I know.
Dana Mcswain
it helped me in my science class
Ja'Crispy
this has helped me throughout my science grade. SO THANK YOU!!!!!!!
Careena
CK-12 has helped me in mny ways. I use it as a workbook in class, and a study tool at home. THANK YOU CK-12
Rachael Z
It helps me get my science done
Ivory Ray
I am a home schooled student and ck-12 is one of my favorite online resources. I can't wait to see what the next ten years holds for ck-12. Keep up the good work. Thank you.
Kaitlyn
It really helps me get all my glass work done SO THANKS a lot and happy 10 ANNIVERSARY!!!!!!!!!!!!!!!!!!!!!!!!!!!
Dalton A
Helped me learn
Aidan
CK-12 has helped me learn the important facts about things I didin't know. It is a great online source to help out with questions you arent sure about.
Pauline
i am home schooled and ck 12 has really helped me with my studies
Kaitlyn M
It helped me study for my science mid term exam.Thanks to ck12 I have got a full 100 on my science mid-term! Thank you ck12!
Vinnie
I love this thing so much because it helps me to study for my upcoming quizes
Bianca Rivera
It helped me understand the cell theory
Comments from Educators
You folks have done a great job getting the mental pictures of experts into the minds of novices. What a nice body of work!
Gregg S.
it helped me a lot. several lessons gave me ideas on how to attack and execute my lessons.
Gigi G.
I have found CK-12 a helpful resource for enriching my high shcool biology classes.
Beth A.
ck-12 helped me to build my lesson plans.
kaur
Dairy D.
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.
It will help me prepare my students also see where they are in their learning.
Angela
CK-12 has helped me by providing resources to support and reinforce lessons for my middle school students
Elaine H.
I am a newbie here but CK-12 has helped me a lot in teaching my students. Thank you, CK-12!
Helena K.
I love science and the online books are so easy to access! I love the ck-12 website home page thing! every thing is so well organized! I just love ck-12!
Isabella
I learned about CK-12 this year from the previous science teacher in my position at my new school. I have used CK-12 resources for all three of the subjects that I teach and my students just recently told me they would rather use CK-12 than Khan Academy.
Dan M.
CK-12 has helped liberate my classes from a traditional textbook. Now my students can read the content they need at their own level.
Donald K.
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
very good after all it is a helpful site to use.
Arianna 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.
CK12 is a fantastic FREE resource that is comprehensive and engaging. I want my students to learn to look up information and use Internet resources and CK12 provides the opportunity for them to look things up without my help. The readings are clear and I
Jan
Provide great resources for teaching my scholars Algebra
Akinade S.
CK-12 helped me by allowing me to access supplemental science curriculum for my students. It assisted me in the differentiation of instruction for my student body.
Anne B.