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
I am a above average student and cK-12 has helped me learn at my own pace. Learning at my own pace has helped me keep up the A's. Another way cK-12 has helped me and lots of others in my grade learn. Is I created a study group called math and I send out assignments whenever I can. I also know that we can learn from each other.
Jordan Dugue'
its helping my grades get better
Jamario
it helped understand how to solve ratios.
Nasia
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
think through science problems
Samantha Ott
I'm usually great with math but I always struggled with division and ck-12 has helped me concur that issue in his enlightened my math life.
Akinle Armand
I struggle at science but with ck-12 resources from my teacher helps me understand difficult concepts. So thanks a lot!
Paula
OMG!! cK-12 has helped me with sooo many assignments at school!! When my teacher assigns me a page from this website, it helps me with things I don't know, and when I take a quiz afterwards, I get a great grade!! Thank you cK-12!! :D
Wolfesess
Its has help in the term of education and academic career
Akinsola Ibrahim Opeyemi
You have helped me in my schooling and I will be getting into PCC because of you guys and I will be attending the early college program only cause
Elijah Mustain
CK-12 helped me with my school work.
Addison
u helped me by new ways i couldn't understand!!
Haley Kay Hergott
It is a good website to understand the concepts of things
Masooma
CK-12 has helped me by letting me learn about science and helping me with my work at school. If I didn't have this web site I never could of learned what I need to learn about the science.
Tam
To better understand nature.
Abraham Bernal
ck-12 helped me with my homework and my project at school
Genice Sverre B. Dagatan
I learned things that my teacher could not help me with.
Kai Haggen
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.
Comments from Educators
Love the free online science textbooks
Kate O.
I have just been assigned to teach 7th and 8th grade Science.
Lynn J.
Thanks to CK12.ORG, my students enjoy the assignments and the activities created by ck12. Thank you.
Anna M.
it provides my science corrculum
Joshua F.
CK-12 has given my kids a great foundation of knowledge in the subject they are studying, while allowing me the opportunity to add additional information and videos if needed.
Denise R.
I began homeschooling and immediately went into panic mode, but after another homeschooling mother recommended this site I was immediately put at ease.
Elizabeth S.
cK-12 has helped me teach my child on several subjects. It is a fantastic resource weather you homeschool or not.
Laura G.
CK-12 helps out on 2 of my subjects and it makes learning easy. And, some of the videos are funny and it makes learning fun too. I love CK-12 because I met some people who work for it and they were so nice. CK-12 is awesome, and I think it should never be
Lillian B.
CK12 was a great resource for my middle school students because they were preloaded on their devices. Our internet connections were spotty at best in my classroom and CK12 provided a stable platform for me to teach and students to learn.
Jennifer
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.
lol idk just joined ttyl
Fredrick W.
very good after all it is a helpful site to use.
Arianna B.
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.
By making me a more competent teacher.
Jayson R.
Hello ck-12, congratulations on your 10th anniversary! This is my first time on the site so i can't really give you a good feedback yet , but rest assured i am thankful for being able to find the site.
Jasper P.
Well, im a teacher and a instructor in Mexico, and my students use this pages too much
Julio R.
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.
Help my students learn in their Science class.
John B.