Testimonials

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

Use CK-12 FlexBooks® to Replace Traditional Textbooks
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Use CK-12 FlexBooks® to Replace Traditional Textbooks
Creating Teams to Make CK-12 FlexBooks®
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Creating Teams to Make CK-12 FlexBooks®
Many Reasons to Use CK-12 FlexBooks®
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Many Reasons to Use CK-12 FlexBooks®
Translate FlexBooks® with just One Click!
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Translate FlexBooks® with just One Click!
The Power of CK-12's Highlighting Tool and Word Definitions
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The Power of CK-12's Highlighting Tool and Word Definitions
Finding the Right People to Pilot CK-12 FlexBooks®
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Finding the Right People to Pilot CK-12 FlexBooks®
Curating CK-12 FlexBooks® for Relevance and Engagement
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Curating CK-12 FlexBooks® for Relevance and Engagement
Incorporating Current Events into a CK-12 FlexBook® the Next Day
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Incorporating Current Events into a CK-12 FlexBook® the Next Day
CK-12 is the High Quality Online Resource Teachers and Students Can Trust
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CK-12 is the High Quality Online Resource Teachers and Students Can Trust
Talk to the Text with CK-12's Highlighting Tool
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Talk to the Text with CK-12's Highlighting Tool
El Paso Bought Laptops and Still Saved Money with CK-12!
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El Paso Bought Laptops and Still Saved Money with CK-12!
Upgrade, Update, and Customize with CK-12
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Upgrade, Update, and Customize with CK-12

Comments from Educators

It has helped my students learn and check understanding in biology and biotechnology and really brings great readings and videos together to teach difficult concepts

Giselle G.

it helped me a lot. several lessons gave me ideas on how to attack and execute my lessons.

Gigi G.

it has helped me to attain my bsc

Garvin M.

I'm a new teacher in an under-funded rural school district. I needed something to help me find quality materials for my classes. CK-12 literally saved me my first year. I will always be grateful for ck-12.

Gage O.

Provides revision.

Gabriella R.

ck12 has help me by making me study even harder i am really excited that i am using ck12 and i would give you all a congradulations your 10th anniversary you did work hard for this

Gabriela C.

I'm using CK-12 for the first time to teach ESL Science. The materials seem interesting.

Gabriel L.

I use Ck-12 all the time in my Google classroom. It is appropriate and gives a variety for all abilities. Thank you

Gina R.

money

Freedom D.

lol idk just joined ttyl

Fredrick W.

Comments from Students

This site helps me a lot to learn the concept in easy way by providing the lot of dynamic web page representing the main theme of concepts.

Murali

It has helped me with writing, math, and physical science. I have passed many of my test in school because of this website.

Claude M.

HI! We use this website every day in class and we are writing a 17 paragraph research paper on energy. We are so happy its there!

Margot R.

yall helped me because yall have alot of infermation and i appretionate that so i have been getting good grades on my report and progress report card so thank youu soo much !

Macayla J.

CK-12 has helped me with my 6th grade homework several times! Happy 10th Anniversary!

Logan D.

thank you i now have fun doing homework and activities thank you very much and Happy Anniversary!!!

Kimoni D.

Thank you for helping me out with my science homework! I probably would have failed without you. My science teacher even tells us to always trust CK-12. Congrats on your 10th anniversary!

Jennifer

I use CK-12 for my science, math, and asking questions. Since I am home schooled this website is a great thing for me because it is a boost on my education and for others who are like me. I really like that you can ask questions and answer them as well. Y

Lexi

it helped me by if i did not know something all i had to to was type what i needed t know in and i would learn XD

Jazmyne

Hi ck-12!!! congratulations!! Im one year older then you!! But....... you guys helped me get a A in science class and my teacher was very impress with my work I have. I just started when I first became a 6th grader, and I was pretty mad I had too start a new website. I always had gotten a D in science and I love science, so it hurt me to see I was failing. But I came home that day and my mom told me to do it any way, so I signed up and then BOOM!!! I fell in love with this website!! My teacher always told me that I needed some help with science, so I wold get on ck-12 and asked a helper for some help. My teacher always told me I could study more of a topic to get caught up with the other students, so I would hop on ck-12 and read,study,watch,and write down the topic. Since I started ck-12 I have an A in science,I have honor roll, and help other kids with science too!! So now that I am almost finished, congrats on having your 10th birthday!! Without you guys I dont know were I would be.Happy birthday!!! -Jasmine Whitfield-

Jasmine W.