Testimonials

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

CK-12 Simulations Lead to Richer Learning Experiences
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CK-12 Simulations Lead to Richer Learning Experiences
CK-12 Simulations Connect Classroom with Real World Situations
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CK-12 Simulations Connect Classroom with Real World Situations
CK-12's Key Role in the #GoOpen Movement
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CK-12's Key Role in the #GoOpen Movement
With CK-12, Updating Content has Never Been Easier
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With CK-12, Updating Content has Never Been Easier
Why Mrs. P Loves to Use CK-12 in Her Classroom!
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Why Mrs. P Loves to Use CK-12 in Her Classroom!
Create and Collaborate with Fellow Teachers Using CK-12
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Create and Collaborate with Fellow Teachers Using CK-12
Student Engagement: Working Independently Using CK-12
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Student Engagement: Working Independently Using CK-12
Parents Love CK-12
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Parents Love CK-12
CK-12 Has Engaging and Interactive Content
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CK-12 Has Engaging and Interactive Content
CK-12 Content to Match the Right Level
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CK-12 Content to Match the Right Level
CK-12 is User-Friendly and Fits Each School's Style
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CK-12 is User-Friendly and Fits Each School's Style
Pick Up Where You Left Off with CK-12 FlexBooks®
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Pick Up Where You Left Off with CK-12 FlexBooks®

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

Ck-12 has been a real eye opener and has helped me through my high school years

Mark T.

They helped me very well. I hope that all topics will have videos. Thank you so much.

Mark I.

it has made homework fun

Mark B.

ck 12 has helped me looking for the best topic for me to learn all learning areas.

Marjonie B.

It has helped me to better understand the topics we learn in science class.

Kylie J.

it helped me with science

Marius C.

It has made me understand my classes better.

Kyleigh M.

cK-12 has helped me a lot. I have all A's in my classes because of this website and know much more then I did before cK-12. Thank You!!! Happy 10th anniversary.

Kieahna

I understand math problem more when I practice them independently.

Kierra S.

This site has helped me, with my biology, projects, understandment of learning more ways to solve work. Happy anniversary.

Kiara M.