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

CK-12 has helped me by providing resources to support and reinforce lessons for my middle school students

Elaine H.

I have used articles on a variety of Science topics with students to enhance their understanding

Ela B.

As a teacher it provides a resource for my students they may not have thought about. I look forward to seeing what it has to offer.

Ed

wonderful resource for my homeschoolers

Easton

thanks my child is studing in 6th std .i want he knows all babic concept of math and science.thanks

Shobha K.

Ck12 has revolutionized the manner in which I teach. This magnificent educational asset has taken the text book out of the classroom and made learning accessible to students anywhere there is a internet connection

Michael R.

I am a first-year chemistry teacher in an under-funded charter school. Our books are almost 10 years old and our lab doesn't have a complete stock. While searching to remedy some of these challenges, I stumbled upon CK-12 which offers a solution to a semi-outdated text and no online option for students who have grown up in the technology age. Thank you for allowing me to add your site as a resource and have options for useful tools to teach my students. Your site helps to make me a better teacher.

Dr K

ck-12 is an amazing resource that provides up to date information that I can use to supplement our science textbooks. It also has leveled activities which helps when differentiating instruction. Keep up the great work!

Donna M.

ck-12 is an amazing resource that provides up to date information that I can use to supplement our science textbooks. It also has leveled activities which helps when differentiating instruction. Keep up the great work!

Donna M.

Thanks for the science and math content

Donna H.

Comments from Students

CK-12 has helped me by understanding my subjects more and making me smarter than before.

Angel A.

CK-12 has helped me immensely with math, physics, and chemistry throughout these last few years. Thank you CK-12.

Angel

ck-12 helped alot by making me ready for my mid-year exams and pasted them

Ange N.

It helps me to learn other facts that I did not know.

Anfernee D.

Ck helped me by learning about articals that i didn't even know about

Anessa M.

cK-12 is a fun way to learn!

Andrew M.

CK12 has helped me with my science quiz and notes.

Andy M.

Well it has helped me study for many many tests over the years

Andrew F.

Ck-12 is a very cool website it is the best and helped me through a few years :O thank you for helpin' me with my science, and such and many many things ! Love from me ! -Amy

Amy

It's helped me with science a lot.

Amy