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 keep my students on board with with their math skills by having videos and reading assignments in one place. I love this site as a mathematics instructor.

Judith B.

cK-12 has provided me with material to support my curriculum, and it offers me a variety of activities to support the diverse learners and abilities in my class. Thanks cK-12; you are a teacher's dream come true.

Judith

helped my 2nd grade students practice, good site

Juan G.

it provides my science corrculum

Joshua F.

Our K-12 Science Curriculum is using cK-12 as an online resource tool.

Josh S.

It is a great resource. It provides me alternatives that articulates Language Arts Standard -State & Common Core- in my sciences classes -7th to 12th.

Jose R.

help me with developing lesson plans for ELA or English

Jose

cK-12 helps my students learn Life Science because the lessons are structured in just the right format, with much available in the form of support and resources. Thank you cK12!

Jose

Help my students learn in their Science class.

John A.

CK 12 is a great resource to use both in the classroom and for homework. The links to the Canvas platform are very advantageous to me and cut my grading time in half.

John R.

Comments from Students

Before I take a dissection test, I take the quizzes on here. Then when I take the test, my partner and I only miss one or two. So thank you for helping me get good grades.

Jessica

CK-12 has helped me understand my lessons better,and I feel myself grow when I use the resources you've provided! Thanks so much! :P

Jazmine B.

Happy 10th Anniversary love this website

Jesse

It helps me in Science Class.

Jazlyn

it has helped me alot with me in physical science

Jawanda E.

Ck 12 helped me find the correct facts for my 6th grade friction science project!!

Javier S.

It has helped me by making me understand more about my classes because it gives good detail and goes into depth about the topic or assignment.

Javier D.

it helped me with my area perimeter

Jamiyah

it helped me understand physics more.

James S.

CK-12 has helped me breeze through geometry in a private school which did not offer the class. The ability to do everything on my own gave my teacher the time he needed to teach his other classes and helped me earn my high school credit for when I advance

James R.