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

My class has learned so much from ck 12, its easy, resourceful, and all in one place. Thank you so much!

Alex J.

Provide great resources for teaching my scholars Algebra

Akinade S.

ck 12 is the only app which i get that is fully free second thing i m a cbse board student and the books available on ck 12 have material that i cannot get even in best refrences avalaible in my city.............. i prepared foooooor classssss 10 board from i and achieved 10 cgpa

Akhil

It has helped me in revising basic concepts before teaching a class. I have used visual representations in my classrooms.

Ajmal R.

I enjoyed using cK-12. I is a good website for biology. I recommend it to any teacher or student dealing with biology. It is very easy to use, covers all topics in biology in the utmost simple and fulfilling way.

Ahmed E.

I enjoy reviewing our lessons and adapting them with my text. It gives extra text for my students to review.

Adrienne S.

cK-12 has helped me with supplemental learning for my students in Science 8th grade and HS Chemistry class. It's great since the cK-12 lessons teach the same scientific vocabulary that are in my standards. Thank you for making education free, accessible and easy to accomplish on a smart phone. You are speaking the students' language!

Adam

CK-12 is such a great help for me as a student teacher, it gives me the information that i need to know for my everyday teaching-learning experience. CK-12 is awesome!

Adrian D.

preparing for physics lessons

Adeoye

CK-12 has been a great resource for me! The Fourth grade social studies curriculum was new to me last year, so I used ck-12 as my guide! Thanks CK-12 for your awesome free resources!!

Adrienne K.

Comments from Students

cK-12 HAVE HELPED US BY HAVING GREAT RESOURCES AND LEARNING DIFFERENT WAYS TO TO DO THINGS. thank u for your wonderful time and effort Happy Anniversary

Rosemary F.

cK-12 has helped me whenever I need a question answered there right there to help

Rose H.

Thank you for helping me learn. Your practice and articles has helped me.

Rose

ck12 has helped me a lot with math thanks a lot:3

Ronnie

It helped me in science class

Roger

ck-12 has helped me with my multiplication, division, and Ela.

Roger W.

It helped me with note taking in bio class

Rocco I.

It helped me to improve on my test and other assignments

Rochelle S.

how to know when a triangle is obtuse,right or acute

Roberto M.

Often times I struggled finding answers or a good way to study. I asked my teacher how I could improve my studying skills, and she suggested me cK-12. Amazing website, congratulations.

Roberto C.