Testimonials

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

CK-12 Helps to Address Learning Gaps
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CK-12 Helps to Address Learning Gaps
CK-12 Offers Material Unavailable By Traditional Publishers
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CK-12 Offers Material Unavailable By Traditional Publishers
Every time I open CK-12 There Is Something New and Engaging
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Every time I open CK-12 There Is Something New and Engaging
Start Small or Dive Right In with CK-12
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Start Small or Dive Right In with CK-12
CK-12 FlexBooks® as Primary Resource in Algebra One Class
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CK-12 FlexBooks® as Primary Resource in Algebra One Class
Continue Learning After the Lesson is Over with CK-12
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Continue Learning After the Lesson is Over with CK-12
CK-12's Adaptive Practice Allows You to Identify Where Each Students' Gaps Are
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CK-12's Adaptive Practice Allows You to Identify Where Each Students' Gaps Are
Confidence in Connecting to Standards with CK-12
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Confidence in Connecting to Standards with CK-12
Easy to Update and Modernize Content with CK-12
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Easy to Update and Modernize Content with CK-12
Illustrations Come to Life with CK-12
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Illustrations Come to Life with CK-12
Easily Share Content with other Districts and Teachers with CK-12
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Easily Share Content with other Districts and Teachers with CK-12
CK-12 Has Revolutionized How I Teach
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CK-12 Has Revolutionized How I Teach

Comments from Educators

I have been able to use CK12 to allow my homeschooled student to explore and expand on concepts we have studied in greater depth.

Donna

ck12.org has been a great find! Free, quality on-line textbooks that can be customized as desired. PLUS on-line 'instant' quizzes that provide feedback and links to my LMS - a true TREASURE! Congrats on 10 Years!!!

Donna E.

CK-12 provides great mini lessons, which can be used as Bell Ringers or introductions to lessons.

Donna

CK-12 has helped liberate my classes from a traditional textbook. Now my students can read the content they need at their own level.

Donald K.

It is helping us in our Catholic school System in the Diocese of Gbarnga, Liberia- West Africa

Dominic C.

by helping kids who need tutoring at home

Dolores C.

when students need home tutoring

Dolores

My students love CK-12's Braingenie, and I do too. This is my 2nd year using Braingenie, and I have helped several other teachers become acquainted with it too. I especially love that I can create the goals for my students and then track their progress through the reports.

Denise T.

CK-12 has given my kids a great foundation of knowledge in the subject they are studying, while allowing me the opportunity to add additional information and videos if needed.

Denise R.

I would like to have access to the webinar to use some of the 3-5 resources. I liked the tremendous amount of activities I can use with my fourth grade class.

Denise H.

Comments from Students

CK-12 has helped me provide online resources for my special education students to access at home!

Lurleen M.

i have used ck-12 while home educating my children via google apps

Luna F.

CK-12 has been a wonderful resource for my students. I love how there are readings and multi-modal methods of having students explore topics.

Luanne

This resource has been invaluable to me. I can use it for remediation and acceleration. Thank you.

Louise P.

I was able to create worksheet practice for my students.The videos available were also helpful in helping students review concepts

Lotoya G.

This has been an excellent resource for my class room. Our students do not have take home text books since we are a Title 1 school and money is limited. I have used this as a resource for homework and differentiation using your different workbooks. I have also used it as a large group presentation of a topic and then practiced using materials linked. I have also created several "webquest" type activities for use in our computer lab. Thanks for all of the hard work that went into this and I would love to see Social Studies/World/American history as fleshed out as the science is! Loved it!

Lorre C.

I work at a Stem High School - Hudson Valley P-Tech in NY. Our mission is to connect math to the real world for our students. I liked your distance formula lesson and right now I am looking at your amplitude, Freq & period info. Keep up the good work!!

Lorraine N.

cK-12 helped by providing challenging and interesting activities to supplement classroom learning

Lorenza B.

with lessons for the 1st grade classroom

Loralei B.

cK-12 has been very helpful in providing short assessments that I use as homework, bell-ringers, and exit- slip activities in Science!!!!!

LJ B.