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 Resources Students Understand
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CK-12 Offers Resources Students Understand
Embedding Videos in CK-12 to Enhance Student Understanding
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Embedding Videos in CK-12 to Enhance Student Understanding
Easy to Update and Modernize Content with CK-12
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Easy to Update and Modernize Content with CK-12
CK-12 Makes Differentiated Learning Come to Life
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CK-12 Makes Differentiated Learning Come to Life
CK-12 Keeps Your Students Engaged
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CK-12 Keeps Your Students Engaged
CK-12 Offers Material Unavailable By Traditional Publishers
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CK-12 Offers Material Unavailable By Traditional Publishers
CK-12 Meets Every Student's Needs
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CK-12 Meets Every Student's Needs
Confidence in Connecting to Standards with CK-12
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Confidence in Connecting to Standards with CK-12
It's Worth Transitioning from Traditional Textbooks to CK-12 FlexBooks®
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It's Worth Transitioning from Traditional Textbooks to CK-12 FlexBooks®
CK-12 Has Revolutionized How I Teach
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CK-12 Has Revolutionized How I Teach
Using CK-12 Every Day in Class
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Using CK-12 Every Day in Class

Comments from Educators

Identify resources staff can use to develop relevant science curriculum

Brian A.

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.

Provides revision.

Gabriella R.

Thank you for helping me home school.

Anel

Great resource for students and teachers

Dawn R.

I'm a first year teacher in an impoverished school district. Having virtual tools is the best way to close the achievement gap between my district and well-funded schools. Thank you!

Barbara F.

very helpful

Filden

lesson plan for the topic mendel's law of inheritance

Eric C.

It is a extremely propitious and handy website.It helped me a lot for giving a finishing touch for my examination.

Bhawesh K.

I love to use ck12 on and off campus. and i love all the free resources

Cooper L.

Excellent resource for students struggling with homework.

Flor

Wonderful simulations to enhance student understanding AND they work on the student iPads!

Chauncey H.

I love the webinars; they helped me get my classes set up in ck-12 and helped me create my own textbook. Although I publish my own workbook I often assign extra practice for the students on ck-12.

Deb M.

Thanks to CK12.ORG, my students enjoy the assignments and the activities created by ck12. Thank you.

Anna M.

Providing great resources for my homeschooling needs

Jenny

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 A

CK-12 has provided resources so that I can be a more effective teacher!!

Lydia C.

I use your lessons as homelearning activities

Lianett H.

Comments from Students

This website has helped me to develop a love of knowledge in a fun yet challenging manner.

Mateo

We do a lot of science work on this, and it is very helpful!

Olivia

It has helped me with my math skills so far, thank you!

Ralphel

it helps a lot with science and other things like that

Alanna

You helped me get through high school. Thank You

Verona

It let me watch better, more improved videos and i was veryyyyyyyyy, fun during these videos.

Nasiera Huff

I use this as a secondary program on my online school!!! i do like it alot keep up the work guys

Serenity C

Hello,CK-12! As a non-native English speaker,I have been reading CK-12 textbooks for learning not only STEM but also English. I really appreciate your hard work to provide such a good learning platform for so long. Wish you all happiness,health and prosper

Weilai

Ck-12 has really helped me with understanding science, and in finishing my homework. Thank you Ck-12!!!

Daksh Kohar

CK-12 is a fantastic resource website that make learn way much more easier thank you and happy 10th anniversary

Abel I

It helped me learn everything in a fun way!!!!! I was also able to understand what they were trying to tell me!

Aime Ramos Delcomte

It boosted me through a lot of math stuff.

Eliott

it help my teacher because we use it in her classroom. I guess you guys helped with learning to. So congratulation.

Yvonne

you helped me with math and the periodic table

Dagon Evans

I LOVE CK12, always educating me in a fun and easy to understand style

Ola

CK12 has helped me pass my biology class because my teacher just uses the same questions as the ones on the quizzes

Payton Wilosn

Helped me prepare for my teacher certification math portion.

Tomeka Daugherty

CK-12 helped me because it can give me answers on any assignment to pass Biology class.

James Dinkins