Testimonials

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

The Awesome Ability to Update CK-12 FlexBooks®
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The Awesome Ability to Update CK-12 FlexBooks®
Curating CK-12 FlexBooks® for Relevance and Engagement
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Curating CK-12 FlexBooks® for Relevance and Engagement
Using CK-12's Platform to Deliver Instruction on Devices
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Using CK-12's Platform to Deliver Instruction on Devices
Instantly See CK-12 Content in More Than 90 Languages
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Instantly See CK-12 Content in More Than 90 Languages
Using CK-12 in a Large School District
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Using CK-12 in a Large School District
CK-12 Simulations Connect Classroom with Real World Situations
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CK-12 Simulations Connect Classroom with Real World Situations
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
Personalizing and Blending Learning with CK-12
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Personalizing and Blending Learning with CK-12
CK-12 Is My Go-To Source for Classroom Material
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CK-12 Is My Go-To Source for Classroom Material
Illustrations Come to Life with CK-12
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Illustrations Come to Life with CK-12
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

Comments from Educators

school

Fatima A.

Assistance with after school program

Farae

sience

Faith A.

Instructional texts for students to learn curriculum standards

F Woodall

Thanks for all the content assistance!

Eve S.

Very good resources and excellent lessons.

Erington

Great resources to support MYP curriculum without textbooks

Erin

It has helped me with the additional resources available. They are very useful.

Emma A.

its helps me get better and learn new resources

Eric S.

I have relied on CK-12 for simulators to help my students understand topics that are not able to be done easily in the classroom and has helped them to learn and also saved the school money!! Thank you and happy anniversary!!

Ericka O.

lesson plan for the topic mendel's law of inheritance

Eric C.

Send Geometry support materials

Emmanuel N.

Access to awesome texts for my students!

Emma

I love using the free resources as a literacy component in my science classroom. Many topics that I teach can be found at Ck-12 and the content is both accurate and engaging!

Emily I.

I began homeschooling and immediately went into panic mode, but after another homeschooling mother recommended this site I was immediately put at ease.

Elizabeth S.

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

Ela B.

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

Elaine H.

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

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 N.

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

Comments from Students

CK-12 has been incredible in providing me with information for my biology projects.

Abdullah Alikhan

It helped me with my math and science i got an A+ on my semester exam

Iysis

It help me learn how to turn fractions into decimals

Adriana

just found this random website because i was searching for places with convergent oceanic-oceanic plate boundaries

William

CK-12 has helped me with my homework and things i did not understand. Thankyou

Dajah

Always help me do my lessons with articles about the topic im learning about. Thanks for taking your time and making it all free.

Peter

It boosted me through a lot of math stuff.

Eliott

It has me very much from helping me with science class to improving my knowledge on science and chemistry. I thank who ever has invented this wonderful site and congratulate you on the 10 years you have had this site.

Kaitlyn Davidson

Math is a universal language one, that we don't fully understand, or I feel being taught properly in schools. Thanks to Ck-12, I am able to bridge the gaps in my knowledge regarding basic math concepts and move on to more advanced topic. Thank you for b

Wensley

When I have problems in science, cK-12 is there to help.

Alan Mao

Has provided needed resources and provided us with ideas.

Patricia Aguirre

I have been having problem with solving my algerbra problems

Tracy Robinson

I have been learning a lot from ck-12!!!!!

Veer Sanghavi

Learning Algebra

Elizabeth

ck-12 has helped me prepare for my return to college.

Tony Thompson

Learning new information.

Candice Sabrya Medley

This site has helped me learn about new and different things that I hadn't known before! So, thank you!

Maeve

its dope

James E

You have helped me become a better student.

Kaitlyn D

Helped me get good grades and get better at Biology

Tom