Testimonials

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

Why Teachers Love CK-12 FlexBooks®
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Why Teachers Love CK-12 FlexBooks®
Translate FlexBooks® with just One Click!
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Translate FlexBooks® with just One Click!
Save Money and Own Your Standards with CK-12
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Save Money and Own Your Standards with CK-12
It's "Very Easy" to Create CK-12 FlexBooks®
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It's "Very Easy" to Create CK-12 FlexBooks®
Many Reasons to Use CK-12 FlexBooks®
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Many Reasons to Use CK-12 FlexBooks®
CK-12 Made My Job Easier!
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CK-12 Made My Job Easier!
CK-12 PLIX Makes it Very Easy for Teachers With Very Little Prep Time
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CK-12 PLIX Makes it Very Easy for Teachers With Very Little Prep Time
Using CK-12 PLIX and Interactives Creates More Participation in the Classroom
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Using CK-12 PLIX and Interactives Creates More Participation in the Classroom
CK-12's Key Role in the #GoOpen Movement
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CK-12's Key Role in the #GoOpen Movement
CK-12 Groups: A Great Experience for Students and Parents
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CK-12 Groups: A Great Experience for Students and Parents
Talk to the Text with CK-12's Highlighting Tool
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Talk to the Text with CK-12's Highlighting Tool
Upgrade, Update, and Customize with CK-12
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Upgrade, Update, and Customize with CK-12

Comments from Educators

You have flex books which have been a great tool for my students to read and watch videoclips on Ecology. I look forward to using your flex books on Evolution.

Janet G.

Thanks for all the content assistance!

Eve S.

I love the helpful video links within the textbook and the integrated practice problems for the students

Cathy C.

With our "bring your own device" initiative, our corporation no longer buys textbooks. Thank you for giving me a way to still provide my students a way to have a good information source they can continually turn to.

Laura

Making connections between real-life concepts and applications with students!

Cottey G.

It has helped me find resources for my students

Carema M.

our lessons make my job so much easier. I can count on quality lessons from you and can use them to meet student accommodations. Thank you.

Chris E.

kK-12 have helped me to find many activities and links to use in my class

Consuelo S.

The CK flexbook has allowed our science department to have an up to date resource for most of our science classes. We have not had hardcopy text books for over 20 years.

Jim L.

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

Louise P.

I love cK12! I have used it in my high school science classes for 4 years now. I love how well the readings coordinate with the interactives and I love how I can integrate it into my Edmodo class pages as well. I REALLY love how I can find the same topic at different reading levels and in Spanish so that I can make sure every one of my students can learn science content and themes at any skill level.

Katie

It has helped me with very fun and creative activities to deliver meaningful lesson to students of different learning abilities.

Isela

Hello ck-12, congratulations on your 10th anniversary! This is my first time on the site so i can't really give you a good feedback yet , but rest assured i am thankful for being able to find the site.

Jasper P.

Very good resources and excellent lessons.

Erington

Thank you for providing such a comprehensive and high quality library of resources! I love the customizable textbooks. Thank you!

Kate

CK-12 has not only been a great resource for my students, but it helped me land my first job out of college! I used a CK-12-created NearPod presentation in a lesson I taught to a panel of interviewers in my final round. Thank you for the great work!

Alexis M.

The plix and other resources have been very helpful in allowing me to address different types of learners.

James S.

Weekly quizzes and online practice. Also use the flexbook for practice for HW.

Berenice

Comments from Students

you helped me with science grade

Faith

you helped me pass algebra 4

Jonny

This site helped me that I am passing all my grades and I appreciate all the help.

Matthew Abadam

You helped me look and learn about minerals and many more things. HAPPY ANNIVERSARY!

Candace

Thanks!!!!!!!!!!!

Yoselin Huequis-Ayala

I am a student, currently getting my Masters in Special Education and I have found that the resources available at ck-12 have inspired me and stimulated a fresh approach to teaching and learning, particularly for kids with special needs and for kids needing enrichment resources.

Patty Adams

it helped me understand physics more.

Jamessantana

well it help me to do my cornel notes and to get the work i need

Abdiel

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

Alan Mao

My school curriculum is onilne, and they direct me to you guys for science, and it's actully fun to learn science now!

Maeryn

You helped me by learning how atoms are and how small they are. It's crazy on how small they really are.

Falynn Peterson

CK-12 Helped me better understand things that were spoken in-class.

Zach

CK-12 Provides excellent learning tools and essentials and allows me to access it online for free.

Sean Finn

Hello!!!

Venku

OMG!! cK-12 has helped me with sooo many assignments at school!! When my teacher assigns me a page from this website, it helps me with things I don't know, and when I take a quiz afterwards, I get a great grade!! Thank you cK-12!! :D

Wolfesess

I love to use this website for 7th grade science it helps soooooo much i love this website.

Ian

y'all helped me learn about minerals.

Izzy

CK-12 has helped me understand chemistry better and i want to congratulate and thank you for your services

Abdullah Jamal