Testimonials

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

CK-12 Offers Resources Students Understand
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CK-12 Offers Resources Students Understand
CK-12 Groups: A Great Experience for Students and Parents
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CK-12 Groups: A Great Experience for Students and Parents
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
How to Use CK-12 to Support Struggling Readers
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How to Use CK-12 to Support Struggling Readers
Save Hundreds of Pages Unneeded Textbooks with CK-12
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Save Hundreds of Pages Unneeded Textbooks with CK-12
School Districts Adapting to Electronic Textbooks with CK-12
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School Districts Adapting to Electronic Textbooks with CK-12

Comments from Educators

I have two children. One is 10 and the other 7 and they both are getting better with math as the semesters go by. Thank you for makimg this site free.

Chantely B.

well I am impressed by the high quality of the material, best of all, free to use. Keep up the good work!

Cesar R.

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

Cathy C.

I have used parts and all of many lesson plans. Thanks.

Cathryn B.

Providing guided resources for teaching Earth Science. I class that I only recently began teaching was incredibly beneficial

Cassy B.

It has given my students wonderful lessons!

Carolyn H.

I shared this resource with my students

Carmen M.

It has helped me find resources for my students

Carema M.

Helped me become a better teacher by offering a variety of resources to keep them engaged!

Caitlin C.

CK 12 was useful as I could download the text books for use with me students. Now I cannot do that anymore. Congratulations on your 10'th anniversary, you have gone from useful to useless for me.

C Smith

Comments from Students

CK-12 helped me learn in detail each topic that I did on it...It helped me get good grades on tests!

Amritha

Ck-12 helped me understand things better

Amia H.

I passed my geometry exams and tests assessments because I used this! Happy anniversary:

Amonni D.

well it helped me about that assessment we were doing

Amaan M.

It helped me with my work

Alyssa T.

It helped me with my Science class very much.

Aidan

Helped me learn easier.

Ahliyah F

it helped me understand the cell theory

Adrina S.

It helped me do my homework

Aelin G.

it has helped me learn about science

Aedan