CK-12 Update


Say Thanks This Holiday Season!

It’s the season of giving! From all of us here at CK-12: Thank you!
We’re making it super simple for you to thank anyone this season! Simply send them a free eCard to brighten up their day. They deserve it!
Send eCard

Teacher Voice: Ideas For Utilizing FlexBooks® 

Dr. Milton Huling, a Curriculum Specialist, discusses the many different ways teachers are using FlexBooks® in his Florida district of Polk County. Plus, you can take a look at the science books they've created (and customize them if you want!) 

Learn More

Now Choose From More Than 1,000 PLIX!

We’ve been growing our library of PLIX interactives! Now, students can engage and interact with content and manipulate it for deeper learning using PLIX. Use these as warm-ups, review, or practice, in your class everyday.

Browse Interactives

New And Improved Apps!

Students can now do their homework directly from their phones or tablets! Simply assign practice to your students, and they will be able to access them through our apps for iOS and Android. Bonus: We will take care of all the grading and track their progress!  
Download on iOS

District Saves $1,300 Per Student!

Watch how a school district in El Paso, Texas, said goodbye to traditional textbooks and made the switch to customized digital FlexBooks. Are you next?
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