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Introducing our new Physics Interactive Simulations.
horse cart
contact lens
space station
Discover a whole new way of teaching.
Our simulations are compatible with tablets, laptops and desktops.
Get Started

Announcing our EPISD District Partnership



El Paso ISD and CK-12 partnered to help district adopt digital FlexBooks. Oh, and it also called for the end of the 50 pound backpack with this transition!
Learn more

Introducing our new Physics Interactive Simulations.
horse cart
contact lens
space station
Discover a whole new way of teaching.
Our simulations are compatible with tablets, laptops and desktops.

Announcing our EPISD District Partnership



El Paso ISD and CK-12 partnered to help district adopt digital FlexBooks. Oh, and it also called for the end of the 50 pound backpack with this transition!
Learn more

Introducing our new Physics Interactive Simulations.
horse cart
contact lens
space station
Discover a whole new way of teaching.
Our simulations are compatible with tablets, laptops and desktops.

Search for free, standards-aligned STEM teaching resources.

Find a Standards-Aligned FlexBook® Textbook
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What Teachers are Saying
"CK-12 is appropriate for a diverse group of students who learn in different ways.Teachers can have students progress at their own rates versus one size fits all." Jeannie Galindo Supervisor of Educational Technology Manatee County, FL
"CK-12 was able to save our department $4,000 in textbook costs this year. They are wonderfully portable and work on all devices." Brian Coughlin Math Instructor Columbus Catholic High School Marshfield, WI
"The multimodalities of content that CK-12 offers allow our students to learn using a diverse range of media, reaching all types of learners. Students can also keep track of their own understanding of certain skills, taking ownership of their learning." Michele Eaton Virtual Education Specialist MSD of Wayne Township Indianapolis, IN
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