• Discover high quality Common Core aligned digital content (digital textbooks and concepts).
  • Browse, learn and practice (or teach) over 5000+ concepts using multiple modalities (videos, images, text, quizzes, flashcards and more).
  • Manage your class through groups.
  • Assign practice and track progress and also continue discussions online (beyond class time!).
  • Downloadable content: All the material can be downloaded for offline use - so you can use it when and where you want it.
  • Always 100% Free.
  • Search and Share: Find anything from CK-12 library using Searchbox in Windows Charm. Also, share to any of the supported apps.

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45 ratings

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5 stars out of 5
· 2/28/2014
Clever app for getting students excited

Where was this when I was a kid? Beats Math Blaster, I can tell you that much. I think it's a great way to get students excited for even the most basic of concepts, like math.

5 stars out of 5
· 1/26/2014
Common core based learning tool for kids

Common core based learning tool for kids.

5 stars out of 5
· 1/26/2014
Great day-to-day tool

This app is helping me with day-to-day homework activities for me and my kids. Very useful in helping me understand the "new math" that comes home for homework.

5 stars out of 5
· 12/20/2015

This app is the most educational app I ever seen.I'm very smart and I even smarter because of this app.I dream becoming a scientist and a inventor.

5 stars out of 5
· 3/31/2016
Love it

Good app for students and teachers

5 stars out of 5
· 1/26/2014
Awesome, will share with my kid.

Awesome, will share with my kid.

5 stars out of 5
· 3/5/2014
Awesome free content

Great Win 8 App with awesome content for students and teachers

4 stars out of 5
· 6/18/2016

I love this app, but I wish that the CK-12 app was available for mobile as well as PC.

3 stars out of 5
· 11/5/2015
Needs bigger font

I like how we are able to search and practice concepts but what I don't like is the font size. On my laptop the font size it so small I have to resort to going on chrome to read the lesson