CK-12 is an app to help students, and teachers improve K-12 learning globally by providing self-pace learning content & tools.
Learn over 5,000 math and science concepts at your own pace and in your own style! (videos, assessments, interactive objects, etc).

Features of CK-12:
- Access Common Core and State Standards aligned content (digital textbooks and concepts).
- Browse, learn and practice (or teach) over 5000+ concepts using multiple modalities (text, videos, quizzes, flashcards and more).
- Manage your class online through groups.
- Assign practice to students and track their progress.
- Everything on our app and website is always 100% Free.
- A California-based non-profit organization, the goal of CK-12 is to increase access to free and customizable open educational resources.
 
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                  Games
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                  Instant - Messaging - Calling
                  Virus - Removal - Spyware - Malware
                  Virus - Removal - Spyware - Malware
                  Internet
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                  Cinema - Music
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                  Support download - upload
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                  Business software
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                  Office applications
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                  Graphic - Design
                  Graphic - Design
                  Education - Learning
                  Education - Learning
                  Utility Systems
                  Utility Systems
                  Form - Template
                  Form - Template
                  Email
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                  Convert audio - video
                  Convert audio - video
                  Data - Files
                  Data - Files
                  Acceleration - PC management
                  Acceleration - PC management
                  Support tools
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                  Browser - Addons
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                  Management - Edit photos
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                  Support Mobile
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                  Internet TIPs
Internet TIPs Game Guide
Game Guide 
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                     Learning Chinese for iOS 8.6 - Software to learn Chinese free
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                     Longman Dictionary of Contemporary English for iOS 6.3 - Senior English Dictionary for iPhone / iPad
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                  Listening to music & sound
                  Listening to music & sound
                  Education - Learning
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                  Travel - Place
                  Travel - Place
                  Weather
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                  Finance
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                  Security - Virus
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                  Web browser
                  Web browser
                  Management - Accelerate phone
                  Management - Accelerate phone
                  Horoscopes & Feng Shui
                  Horoscopes & Feng Shui
                  Ringtones Wallpapers
                  Ringtones Wallpapers
                  Cinema & Video
                  Cinema & Video
                  Entertain
                  Entertain
                  Health
                  Health
                  Map - Positioning
                  Map - Positioning
                  Office
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                  Support tools
                  Support tools
                  Email - Internet
                  Email - Internet
                  Social Network
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