CK-12

CK-12 is an app to help students, and teachers improve K-12 learning globally by providing self-pace learning content & tools.

What is CK-12?

CK-12 is a distinctive Chrome extension that offers over 5,000 math and science concepts to facilitate self-pace learning for students and teachers globally. It covers a vast range of subjects and offers various learning methods including videos, assessments, and interactive objects. In addition, it allows online class management via groups, assignment of practices to students, and tracking their progress. CK-12 is completely free and maintained by a non-profit organization aiming at improving STEM education worldwide.

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Extension stats

By: https://www.ck12.org

View on Chrome Web Store

Users: 1,000,000+

Rating: 4.35 (49)

Version: 0.0.0.9 (Last updated: 2018-07-02)

Creation date: 2018-07-02

Risk impact: Very low risk impact

Risk likelihood: Very low risk likelihood

Manifest version: 2

Size: 12.02K

Email: we*****@ck12.org

URLs: Website

Ranking

# 510 ▲ 157106

Other platforms

Not available on Firefox

Not available on Edge

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Extension summary

Analyze keywords

Learn over 5,000 math and science concepts at your own pace and in your own style! (videos, assessments, interactive objects, etc)

Math subjects include: Arithmetic, Measurement, Algebra, Geometry, Probability, Statistics, Trigonometry, Analysis, and Calculus
Science subjects include: Earth Science, Life Science, Physical Science, Biology, Chemistry, and Physics
Other subjects include: SAT Exam Prep., Engineering, Technology, Astronomy, English, and History

Features: -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.

CK-12 Foundation is a non-profit that creates and curates high quality STEM content for students and teachers around the world.

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.

Pros

Great free online platform covering a wide range of material
Useful resource for both students and teachers
Supports teachers in creating a paperless classroom
Assessment features are helpful for guiding students
High-quality videos and lesson review questions

Cons

Cannot download content
Requires internet connection for most content
No downloadable grade book available
Content is not differentiated for below-grade-level readers
Not available in multiple languages

Most mentioned

Great tool for education
Surprisingly useful and free
Helpful for transitioning away from textbooks
Positive feedback on the app's effectiveness
Encouragement to maintain quality

Recent reviews

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Madison Francis, 2024-09-20

THE BEST OF THE BEST I DONT HAVE TO GO TO SCHOOL YEAAAAAAAAAAAA

duckyrice (duckyrice), 2023-05-16

well i am really suprised acctually, i love the idea. and for a free online platform covering what i would view to be a great sum of material is just awesome, i am slighly disapointed that you can't download content and for the most part you need to be connected to the internet. at least to my knolage but overal i am very please with what ck-12 has offered. all in all i think for what it is i recomend it