CK-12

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I'm here to help you with homework, test prep, and explanations. Upload a photo, draw an equation, or use the math keyboard for complex problems.

(4.0)
Average rating 4.0 out of 5

Free, Freemium

Tool Information

Company

CK-12 Foundation

Founded

2007

Pricing

Free, Freemium

About CK-12

CK-12 is a free online learning platform with interactive lessons and practice for math and science. It is used by students and teachers for self-study.

Pros

  • ✔️ Free and accessible for everyone
  • ✔️ Covers multiple subjects (Math, Science, etc.)
  • ✔️ Interactive simulations and videos
  • ✔️ Available as web and mobile app
  • ✔️ Personalized learning paths

Cons

  • ✖️ Requires internet for most features
  • ✖️ Limited advanced or specialized content
  • ✖️ Interface can feel a bit basic
  • ✖️ Not all resources have in-depth explanations

Key Features

✔️ Rich library of textbooks and study materials
✔️ Interactive simulations for better understanding
✔️ Practice quizzes and adaptive learning
✔️ Video lessons and step-by-step explanations
✔️ Available in multiple languages
✔️ Teacher tools for creating assignments

English Thumbnail
Introducing CK-12's Flexi 2.0

Ready-to-Use Prompts

Copy and customize these prompts for your specific needs

1. Economic Development Comparison

“Write a report comparing (developed and developing countries) based on (education, healthcare, and employment opportunities).
Explain (the major factors causing inequality) using (real-world examples and statistics).”

2. Role of Government in Society

“Explain how (the government) helps in maintaining (law, order, and social welfare) in a country.
Add (examples from India or other nations) and discuss (the importance of public participation in governance).”

3. Impact of Industrial Revolution

“Create a presentation or paragraph on (The Industrial Revolution and Its Social Impact) covering (economic changes, urbanization, and workers’ conditions).
Include (historical examples and modern parallels) for better understanding.”

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Pricing Plans

Free Plan

AVAILBLE

Paid Plans

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Use Cases

Learn school subjects with simple explanations.

Practice math and science using interactive exercises.

Read short, easy-to-understand chapter notes.

Watch concept videos to understand topics faster.

Prepare for exams using quick revision materials.

[tool_use_cases

Teachers creating lesson plans and homework

Preparing for exams with practice tests

Learning math and science concepts interactively

Supplementing classroom education with digital tools

Homeschooling support for parents

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