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OpenAha icon

OpenAha

OpenAha offers interactive courses (more than 900 lessons) in math, physics and chemistry. Every lesson is a short sequence of hands-on puzzles: you predict, drag sliders and run live simulations before anything is explained, with instant feedback and a "Why?

OpenAha: free, interactive math and science lessons

Cost / License

  • Free
  • Open Source (MIT)

Application type

Platforms

  • Online
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Double slit: fire electrons one at a time and watch interference stripes build up
+8
Kepler's second law: orbit wedges sweep equal areas in equal times
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Education & Reference, Remote Work & Education

GitHub repository

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OpenAha was added to AlternativeTo by K-Arash on and this page was last updated .

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What is OpenAha?

OpenAha offers interactive courses (more than 900 lessons) in math, physics and chemistry. Every lesson is a short sequence of hands-on puzzles: you predict, drag sliders and run live simulations before anything is explained, with instant feedback and a "Why?" behind every answer.

No account, no ads, no paywall. Progress is saved in your browser. The project is open source, and learners and teachers can suggest improvements to any lesson step.