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Welcome to Oppia

Oppia's mission is to help anyone learn in an effective and enjoyable way.

Start learning with some of our most popular lessons:

Oppia's lessons are more fun and immersive than static videos or text, helping people learn by doing.

Lessons are simple to create and even easier to play. Learners receive tailored feedback based on areas for improvement.

Join over 250,000 learners and educators from around the world: start learning or share your knowledge today!

Share Your Knowledge

Whether you're a K-12 educator, a graduate student, or an individual who's passionate about a specific subject and wants to share your knowledge, Oppia welcomes you. Join the community and start exploring with us.