Code.org
Free coding and AI lessons for all ages, including Hour of Code and Hour of AI activities.
What is Code.org?
Code.org is a non-profit offering free computer science and AI lessons for all ages. Its short activities (Hour of Code, Hour of AI) and full courses help learners and teachers get started with coding and AI concepts.
Think of it as a free computer science classroom.
What you can do with it
- Hour of Code and Hour of AI: short activities
- Full courses: for different ages
- AI lessons: how AI works
- Teacher tools: classes and progress
Get started in 3 steps
- Go to code.org
- Try a one-hour activity
- Sign up free to create a class
Try this today
- Complete an Hour of AI activity
- Try a game-based coding puzzle
- Set up a class for learners
Good to know
- Free: non-profit
- Many languages
- Great for beginners
Quick challenge
Complete one Hour of AI activity today!
Picked by the Scrollwell team · updated 25 Oct 2026. Code.org is run by its own company — read its privacy terms before you add learners' names or marks.