Hello World

Say hello to the world of computer science with this introductory activity that equips students with the basic coding skills and confidence to create apps.

Choose your Hello World theme!

Choose from these fun themes to code interactive characters in a world you create!

Featured student projects

Emoji

Click the emoji and see what happens!

Food

Make an interactive meal!

Animals

Meet the animals living in the sea.

Continue learning after Hello World

Hello World is a great starting point before doing CS connections.

Grades 3-5

Computer Science Connections

Makes connections between learning computer science (CS) and other subjects like math, language arts, science, and social studies.

Additional Resources

Curriculum Catalog

Comprehensive curriculum offerings for every grade and experience level featuring robust structured and self-paced learning options.

Video Library

Explore our large library of engaging and informative videos to learn about key computer science concepts on a broad range of topics.

Hour of Code

Looking for more short-form activities and resources for all age levels? Explore our large library of Hour of Code activities and tutorials!