Hello World!

In Computer Science 101, the first program many students create is a simple one that outputs an iconic line of text: "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 from six fun themes to code interactive characters in a world you create!

Choose your Hello World theme

NEW! Space
Two cute astronaut and corgi characters floating in space
NEW! Soccer
Three giraffe, tiger, and rhino characters on a field about to start a game of soccer
Food
Three smiling pizza, cheeseburger, and taco characters on a plate
Animals
Three tiger, bear, and elephant characters on a grassy field with the sun shining
Retro
An 8-bit game with alien characters moving through a maze
Emoji
Three fun emoji characters with different expressions in front of a disco ball

Teacher Info

How to continue learning after Hello World

Hello World is the perfect first step for classrooms before trying the open-ended projects within our new curriculum, CS Connections! After learning some coding basics, students will be able to progress to CS Connections' cross-curricular projects.

Featured Student Creations

A student project featuring an animated gif of a fork moving across a plate next to avocado and pizza characters
Food
A student project featuring an animated gif of different emojis that say Click Me
Emoji
A student project featuring an animated gif of an underwater scene with dolphin, fish, and jellyfish characters in front of a shipwreck
Animals
A student project featuring an animated gif of a game of tag with two alien characters on a distant planet
Retro