Learn SNAP with Real Code Examples

Snap! extends Scratch with higher-order functions, lists, and more advanced abstractions.

It uses drag-and-drop puzzle-like blocks for creating programs visually.

It enables beginners to learn programming concepts without syntax barriers.

Snap! allows building custom blocks, procedures, and recursive logic.

It's widely used in education, CS principles courses, and outreach programs.

Drag-and-drop code blocks

Events, loops, conditionals

Recursion support

Sprites and stage interaction

Cloud saving and sharing

Blocks represent code statements

Scripts control sprite behavior

Events trigger execution

Variables and lists hold state

Custom blocks allow abstraction

Sprites - actors with scripts and costumes

Stage - main environment

Scripts - block-based programs

Assets - sounds and images

Custom Blocks - reusable functions

Drag blocks onto scripting area

Arrange visually to form logic

Run scripts using green flag

Create custom blocks for reuse

Share or export the project

Beginner: movement and events

Intermediate: variables, logic, lists

Advanced: custom blocks and recursion

Expert: higher-order functions

Research: modeling functional programming visually

Snap! vs Scratch: Snap! supports advanced CS concepts

Snap! vs Blockly: Blockly is a library; Snap! is a full language

Snap! vs Python: Python uses text; Snap! uses visual logic

Snap! vs Scratch Jr: Snap! is far more capable

Snap! vs App Inventor: Snap! is general-purpose; AI is app-focused

2008 – BYOB (Build Your Own Blocks)

2010 – Snap! rebranding

2013 – HOFs and lists introduced

2016 – Cloud support added

2025 – Widely used in CS classrooms

Sprite: on-screen programmable actor

Stage: main execution canvas

Script: block arrangement for behavior

Custom Block: user-defined function

Watcher: live variable inspector