Language lab · First steps
🧱 Block coding (Blockly)
Concept → trace → write code → run tests → explain why → improve → mini-project. Start in the browser if you like; set up your own computer when you are ready.
🧪 Runs in your browserOfficial download & docs ↗
🧪 Browser workspace
Runs in a sandbox inside your browser with a time limit: no install needed, and your code never reaches our server.
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🧭 The 14-lab path
- 00 · Setup and verify — install the runtime and editor, run hello world, print the version, fix PATH
- 01 · Syntax and trace — follow each line and the value of every variable
- 02 · Logic — conditionals and decision trees
- 03 · Loops — trace tables and loop challenges
- 04 · Functions — break problems down and test each piece
- 05 · Data structures — lists, maps, stacks, queues and trees you can see
- 06 · Debugging — bug cases with a hint ladder
- 07 · Algorithms — search, sort and Big-O comparison
- 08 · Files and data — read and write fixture files
- 09 · API or database — talk to a mock API or a sandbox database
- 10 · Testing — write tests and read failing assertions
- 11 · Security — secure coding and dependency hygiene for this language
- 12 · Project — one portfolio mini-project
- 13 · Assessment — quiz, coding test, rubric and an explain-your-answer prompt
📚 Modules
- sequence
- repeat loops
- counting loops
- variables
- conditions
- logic
- lists
- functions
- from blocks to JavaScript
- from blocks to Python
🏗️ Mini-projects
- Times-table printer
- FizzBuzz
- Number guessing game
Projects use synthetic data only.