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Fluency · Advanced

Variables & Control

Names and values, strings and quotation marks, decisions and loops, lists and dictionaries, in Python and JavaScript.

2 units · 6 lessons · ~8 min

Unlock with: Curly Braces

Short and often beats long and rare: one or two lessons a day is plenty.

Unit 1

Variables and Output

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  1. Lesson 1: Hello World

    Mission: greet a new learner in Python. Match every quote and parenthesis around input and output.

    Apply · ~1 min · earlier practice recommended; you can continue anyway

  2. Lesson 2: Variables

    Mission: prepare a session counter. Keep camelCase names and uppercase constants exact.

    Apply · ~1 min · earlier practice recommended; you can continue anyway

  3. Lesson 3: Strings

    Checkpoint: assemble a welcome message in Python. Follow quotes and f-string braces carefully; aim for 95% keystroke accuracy.

    Apply · ~1 min · earlier practice recommended; you can continue anyway

Unit 2

Decisions and Loops

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  1. Lesson 1: If and Else

    Mission: follow an age check. Read each branch before typing its condition and braces.

    Apply · ~2 min · earlier practice recommended; you can continue anyway

  2. Lesson 2: Loops

    Mission: count five robot steps. Watch the loop start, stopping condition and increment.

    Apply · ~2 min · earlier practice recommended; you can continue anyway

  3. Lesson 3: Lists and Dictionaries

    Checkpoint: update a class register in Python. Type the names, dictionary keys and list operations accurately.

    Apply · ~1 min · earlier practice recommended; you can continue anyway