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  1. 01Programming Museum playground page: 'The Children's Playground' heading on black, a number-guessing game below.

    Programming Museum

    EDUCATION

    Hangs real, runnable source code in frames you walk past room by room.

    Use in the browser
    ▲ 5 HN
    NEW 0h OLD WHEN SEENEDUCATION · Show HN · kept 2026.09.14