【非公式】ドパドリル（grmchn/dopa-drill）の非公式改造版。2次式の因数分解（x²の係数1・たすきがけ）だけを練習できるブラウザドリル。本家とは無関係です。
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Updated
Oct 21, 2026 - JavaScript
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math-drill
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Dopa Drill - Unofficial Ukrainian & Multi-language Performance-Enhanced Fork
pwa canvas offline-first educational-game math-game web-audio-api cloudflare-workers mental-arithmetic ukrainian-localization preschool-math dopa-drill math-drill
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Oct 18, 2026 - JavaScript
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