Practice math problems in an adventure-style game. Solve arithmetic drills to progress through 27 mastery blocks. Earn up to 3 stars per block. Complete daily challenges for streak bonuses. Track progress and unlock new levels.
Learn about digital and analog sensors for projects. View technical specs and circuit diagrams. Follow step-by-step connection guides. Access ready-to-use code examples with explanations.
Learn verb conjugations with instant feedback drills. Access dictionary, masu-form, te-form, and other conjugations. Study 200+ core including ichidan, godan, and irregulars. Use offline without login or internet.
