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YOSHIHIRO OTA
Learn vocabulary through structured audio reading
Learn English vocabulary using a structured memorization system based on phonetic reading. Practice with audio and text materials. Access bonus content including PDFs and MP3s for advanced learners.
TANZAM Inc.
Study words with images and example sentences
Learn vocabulary through illustrated stories and example sentences. Review words based on forgetting curve for long-term retention. Access level-specific wordbooks for TOEIC, English exams, and conversation.
StudySwitch, Inc.
Solve math problems and track progress
Solve math problems for middle school students. Practice equations, functions, geometry, probability, and data analysis. Includes exercises for grades 1, 2, and 3, plus review problems for grades 4, 5, and 6.
StudySwitch, Inc.
Solve math problems with pen input
Solve math problems covering fractions, decimals, units, equations, square roots, and basic word problems. Choose levels based on grade or math certification. Write intermediate calculations with finger input. Access all questions for free.
mikan Co.,Ltd.
Study vocabulary and practice tests
Learn English vocabulary and phrases with over 200 textbooks. Practice pronunciation alongside words. Access grammar, reading, and listening exercises for exams like TOEIC, English Proficiency Test, and university entrance.
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