: In Kumon, if a student makes an error, the grader marks it with a small circle, and the student must correct it until it is perfect, at which point it receives a large circle. Curriculum Breakdown Key Skills Defining Words Expanding vocabulary and understanding word functions. Sentence Building Mastering word order, punctuation, and verb forms. Identifying Ideas Extracting the main point from short stories. Comparing & Contrasting

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: It allows for "self-marking," a core pillar of the Kumon Method . By comparing their work to the Kumon Answer Key , students learn to spot their own errors in spelling, punctuation, and grammar.