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Sri Tami Ningsih Daulay; Hadni Rahma; Erlia Utami Panjaitan; Witma Novita Atnur; Rahmi Syafriyeti. GRADE 10 STUDENTS’ DIFFICULTIES IN CLASSIFYING LIVING THINGS USING DETERMINATION KEYS AT SMAN 1 RANTAU SELATAN. akrabjuara 2025, 10, 1188-1200.