Jatmiko, Budi, Postgraduate Science Education, Universitas Negeri Surabaya, Indonesi
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JPPS (Jurnal Penelitian Pendidikan Sains) Vol. 7 No. 2 (2018) - Articles
DEVELOPMENT OF NATURAL SCIENCE LEARNING INSTRUMENTS WITH CONTEXTUAL APPROACH USING PROBLEM SOLVING MODEL TO IMPROVE CRITICAL THINKING SKILL OF JUNIOR HIGH SCHOOL STUDENTS
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