Umar, Bahariyah, Postgraduate Science Education, Universitas Negeri Surabaya, Indonesi

• 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
  Abstract  PDF