KNOWLEDGE IN PRACTICE OF TEACHING RATIO AND PROPORTION: A CASE OF TWO IN-SERVICE PRIMARY TEACHERS

摘要

This study draws upon an ongoing research in investigating the knowledge in practice regarding Mathematics Content Knowledge (MCK) and Mathematics Pedagogical Content Knowledge (MPCK). It investigated the enactment of teachers’ knowledge in teaching practice. I use mixed method to explore two in-service primary teachers’ MCK and MPCK understanding categories on ratio and proportion and analysed teaching practice in the same content with developed framework regarding exploratory factor analysis for video observation. The result indicated that some teachers’ respond on written assessment could be observed in practice. However, the students misconception on ratio and proportion which were explored in written assessment were seldom appear in teaching practice due to no task for students to reveal misconception.udKeywords: MCK, MPCK, knowledge in practice, ratio and proportion, Indonesia