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Nurjanah

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Open access Aug 2026

Representational Difficulty Across Cognitive Stages in Quadratic Functions: An APOS–Newman Analysis

This study aims to identify the types of students’ mathematical representation errors using Newman’s error classification and to analyze their relationships with the stages of cognitive development in the Action, Process, Object, and Schema theory. The study employed a qualitative descriptive approach involving 42 tent...

Hesty Marwani Siregar, Turmudi, Nurjanah et al. · 0 citations

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