What question did this study set out to answer?

The research aims to design a learning trajectory for junior high students facing difficulties in linear equations.

From student difficulties to design of a hypothetical learning trajectory: The case of system of linear equations in two variables

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Qualitative case study reveals math difficulties in junior high school students, suggesting design of new learning trajectory.

The research aims to design a learning trajectory for junior high students facing difficulties in linear equations.
Conducted a qualitative case study with 19 junior high school students age 13-14
Investigated student difficulties using individual written tests and interviews
Designed a hypothetical learning trajectory based on findings and the RME theory.
Identified main difficulties include transforming word problems into mathematical models
Found common algebraic manipulation errors in solving equations
Proposed a model method as an effective strategy to address challenges.

Jupri et al. (2026) studied this question.

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