Doctoral Program in Education, Faculty of Teacher Training and Education, University of Lampung, Bandarlampung, Indonesia.
Doctoral Program in Education, Faculty of Teacher Training and Education, University of Lampung, Bandarlampung, Indonesia.
Doctoral Program in Education, Faculty of Teacher Training and Education, University of Lampung, Bandarlampung, Indonesia.
Doctoral Program in Education, Faculty of Teacher Training and Education, University of Lampung, Bandarlampung, Indonesia.
Computational thinking (CT) is increasingly positioned as a transferable competence required for complex problem solving in mathematics and other STEM domains, yet CT instruction is often implemented through fragmented activities rather than coherent, theory-driven learning models. This study developed and evaluated ARICT, an innovative learning model that integrates APOS-informed cognitive construction, Realistic Mathematics Education (RME) contextualization, and digital learning supports to strengthen students’ CT while maintaining disciplinary understanding. The research adopted a research and development approach aligned with the Borg and Gall model, implemented within a mixed methods paradigm. After needs analysis and evidence mapping, the ARICT package was produced, validated by experts, refined through a pilot study, and tested through a nonequivalent control group pretest–posttest field trial. The main study involved four intact Linear Algebra classes focusing on vectors (N = 80), comprising an experimental group (N = 41) receiving ARICT and a control group (N = 39) receiving conventional instruction. Baseline equivalence was supported by nonsignificant pretest differences (p > .05). Effectiveness was evaluated using ANCOVA with pretest scores as covariates. The results showed that ARICT significantly improved CT compared with conventional instruction, F(1, 77) = 98.67, p < .001, with higher adjusted posttest means for the experimental group (Madj = 78.52) than the control group (Madj = 61.34) and a large effect (partial η² = .56). ARICT also significantly improved vector conceptual understanding, F(1, 77) = 45.21, p < .001, with adjusted means of 82.15 (experimental) and 70.98 (control) and a large effect (partial η² = .37). Fidelity observations indicated high adherence to intended instructional conditions in both groups, supporting internal validity. These findings suggest that ARICT provides a coherent, scalable instructional model for embedding CT within mathematics learning, yielding strong CT gains without sacrificing conceptual mastery.

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