Mutation-Based Error Diagnosis in a Web Intelligent Tutoring System for First-Degree Equations: A Quasi-Experimental Study

  • Alan de Oliveira Santana Universidade Federal do Rio Grande do Norte (UFRN)
  • Thiago Reis da Silva Instituto Federal de Educação, Ciência e Tecnologia do Maranhão (IFMA)
  • Eduardo Henrique da Silva Aranha Universidade Federal do Rio Grande do Norte (UFRN)

Resumo


This paper investigates the use of mutation analysis as a mechanism for diagnosing student errors in a Web-based Intelligent Tutoring System for first-degree equations. The proposed module generates alternative solution trajectories by injecting atomic error patterns into correct solution steps and comparing the resulting answers with student responses. A quasi-experimental study involving 113 participants was conducted using a simulated test with ten procedurally generated problems. The mutation engine identified 70 of 387 incorrect answers (18.09%), while the guided step-by-step interaction achieved a 75.94% accuracy rate (101 correct responses out of 133). Results indicate that mutation-based reasoning reconstruction can provide interpretable diagnostic feedback and support guided problem solving. The paper discusses the potential, limitations, and future applications of mutation-based diagnosis in Intelligent Tutoring Systems.
Palavras-chave: Intelligent Tutoring Systems, Mutation Analysis, Error Diagnosis

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Publicado
05/10/2026
SANTANA, Alan de Oliveira; DA SILVA, Thiago Reis; ARANHA, Eduardo Henrique da Silva. Mutation-Based Error Diagnosis in a Web Intelligent Tutoring System for First-Degree Equations: A Quasi-Experimental Study. In: SIMPÓSIO BRASILEIRO DE INFORMÁTICA NA EDUCAÇÃO (SBIE), 37. , 2026, Goiânia/GO. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2026 . p. 1262-1275. DOI: https://doi.org/10.5753/sbie.2026.27726.