Abstract

ABSTRACT Background and Context Considerable numbers of Computer science (CS) undergraduate majors struggle in Theory of Computation (ToC) courses, which strengthen bimodality beliefs of student performance. Reasons for students struggling are assumed to be manifold but substantial ground is based on studies providing singular insights into this matter. Objective To understand students’ issues with ToC, we analysed their performance on homework and exams and replicated our study in two consecutive years. Method We used exploratory data analysis to compare students’ performances within single assignments. With one-way analyses of variances, we focused on significant differences between the years. Findings Our results indicate that students’ homework performance did not predict their exam performance and that all students, independent of their grade, had the most difficulty with formal proofs. Implications Our results challenge potential beliefs about bimodal student performance indicating all CS undergraduates require thorough training in proof techniques to improve their overall performance in ToC.

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