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All Journal Journal of Advanced Sciences and Mathematics Education
Yohanes Surya
IT del
Chemistry Education Mathematics Physics Social Sciences

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Rising scores, persistent gaps: Mathematics readiness after gasing matriculation at Institut Teknologi Del in the 2026/2027 academic year Oktofianus Sedubun; Mubiar Agustin; Asep Deni Gustiana; Yohanes Surya; Mai Rosalli Matondang
Journal of Advanced Sciences and Mathematics Education Vol. 6 No. 4 (2026): Journal of Advanced Sciences and Mathematics Education
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jasme.v6i4.16668

Abstract

Background: Incoming engineering students often have unequal mathematical preparation, while evaluations of intensive matriculation programmes tend to emphasise average improvements rather than persistent differences in readiness. Aim: This study examined changes in mathematics readiness following GASING-based matriculation at Institut Teknologi Del, focusing on differences across instructional groups and students' initial mathematical abilities. Method: A quantitative one-group pre-test–post-test design was employed involving 282 students from eleven instructional groups and ten study programmes. The programme comprised 48 instructional hours over six days. Data were analysed using paired-samples t-tests, normalised gain, analysis of covariance, correlation analysis, baseline quartiles, and descriptive dispersion measures. Result: Mean scores increased from 16.72 to 57.05, representing a difference of 40.34 points (95% CI [38.45, 42.22]). The within-subject effect size was large (Cohen's dz = 2.51), and 99.6% of participants achieved higher final scores. However, only 45.0% reached the 60-point threshold. Mean normalised gain was 0.507, with a positive association between initial ability and normalised gain (r = .600). Absolute score dispersion increased, although relative dispersion decreased. Conclusion: The programme was followed by substantially higher mathematics scores, but differences associated with initial ability persisted. Given the non-equivalent assessments and absence of a comparison group, causal effectiveness cannot be established. The findings suggest the importance of diagnostic assessment and differentiated mathematical support for students with lower initial readiness.
The effect of the GASING method on mathematical problem-solving ability of grade V elementary school students: A mixed-methods study Arnacikalati; H.Dede Margo Irianto; Ai Sutini; Yohanes Surya; Mai Rosalli Matondang
Journal of Advanced Sciences and Mathematics Education Vol. 6 No. 4 (2026): Journal of Advanced Sciences and Mathematics Education
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jasme.v6i4.1678

Abstract

Background: Mathematical problem solving remains challenging in primary classrooms, and GASING (Gampang, Asyik, dan Menyenangkan) combines concrete activities with enjoyable instruction. Aims: This study described changes in Grade V students' problem-solving scores following GASING lessons and explored participants' accounts of the learning experience. Methods: A sequential explanatory mixed-methods study combined a single-group pretest-posttest assessment of 20 students with interviews involving four students and two teachers. The intervention consisted of six 80-minute lessons over three weeks. Results: Mean scores increased from 44.00 (SD = 6.81) to 86.00 (SD = 7.54), a 42.00-point difference. The reported paired test was t(19) = -19.741, p < .001; a sign test based on the non-overlapping score ranges also yielded p < .001. The class-level normalized gain computed from the reported means was 0.750. Four reported qualitative themes concerned enjoyment, concrete representation, playful participation, and teacher facilitation. Conclusion: The results indicate a marked within-class improvement after instruction, but the absence of a comparison group, potential assessment-form differences, and incomplete qualitative source records preclude a causal claim.
Co-Authors Ai Sutini Arnacikalati Asep Deni Gustiana H.Dede Margo Irianto Mai Rosalli Matondang Mai Rosalli Matondang Mubiar Agustin Oktofianus Sedubun