Samsul Bahri
UIN Sultanah Nahrasiyah Lhokseumawe

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Deconstructing Lecturer Performance Patterns Based on Longitudinal Data: An Educational Data Mining Approach Using K-Means Clustering` Basrul Basrul; Samsul Bahri; Alim Misbullah
MUST: Journal of Mathematics Education, Science and Technology Vol 11 No 1 (2026): JULI
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/must.v11i1.30854

Abstract

Lecturer performance evaluation (EDOM) in higher education is often reduced to a single average score that fails to capture the heterogeneity of teaching competency profiles. This study deconstructs lecturer performance patterns through an Educational Data Mining (EDM) approach to overcome the "Data Rich, Information Poor" phenomenon. Using an eight-semester longitudinal database (2021–2024) covering a population of 493 lecturers and 5,577 evaluation records at UIN Sultanah Nahrasiyah, an adaptive scale-harmonization procedure was applied to equate evaluation instruments that differed across years. Empirical validation using the Elbow Method identified three distinct performance typologies: an Excellence cluster (32.8%; IKD 3.97, minimal load), a High Productivity cluster (36.1%; extreme load of 23.69 classes, moderate performance), and an Underperformance cluster (31.1%; fundamental competency constraints despite a low workload). Pearson and Spearman correlation tests confirmed no significant linear relationship between teaching load and IKD (p > 0.05), reinforcing the non-linear nature of the relationship. These findings confirm the existence of a Productivity Paradox in higher education and recommend a shift from uniform HR development policies toward a data-cluster-based differentiation strategy.
ANALISIS KESALAHAN PENULISAN PADA PEMBELAJARAN BAHASA INDONESIA SISWA KELAS V DIGITAL DI MIN 4 KOTA LHOKSEUMAWE Suci Ratulmuna; Samsul Bahri; Zainal Abidin
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 3 (2026): Volume 12 No. 3, September 2026 Release
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i3.17321

Abstract

Writing is one of the most complex language skills because it requires students to apply spelling rules accurately and consistently. This study aims to describe the forms of writing errors made by fifth-grade students of the Digital Class at MIN 4 Kota Lhokseumawe, to identify the factors that cause these errors, and to describe the efforts made by the teacher to correct them. This research used a descriptive qualitative approach. Data were collected through participatory observation, in-depth interviews with the class teacher, and documentation of 17 students' procedural texts, and were analyzed using the Miles and Huberman model of data reduction, data display, and conclusion drawing. The validity of the data was ensured through source and technique triangulation as well as member checking. The results show that 133 writing errors were found and classified into five categories: spelling errors (41 errors, 30.8%), punctuation errors (26 errors, 19.5%), non-standard word errors (25 errors, 18.8%), capitalization errors (22 errors, 16.5%), and preposition errors (19 errors, 14.3%). The errors were caused by internal factors, such as low motivation to reread written work and limited reading habits, and external factors, such as habitual use of informal spoken Indonesian and heavy exposure to digital chat abbreviations, which proved more influential than regional language interference. The teacher has made various efforts, including direct explanation, direct and indirect correction, corrective feedback, habituating self-checking, and continuous writing practice, although these efforts still need to be intensified and integrated with literacy habituation at school and at home.
PENGARUH PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TEAM GAME TOURNAMENT (TGT) TERHADAP HASIL BELAJAR SISWA PADA MATA PELAJARAN IPAS DI KELAS IV SEKOLAH DASAR Delvita Syahputri; Jumat Barus; Samsul Bahri
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 03 (2026): Volume 12 Nomer 03, September 2026 Publication
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i03.17353

Abstract

This study aims to determine the effect of applying the cooperative learning model of the Team Game Tournament (TGT) type on the science and social studies (IPAS) learning outcomes of fourth-grade students at SD Negeri 2 Semadam, particularly on the topic of the influence of force on the motion of objects. The background of this research is the low learning outcomes of students taught through the Discovery Learning model commonly used by the teacher, where only 40% of students reached the minimum mastery criterion. A quantitative approach with a quasi-experimental method and a Nonequivalent Control Group Design was employed, involving 48 fourth-grade students divided into an experimental class (24 students) taught using TGT and a control class (24 students) taught using Discovery Learning. Data were collected through a multiple-choice achievement test administered as a pretest and posttest, which had been tested for validity and reliability. Data analysis included descriptive statistics, normality and homogeneity tests, and an independent sample t-test using SPSS version 27. The results show that the average posttest score of the experimental class (79.17) was higher than that of the control class (70.42). The independent sample t-test produced a significance value of 0.009 (p < 0.05), indicating that the null hypothesis was rejected. It is concluded that the application of the TGT cooperative learning model has a significant effect on the IPAS learning outcomes of fourth-grade elementary school students.