Capaian kemampuan berpikir kritis mahasiswa pada pembelajaran trigonometri menggunakan Lembar Kerja Peserta Didik (LKPD) berbasis etnomatematika Tabuh Sigegar Bumi

Abstract

Critical thinking is essential in learning trigonometry, yet quantitative evidence on university students’ critical thinking after using worksheets (LKPD) based on local ethnomathematics is limited; previous studies mostly involved school students, focused on product development, or were qualitative. This study aimed to describe students’ critical thinking achievement after trigonometry learning with a Tabuh Sigegar Bumi ethnomathematics-based LKPD and to test whether it exceeded a mastery threshold. A pre-experimental one-shot case study involved 14 purposively selected mathematics education students at IAIN Kerinci. Essay-test scores (interpretation, analysis, evaluation, inference) were analyzed using descriptive statistics, the Shapiro-Wilk test, and the Wilcoxon signed-rank test against a threshold of 75 because the data were not normally distributed (W = 0.863; p = 0.034). The mean score was 84.57 (0–100 scale; SD = 8.83; range 66–95), and 12 of 14 students (85.71%) reached the threshold; scores were significantly above the threshold (Z = −2.703; p = 0.004; r = 0.72). Achievement was highest on inference and lowest on analysis. Without a pretest or comparison group, the results describe post-instruction achievement, not improvement or an effect of the LKPD. Further testing with pretest-posttest or comparison-group designs is needed.