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All Journal Kognitif: Jurnal Riset HOTS Pendidikan Matematika
Abd Aziz
Islamic Education Study Program, Faculty of Tarbiyah, Zainul Hasan Genggong Islamic University
Computer Science & IT Education Library & Information Science Mathematics Social Sciences Other

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Effect Numbered Head Together Based on Agrarian Ethnomathematics on Students’ Mathematical Communication Skills Dian Qurratul Aini; Abd Aziz; Eka Rahayu
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 6 No. 2 (2026): April - June 2026
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v6i2.4952

Abstract

Mathematics instruction needs to be designed contextually so that students are not only able to solve problems but also able to communicate mathematical ideas, strategies, and reasoning clearly. One relevant approach is the Numbered Heads Together (NHT) cooperative learning model, integrated with agrarian ethnomathematics as a context closely related to students’ lives. This study aimed to analyze the effect of implementing an agrarian ethnomathematics-based NHT model on students’ mathematical communication skills in linear programming. The study employed a quantitative approach with a quasi-experimental nonequivalent control group pretest-posttest design. The participants were 11th-grade students at SMA Istiqlal Sumber Centeng, Kotaanyar, Probolinggo, consisting of 26 students in the experimental class and 25 students in the control class. Data were collected through an essay test designed to measure indicators of mathematical communication and were analyzed using normality tests, homogeneity tests, and an independent samples t-test. The results showed that the data were normally distributed and homogeneous, and that there was a significant difference between the two groups, with a p-value of less than 0.001. The mean score of students’ mathematical communication skills in the experimental class reached 84.31, which was higher than that of the control class, at 76.92. This improvement was supported by the use of agricultural contexts, such as land planning and crop yield optimization, which helped students understand mathematical concepts more meaningfully. These findings indicate that integrating NHT with agrarian ethnomathematics can serve as an effective contextual learning approach.
Effect of a Teams Games Tournament Using Quizizz on Mathematical Reasoning as Viewed from the Level of Mathematics Anxiety Tantia Hediyanti Candra; Abd Aziz; Eka Rahayu
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 6 No. 2 (2026): April - June 2026
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v6i2.4953

Abstract

Mathematics instruction in schools still tends to be teacher-centered, so student engagement in developing mathematical reasoning is not yet optimal. This leads to students struggling to provide logical justifications and relying on formulas, as well as being influenced by affective factors such as mathematics anxiety; therefore, innovative instructional models such as the Teams Games Tournament (TGT) supported by Quizizz are needed. This study aims to analyze the effect of the Quizizz-assisted TGT model on students’ mathematical reasoning abilities as viewed from their level of mathematics anxiety regarding sequences and series. The study employed a quantitative approach using a quasi-experimental design with a nonequivalent control group pretest-posttest design. The research subjects were 11th-grade students at SMA Istiqlal, consisting of 25 students in the experimental class and 26 students in the control class. The instruments used were a mathematical reasoning essay test and a mathematics anxiety questionnaire using a Likert scale, both of which were validated and reliable. Data analysis was performed using an independent samples t-test, one-way ANOVA, and two-way ANOVA. The results showed that the average posttest score for the experimental class (84.36) was higher than that of the control class (76.73), with a significance level of 0.000 < 0.05; there was a difference based on mathematics anxiety with a significance level of 0.032 < 0.05; however, there was no interaction between the two variables with a significance level of 0.549 > 0.05. Thus, TGT assisted by Quizizz is effective in improving mathematical reasoning and can serve as an interactive learning alternative while reducing students’ mathematics anxiety.
Co-Authors Dian Qurratul Aini Eka Rahayu Tantia Hediyanti Candra