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All Journal Journal Evaluation in Education (JEE) Jurnal THEOREMS (The Original Research of Mathematics)
Suci Frisnoiry
State University of Medan
Education Social Sciences Other

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Development of Statistical Teaching Materials using Statcal to Enhance Students' Statistical Literacy and Self-Efficacy Elfitra Elfitra; Tiur Malasari Siregar; Suci Frisnoiry
Journal Evaluation in Education (JEE) Vol 6 No 1 (2025): January
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jee.v6i1.1321

Abstract

Purpose of the study: This study addresses the challenges of limited teaching materials and the need for innovative tools to enhance students' statistical literacy and self-efficacy by developing inferential statistics teaching materials integrated with Statcal software. The primary aim is to create and evaluate the effectiveness of these materials in improving students' skills and confidence in statistical learning. Methodology: The research employed a qualitative approach and involved collaboration with two material expert lecturers, one statistical program expert lecturer, and one student. The development process followed four stages: definition, design, development, and dissemination, ensuring a comprehensive framework for creating effective teaching resources Main Findings: Validation results showed the materials were valid with a score of 4.21, practical with an 83.72% score, and effective with an 82.4% score, all in the good category. Additionally, the teaching materials significantly improved students' statistical literacy (72.78%) and self-efficacy (73.52%), categorized as good. Novelty/Originality of this study: The utilizing interactive tools such as Statcal, students can understand statistical concepts more deeply through a practical and contextual approach. This is relevant to be applied to statistics learning in schools and universities, especially in preparing students to face the challenges of the digital data era. In addition, this study also encourages teachers to integrate technology in learning to create a more engaging and effective learning experience.
The effect of problem-based learning model assisted by geogebra on students’ mathematical problem-solving ability in SPLDV material of 9th grade at state junior high school 45 Medan Putri Lingga Sari; Suci Frisnoiry
Jurnal THEOREMS (The Original Research of Mathematics) Vol. 11 No. 1 (2026): Volume 11 Number 1 January 2026
Publisher : Program Studi Pendidikan Matematika Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/th.v11i1.16192

Abstract

This study aims to determine whether students’ mathematical problem-solving ability taught using the problem-based learning model assisted by GeoGebra is higher than that of students taught using conventional learning in Grade IX of State Junior High School 45 Medan in the academic year 2025/2026. The research method used was a quasi-experimental method. The sample of this study consisted of two classes, namely class IX-2 as the control class and class IX-3 as the experimental class. Based on the results of the study, it was found that the mathematical problem-solving ability of students in the experimental class showed a significant improvement with an average pretest score of 56.13 and a posttest score of 81.33. The results of the mathematical problem-solving ability test of students in the control class also showed significant improvement with an average pretest score of 57.7 and a posttest score of 73.23. Based on the t-test results, it was obtained that t_hitung > t_tabel was 9.0418 > 2.002, which means that the mathematical problem-solving ability of students taught using the problem-based learning model assisted by GeoGebra is higher than that of students taught using conventional learning
Co-Authors Elfitra Elfitra Putri Lingga Sari Tiur Malasari Siregar