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All Journal Inovasi Matematika (Inomatika)
Abdul Rachman Taufik
Mathematics Education, Universitas Musamus, Indonesia
Mathematics

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Enhancing Critical Thinking Skills of Junior High School Student: Development of Interactive Worksheet Based on Discovery Learning Model Khumaeroh Dwi Nur'aini; Abdul Rachman Taufik
Jurnal Inovasi Matematika Vol. 7 No. 1 (2025): Inovasi Matematika
Publisher : Pendidikan Matematika Universitas Muhammadiyah Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35438/inomatika.v7i1.485

Abstract

This study aims to develop interactive worksheet using liveworksheet based on discovery learning to improve students' critical thinking skills. This study uses the Design and Development (D&D) method and the 4D development model consisting of 4 steps, namely define, design, develop, and disseminate. However, the disseminate stage was not carried out due to time constraints in the study. The implementation of the study was carried out in class VIII MTs Almunawwaroh Merauke with a sample of 47 students. The instruments used in this study consisted of a validation sheet to test the validity of interactive worksheet, an observation sheet to test the practicality of interactive worksheet, a student response questionnaire and a test to test the effectiveness of interactive worksheet. The results of the study obtained that the interactive worksheet device that had been developed had met the criteria of valid, practical, and effective. The results of the validity of interactive worksheet by experts obtained an average value of the validation results in each aspect in the valid category. The results of the practicality of interactive worksheet obtained an average value in the aspect in the practical category. The results of the effectiveness of the interactive worksheet were obtained from the results of student responses and the improvement of students' critical thinking skills. The results of the student responses obtained positive responses and students' critical thinking skills of 0.665 with a moderate category with an interpretation of effectiveness in the effective category. These results indicate that the use of the interactive worksheet that has been developed is an alternative to improve students' critical thinking skills.
Pengembangan Lembar Kerja Mahasiswa Berbasis Discovery Learning untuk Meningkatkan Kemampuan Pemahaman Konsep Kalkulus Integral Oswaldus Dadi; Abdul Rachman Taufik
Jurnal Inovasi Matematika Vol. 8 No. 2 (2026): Inovasi Matematika
Publisher : Pendidikan Matematika Universitas Muhammadiyah Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35438/zpwaqw10

Abstract

Students' low conceptual understanding of integral calculus highlights the need for innovative instructional materials that promote self-directed learning. This study aimed to develop discovery learning-based student worksheets (Lembar Kerja Mahasiswa - LKM) for integral calculus that are valid, practical, and effective in enhancing students' conceptual understanding. The study employed a Research and Development (R&D) approach using the Four-D model, which was modified into three stages: define, design, and develop. The participants were 16 undergraduate students enrolled in the integral calculus course in the Mathematics Education Study Program at Universitas Musamus. The research instruments included expert validation sheets, student response questionnaires, and conceptual understanding tests administered as pretests and posttests. The data were analyzed using quantitative and qualitative descriptive techniques. The results showed that the developed LKM met the highly valid criteria based on expert evaluations, with validity percentages ranging from 85,0% to 90,6%. The practicality test indicated that the LKM was highly practical, with student response percentages ranging from 85,5% to 89,5%. The effectiveness test demonstrated an increase in the mean student scores from 14,5 on the pretest to 84,8 on the posttest, with an average N-Gain score of 0,84, categorized as high. These findings indicate that the discovery learning-based LKM is valid, practical, and effective for use as an innovative instructional material to enhance students' conceptual understanding of integral calculus.
Co-Authors Khumaeroh Dwi Nur'aini Oswaldus Dadi