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All Journal Desimal: Jurnal Matematika Mandalika Mathematics and Educations Journal Griya Journal of Mathematics Education and Application
Sari, Noviana Puspita
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Education Mathematics Social Sciences

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Optimalisasi Pemanfaatan Media GeoGebra dan Lembar Kerja Peserta Didik (LKPD) untuk Meningkatkan Pemahaman Materi Dimesi Tiga Sari, Noviana Puspita; Tyaningsih, Ratna Yulis
Griya Journal of Mathematics Education and Application Vol. 4 No. 2 (2024): Juni 2024
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v4i2.463

Abstract

This research discusses the design and implementation of GeoGebra media and Student Worksheets (LKPD) for three-dimensional material. The main focus is to explore the potential use of media, such as 3D simulations, learning videos, and mathematical modeling applications, in increasing students' understanding of complex concepts. This research aims to analyze the benefits of using media in LKPD, including increasing student involvement, facilitating abstract understanding, and developing critical thinking skills. The research method used is Research and Development (R&D), which involves the needs analysis, design, development, implementation and evaluation stages. The research subjects consisted of 30 students taking the Mathematics Teaching Materials course. Data was collected through a questionnaire on student responses to the media used in the LKPD. The research results show that the use of media in LKPD significantly increases understanding of three-dimensional concepts. In addition, students responded positively to the use of media, which was considered to help visualize concepts and increase interest in learning. Media implementation strategies in LKPD, such as demonstrations, group assignments and class discussions, have proven effective in overcoming the challenges of three-dimensional mathematics learning. Thus, media integration in LKPD is recommended as an effective strategy to increase students' understanding and involvement in mathematics learning.
Pengembangan Media “CAKU” (CAri aKU) dan Lembar Kerja Peserta Didik (LKPD) untuk Meningkatkan Pemahaman Himpunan di Kelas VII Sari, Noviana Puspita; Tyaningsih, Ratna Yulis
Mandalika Mathematics and Educations Journal Vol 6 No 1 (2024): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i1.7268

Abstract

This research aims to develop interactive learning media CAKU and Student Worksheets (LKPD) to improve students' understanding of set material in class VII. The research method used is Research and Development (R&D) with the ADDIE (Analysis, Design, Development, Implementation, Evaluation) development model. The analysis stage involves identifying needs and problems in learning set material. The design stage focuses on designing media and LKPD that suit the characteristics of class VII students. In the development stage, the media was prepared and tested on a small scale through peer teaching in the Innovative Mathematics Learning Study class which was attended by 16 students to obtain input and improvements. Implementation is carried out through field trials to measure the effectiveness of the media and LKPD that have been developed. Evaluation is carried out to assess the increase in students' understanding before and after using the learning media. The research results show that learning media is effective in increasing students' understanding of the concept of set. Apart from that, it is considered interesting and motivating for students to learn, thus making the learning process more interactive and fun. Thus, it is hoped that the development of the learning media CAKU and LKPD can become an innovative alternative tool for educators in teaching set material, as well as improving the quality of learning in class VII.
Student’s errors in solving set problems for junior high school students based on newman's procedure Sari, Noviana Puspita; Sukoriyanto, Sukoriyanto; Sulandra, I Made
Desimal: Jurnal Matematika Vol. 8 No. 1 (2025): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v8i1.26550

Abstract

Errors in solving mathematical problems, especially in the material of sets, are still widely found in junior high schools. This study aims to describe the types of student errors and the factors causing them in solving problems about sets based on the Newman Procedure. The study was conducted on 31 eighth-grade students at one of the state junior high schools in Malang City, with three students (S-1 to S-3) selected as subjects by purposive sampling. The main instrument was the researcher, with supporting instruments in the form of tests and interviews. Data analysis was carried out using the Miles & Huberman model. The results of the study showed that subjects S-1 to S-2 misunderstood the problem (misunderstood what was actually known and asked in the problem incompletely), while S-3 did not. All subjects experienced transformation errors (wrong writing of mathematical models/formulas), process skills (miscalculations/not continuing the procedure), and final answers (wrong conclusions). The main causal factors include lack of reading accuracy, weak conceptual understanding, and errors in calculations and procedures. The implications of this study indicate the need for learning strategies that emphasize conceptual understanding, accuracy, and more systematic procedural solutions.
Co-Authors I Made Sulandra Sukoriyanto Yulis Tyaningsih, Ratna