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Tiara Abdiassahirah
IKIP Siliwangi
Mathematics

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Analisis kesalahan siswa SMP dalam menyelesaikan soal aritmatika sosial menggunakan tahap kastolan Lisda Kurnia; Tiara Abdiassahirah; Siti Maemunah
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol. 7 No. 2 (2024): Maret
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v7i2.19800

Abstract

This research is motivated by the number of students who experience errors in solving social arithmetic problems. The subjects in this study were 21 students of class VIII F SMP Negeri 9 Cimahi. The method used is descriptive qualitative which aims to describe student errors in social arithmetic material using the Kastolan stage. The data analysis technique used in this study used an average percentage. While the purpose of this study is to find out and analyze student errors in working on social arithmetic problems. The results of this study indicate that students still experience conceptual errors with an average percentage of 24% with low criteria. Meanwhile, procedural errors have sufficient criteria with an average percentage of 45%. Then technical errors also have sufficient criteria with an average percentage of 54%.
Peningkatan kemampuan pemahaman konsep matematis siswa SMP dengan discovery learning berbantuan wingeom Tiara Abdiassahirah; Masta Hutajulu; Ratna Sariningsih
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol. 8 No. 6 (2025): JPMI
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v8i6.28684

Abstract

The purpose of this study is to develop junior high school students' understanding of mathematical concepts on the topic of triangle similarity through the use of the Discovery Learning model integrated with the Wingeom application. The sample in this study consisted of seventh-grade students from class VII-C as the experimental group and VII-A as the control group at SMP Negeri 1 Rancabali, with a total of 60 students. This study was conducted using a mixed-method approach of the Convergent Parallel Design type. The research steps included conducting a pretest, providing learning treatment, administering a posttest, and distributing a student response questionnaire. Data collection instruments included seven essay questions and a closed-ended questionnaire. Data processing was conducted using SPSS 25 for Windows and Microsoft Excel. The analysis results showed a rejection of H_0, leading to the conclusion that the Discovery Learning model assisted by Wingeom is effective in improving understanding skills. The survei results showed a very positive response to the implementation of Discovery Learning assisted by Wingeom, which proved to increase engagement as well as independent problem-solving.
Co-Authors Lisda Kurnia Masta Hutajulu Ratna Sariningsih Siti Maemunah