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Siti Maemunah
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%.
Meningkatkan pemahaman konsep matematis melalui discovery learning berbantuan Geogebra Siti Maemunah; Nelly Fitriani; Puji Nurfauziah
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.v8i6.28261

Abstract

This study sought to ascertain whether students' comprehension of mathematical topics had increased as a result of using Discovery Learning with GeoGebra. This study employed a mixed model with a convergent parallel design. 58 eighth-graders from SMP Negeri 5 Purwakarta served as the subjects. Two groups of students were created: an experimental group and a control group. Pretests, posttests, and student response surveys were used to gather data. The Mann-Whitney test, normality, and N-Gain were used to assess the data. According to the data, both groups improved in the moderate category; nevertheless, the experimental class's average N-Gain (0.51) was higher than the control class's (0.38). The Mann-Whitney test findings showed a significant difference (sig. 0.004 < 0.05). Thus, the GeoGebra-assisted discovery learning model enhances conceptual mathematical knowledge more effectively than conventional learning. Furthermore, learning that encourages active participation in discovering ideas is well-received by students.
Co-Authors Fitriani, Nelly Lisda Kurnia Puji Nurfauziah Tiara Abdiassahirah