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All Journal Jurnal Pengajaran MIPA Journal on Mathematics Education (JME) International Journal of Education Jurnal Didaktik Matematika Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam Delta-Pi : Jurnal Matematika dan Pendidikan Matematika International Journal on Emerging Mathematics Education (JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Edusentris: Jurnal Ilmu Pendidikan dan Pengajaran
Utari Sumarmo
Universitas Pendidikan Indonesia, Bandung
Arts Humanities Education Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Improving Mathematical Problem Solving Skills and Self-Confidence of Junior High School Students Using A Problem Based Learning Rindiani, Hesti; Sumarmo, Utari; Afrilianto, M
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol. 8 No. 3 (2025): VOLUME 8 NUMBER 3, SEPTEMBER 2025
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v8i3.27133

Abstract

Problem solving ability is one of the skills that need to be developed in students. The background of this study is based on the results of preliminary observations which show that students' problem solving skills and self confidence are still low, one of which is caused by the use of conventional learning methods. This study aims to determine the effect of problem-based learning on improving students' mathematical problem solving ability and self-confidence, see the effectiveness of problem-based learning on students' mathematical problem solving ability and self-confidence and see students' responses to problem-based learning. This research used quasi-experimental method with Pretest-Posttest Control Group Design. The research subjects were VIII grade students of SMP Negeri 2 Saguling as many as 64 students, consisting of two classes, namely experimental and control. The research instrument was a description test to measure mathematical problem solving ability and a Likert scale to measure students' self-confidence. Data were analyzed using normality test, homogeneity, t-test, Mann-Whitney, and N-Gain calculation. The results showed that there was a significant difference between the experimental and control classes in improving mathematical problem solving skills seen from the average n-gain value of the experimental class in the high category while the control class was in the medium category. Problem based learning is very effective in improving mathematical problem solving skills seen from the percentage of student learning completeness and effective in increasing student self confidence. Students' response to problem-based learning was positive.
Co-Authors A.A. Ketut Agung Cahyawan W Assya, Lily Aulin Budiyanto A.M Euis E. Rohaeti, Euis Euis Eti Rohaeti Harry Dwi Putra, Harry Dwi Hepsi Nindiasari Heris Hendriana I Gusti Agung Komang Diafari Djuni Hartawan Ihwana, Mirna Johanto, Tri Jozua Sabandar Kustiana, Asep M Afrilianto, M M. Afrilianto Ms Hamidah Mulyani, Elis Nelly Fitriani, Nelly Qohar, Abd. Rafiq Zukarnaen Rafiq Zulkarnaen Rahmah Johar Ratna Sariningsih Reviandari Widyatiningtyas, Reviandari Rindiani, Hesti Rintari, Rintari Rippi Maya Sari, Laras Mawar Siti Rahmatina Supriatna, Tatang Susilawati, Lia Tatang Herman, Tatang Ujang Rahmat Slamet, Ujang Wahyu Hidayat Yaya S. Kusumah Yusnita, Irra