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All Journal JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) Polinomial : Jurnal Pendidikan Matematika
Gisty, Rival Ananda
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Education Mathematics

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ANALISIS KESALAHAN MAHASISWA PENDIDIKAN MATEMATIKA TERHADAP MATERI DERET TAK HINGGA PADA ANALISIS REAL Naibaho, Joel Shintong; Gisty, Rival Ananda; Lubis, Sutan Ismail Akbar Rafsanjani; Sidauruk, Vico Putra; Simanullang, Michael Christian
JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) Vol 11, No 1 (2025)
Publisher : Fakultas Keguruan dan Ilmu pendidikan (FKIP) Universitas Labuhan Batu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpms.v11i1.7445

Abstract

Pemahaman konsep deret tak hingga merupakan salah satu tantangan utama dalam pembelajaran Analisis Real. Penelitian ini bertujuan untuk menganalisis kesalahan mahasiswa dalam menyelesaikan soal deret tak hingga berdasarkan indikator Kastolan, yang mencakup kesalahan konseptual, prosedural, dan teknik. Pendekatan yang digunakan adalah kualitatif deskriptif dengan subjek lima mahasiswa Program Studi Pendidikan Matematika Universitas Negeri Medan yang dipilih melalui teknik purposive sampling. Data diperoleh melalui lima soal uraian yang dianalisis secara mendalam. Hasil penelitian menunjukkan bahwa dari total 18 kesalahan, kesalahan prosedural paling dominan (44,44%), diikuti kesalahan konseptual (33,33%) dan teknik (22,22%). Temuan ini mengindikasikan perlunya penekanan pada penguatan pemahaman prosedural dan penalaran logis dalam pembelajaran matematika tingkat lanjut.
Pengembangan Media Pembelajaran Statistika Deskriptif Berbasis Website Edukasi dengan Pendekatan Problem-Based Learning untuk Meningkatkan Pemahaman Matematis Siswa SMA Gisty, Rival Ananda; Tarigan, Gita Helena; Adhawina, Raissya; Tampubolon, Stephani Theresa Vania; Lubis, Sutan Ismail Akbar Rafsanjani; Siregar, Sutan Surya Darpan
Polinomial : Jurnal Pendidikan Matematika Vol. 5 No. 1 (2026)
Publisher : Papanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56916/jp.v5i1.3305

Abstract

Statistics is often considered difficult by high school students because the learning approach tends to be theoretical and less interactive, resulting in students' low mathematical understanding of concepts such as mean, median, and mode. This study aims to develop educational website-based learning media with a Problem-Based Learning (PBL) approach to improve students' mathematical understanding. The research method uses the Research and Development (R&D) model with the adoption of the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. The research subjects were grade XI students of Imelda Private High School Medan who were divided into an experimental class (using PBL website media) and a control class (conventional method). Data were collected through validation sheets, student response questionnaires, and mathematical understanding tests (pre-test and post-test). The results of the website media were declared "Very Feasible" with a validation score of 95%. The effectiveness results showed a significant increase in the average post-test score (63.91) from the pre-test (26.26), with a Normalized Gain (N-Gain) score of 0.51 (category "Medium"). The student response questionnaire also showed a positive response, with an average of 82.57% ("Effective"). Implications This media, which has innovative features such as a statistical calculator and Excel upload data analysis, serves as an effective scaffold for PBL, encouraging students to conduct data analysis independently, and helping shift 73.9% of students from the "Very Low" ability category.
Co-Authors Adhawina, Raissya Lubis, Sutan Ismail Akbar Rafsanjani Michael Christian Simanullang Naibaho, Joel Shintong Sidauruk, Vico Putra Siregar, Sutan Surya Darpan Tampubolon, Stephani Theresa Vania Tarigan, Gita Helena