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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) JURNAL DERIVAT: JURNAL MATEMATIKA DAN PENDIDIKAN MATEMATIKA AKSIOMA: Jurnal Program Studi Pendidikan Matematika Desimal: Jurnal Matematika Jurnal SOLMA JTAM (Jurnal Teori dan Aplikasi Matematika) Jurnal Ilmiah Pendidikan Profesi Guru Limacon: Journal of Mathematics Education Mandalika Mathematics and Educations Journal Journal of Medives: Journal of Mathematics Education IKIP Veteran Semarang Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Jurnal Pendidikan MIPA Jurnal Pendidikan Progresif Mathematics Education Journal Mathema: Jurnal Pendidikan Matematika
Agung Putra Wijaya
University Of Lampung
Agriculture, Biological Sciences & Forestry Education Mathematics Social Sciences Other

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Quality Analysis of Mathematical Representation Test Instruments in Junior High School Statistics Nyoman Gita Gayatri; Fadhlur Rohman; Angga Saputra; Agung Putra Wijaya; Chika Rahayu
MATHEMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 8 No. 1 (2026): MATHEMA
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jm.v8i1.1370

Abstract

This study aims to analyze the quality of an essay test instrument measuring students’ mathematical representation ability on eighth-grade statistics material, which was administered to ninth-grade students at SMP Negeri 1 Bandar Lampung. The analysis covers item validity, reliability, difficulty level, and discrimination index. This study employed a quantitative approach with a descriptive method. The research subjects were 27 ninth-grade students, while the object of the study consisted of six essay items on statistics that were developed based on indicators of mathematical representation ability. The results show that only three items (numbers 2, 4, and 6) meet the validity criteria, while items 1, 3, and 5 are invalid. The reliability coefficient of the instrument is 0.685, which falls into the moderate category and is therefore acceptable. All items are categorized as easy based on the difficulty index analysis. However, the discrimination index analysis indicates that all items have low discrimination power and thus fail to distinguish between high- and low-ability students. These findings imply that the instrument requires comprehensive revision, particularly in terms of difficulty level and item quality, in order to more accurately measure students’ mathematical representation ability in statistics.
Peningkatan Kompetensi Guru dalam Merancang Pembelajaran dengan Pendekatan Deep Learning Wijaya, Agung Putra; Maulina, Dina; Viyanti, Viyanti; Rinaldi, Daniel
Jurnal SOLMA Vol. 15 No. 1 (2026)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

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Abstract

Background: Implementasi pendekatan deep learning di salah satu SMA Negeri di Kabupaten Pesawaran Propinsi Lampung masih menghadapi tantangan. Para guru mengaku masih dominan menggunakan pendekatan konvensional dalam pembelajaran. Oleh karena itu, diperlukan kegiatan pelatihan bagi para guru yang bertujuan untuk meningkatkan kompetensi para guru dalam mengimplementasikan pendekatan deep learning. Metode: Kegiatan ini dilaksanakan melalui metode pelatihan kerja dengan melibatkan 39 guru. Metode ini dilaksanakan dalam 3 tahap, yakni off the job training, on the job training, dan off the job training. Evaluasi kegiatan ini dilaksanakan melalui pemberian pretest dan posttest yang selanjutnya dilakukan analisis Ngain. Hasil: Hasil pretest menunjukkan bahwa para peserta hanya mencapai sekitar 27% dari skor maksimal sehingga pemahaman awal yang dimiliki para peserta masih lemah. Setelah mendapatkan paparan materi, diskusi, dan menyusun rancangan pembelajaran, terjadi peningkatan rata-rata hasil posttest jika dibandingkan dengan rata-rata hasil pretest dengan variasi perbedaan pemahaman yang semakin sempit. Kesimpulan: Kegiatan ini efektif dalam meningkatkan kompetensi para guru dalam merancang pembelajaran dengan pendekatan deep learning. Hal ini ditunjukkan dengan (1) rata-rata peningkatan kompetensi guru dalam merancang pembelajaran dengan pendekatan deep learning tergolong tinggi dan (2) sebanyak 71.79% guru memperoleh peningkatan dengan interpretasi tinggi.
The Effect of Video Use in the Problem Based Learning Model on Students Mathemathical Representation Abilities Sephia Virgiani Effendi; Nurhanurawati; Agung Putra Wijaya
MATHEMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 8 No. 2 (2026): MATHEMA
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jm.v8i2.1473

Abstract

This study investigated the effect of video-assisted Problem-Based Learning (PBL) on students’ mathematical representation abilities. The study population consisted of all Grade VIII students of SMP Negeri 14 Bandar Lampung in the 2025/2026 academic year, encompassing eleven classes (VIII-A to VIII-K). Using purposive random sampling, 30 students from class VIII-I and 32 students from class VIII-J were selected as the research sample. The study adopted a pretest–posttest control group design, in which class VIII-J served as the experimental group and received video-assisted PBL, while class VIII-I served as the control group and received PBL without video assistance. Quantitative data were obtained through a mathematical representation ability test. The results of the t-test revealed that the increase in mathematical representation ability among students in the experimental group was significantly higher than that of students in the control group. Therefore, video-assisted PBL has a significant positive effect on students’ mathematical representation abilities.
Co-Authors Abung, Miranda Ahmad Qolfathiriyus Firdaus Angga Saputra Arif Abdulloh Atika Jamila Ayu Kusumaningtyas Caswita Caswita Coesamin, M Coesamin Dewi Maharani Dina Maulina Dwi Permatasari Dwi Rika Pratiwi Eka Septia Budi Asih erna wati Etia Etia Fadhlur Rohman Firdaus, Iqbal Girsang, Melan Kristina Gustina Nandari Haninda Bharata Hidayat Pujisiswanto Ibirilia, Elvira Sesie Jamal Ludinsyah Jamila, Atika Jamila Jelly Dharmawan Kenny Candra Pradana M. Coesamin M. Coesamin M. Coesamin M. Coesamin Mardiyana Mardiyana Marlinawati Marlinawati Median Agus Priadi Meliyani Lutfiah Melya Riniarti Munaf, Alika Fadhilah Nadila Rizkiana Niki Pujarwati Nurain Suryadinata Nurhadian, Yardan Permata Nurhanurawati Nurhanurawati Nurhanurawati Nyoman Gita Gayatri Pentatito Gunowibowo Pentatito Gunowibowo Raden Ajeng Diana Widyastuti Rahayu, Chika Raju Parlindungan Rifan Winarto Rifandi Hidayat Rifatur Rofika Rinaldi, Daniel Rini Asnawati Rini Asnawati Rini Asnawati Rini Rita T Marpaung Ronaldo Redi Caprio Rosalia Apri Yanti Sanjaya, Purba Secy Olyvia Sephia Virgiani Effendi Sri Hastuti Noer Sri Suryanti Sri Wulandari Sugeng Sutiarso Suyono Suyono Tia Agnesa Tina Yunarti Tina Yunarti Undang Rosidin Viyanti Viyanti Wahib Nurmansyah Wayan Rumite Widyastuti Widyastuti Winarto, Rifan Yanto, Bagus Yulia Pratiwi Yulia Pratiwi