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All Journal Pythagoras: Jurnal Matematika dan Pendidikan Matematika Journal of Natural Sciences and Mathematics Research Aptisi Transactions on Management Symmetry: Pasundan Journal of Research in Mathematics Learning and Education Widya Aksara: Jurnal Agmaa Hindu Jurnal Dinamika Ekonomi Syariah Jurnal PEKA (Pendidikan Matematika) Jurnal Hurriah: Jurnal Evaluasi Pendidikan dan Penelitian Media Publikasi Promosi Kesehatan Indonesia (MPPKI) Jurnal Riset Manajemen dan Akuntansi (JURIMA) Jurnal Manajemen Bisnis Kewirausahaan Jurnal Pengembangan Pembelajaran Matematika Riemann : Research of Mathematics and Mathematics Education Kreano, Jurnal Matematika Kreatif Inovatif Hipotenusa: Journal of Mathematical Society Mathematics Education Journal Journal on Mathematics Education Nemui Nyimah Energy, Materials and Product Design
Sugiman
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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LE-Probale Model through Nila's Edumath Interactive Mobile Learning to Improve Mathematical Literacy Ubaidah, Nila; Zaenuri; Iwan Junaedi; Sugiman
Hipotenusa: Journal of Mathematical Society Vol. 6 No. 1 (2024): Hipotenusa: Journal of Mathematical Society
Publisher : Program Studi Tadris Matematika Universitas Islam Negeri (UIN) Salatiga

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Creating a supportive learning environment through psychological well-being is an important indicator in achieving true happiness in the learning process, and also through project-based learning so that it plays an important role in the learning environment and the results are very real. The aim of this research is to produce the LE-Probale model syntax. The learning model components used adopt Joyce and Weil. The quality of the product developed is evaluated based on product development evaluations developed by Plomp and Neeven, which include validity by validators, practicality and effectiveness of field trials by observers. The realization of the model syntax consists of ten stages, namely: 1) Preparing an adequate learning environment; 2) Delivery of learning objectives; 3) Selecting learning materials and determining topics that students must study inductively (from examples then generalizing); 4) Meaningful understanding is linked to everyday life; 5) Provide trigger questions to observe and solve; 6) Group formation; 7) Design and complete projects related to other subjects with the help of Nila's Islamic Edumath Interactive Mobile Learning; 8) Rearrange and compare representations of project results; 9) Evaluate the resulting projects; 10) Teacher and student reflection to look back at the learning that has taken place.
SOSIALISASI TEKNOLOGI POMPA TANPA MOTOR (HYDRAULIC RAM PUMP) UNTUK IRIGASI PERTANIAN BAGI SISWA-SISWA SMAIT DAARUL ILMI BANDAR LAMPUNG Sinaga, Jorfri Boike; Amrul; M. Irsyad; Ahmad Yonanda; David Sinaga; Ramadani, Tri Topan; Sugiman
Nemui Nyimah Vol. 4 No. 1 (2024): Nemui Nyimah Vol.4 No.1 2024
Publisher : FT Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/nm.v4i1.121

Abstract

Pada makalah ini diberikan kegiatan sosialisasi teknologi pompa tanpa motor (hydraulic ram pump) kepada siswa-siswa SMAIT Daarul Ilmi Bandar Lampung. Materi kegitan yang diberikan secara teori tentang prinsip kerja pompa tanpa motor, pemilihan bahan dan pembuatan komponen-komponen pompa tanpa motor dan praktik yaitu tentang pemasangan dan pengoperasian pompa di lapangan, dan perawatan pompa ini. Antusias siswa-siswa SMAIT Daarul Ilmi Bandar Lampung mengikuti kegiatan ini sangat baik untuk memperoleh pemahaman prinsip kerja dan pembuatan pompa tanpa motor (hydraulic ram pump). Hal ini dapat dilihat dengan sikap peserta yang banyak mengajukan pertanyaan saat pelaksanaan pemberian materi teori dan praktek saat kegiatan ini dilaksanakan. Hasil kegiatan ini juga meningkatkan keinginan antusias siswa-siswa SMAIT Daarul Ilmi Bandar Lampung untuk mengaplikasikan penggunaan pompa ini untuk membantu irigasi pertanian mereka dan juga akan menyebar luaskan informasi teknologi pompa tanpa motor ini bagi masyarakat di sekitar tempat tinggal mereka.
Forecasting the unemployment rate in West Java Province using VARX and SVR methods Kusuma Wardani, Yuniar; Sugiman
Journal of Natural Sciences and Mathematics Research Vol. 11 No. 2 (2025): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jnsmr.v11i2.27602

Abstract

This study discusses the forecasting of the Open Unemployment Rate (OUR) in West Java Province using two time series approaches: Vector Autoregressive with Exogenous variables (VARX) and Support Vector Regression (SVR). The dataset consists of monthly observations from 2018 to 2023, including variables such as OUR, the Labor Force Participation Rate (LFPR), Gross Regional Domestic Product (GRDP), and the Human Development Index (HDI). Based on the optimal lag selection using the AIC, the VARX model produced the best lag configuration of (5,2), consisting of five lags for endogenous variables and two for exogenous variables. Meanwhile, the SVR model was developed through Grid Search to find the best parameter combination, resulting in a linear kernel with  and . The evaluation results showed that the SVR model performed better than VARX, with MSE, RMSE, and MAPE values of 0.24, 0.49, and 6%, respectively, lower than those of the VARX model, which reached 0.68, 0.82, and 8.4%. SVR was selected as the best model and used to forecast the OUR until the end of 2025. The forecast results indicated a spike in OUR at the beginning of 2024 at 8.52%, followed by a declining trend that continues and stabilizes in the range of 7.96%-8.12% by the end of 2025. In conclusion, SVR outperforms VARX in predictive accuracy, while VARX remains useful for analyzing inter-variable relationships.
Potensi Guru Matematika SMP Mengembangkan LKS Terintegrasi Evaluasi Digitalnya untuk Meningkatkan Kreativitas Matematis Siswa Pujiastuti, Emi; Sugiman; Sugiharti, Endang; Sungkowo, Nanang
PYTHAGORAS Jurnal Matematika dan Pendidikan Matematika Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics Education, Faculty of Mathematics and Natural Sciences, UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/pythagoras.v20i1.90280

Abstract

Perkembangan teknologi pendidikan mendorong perlunya inovasi dalam pembelajaran matematika, salah satunya melalui digitalisasi Lembar Kerja Siswa (LKS) yang terintegrasi dengan evaluasinya untuk mendukung Kompetensi Kreativitas Matematis. Penelitian ini bertujuan memperoleh gambaran kemampuan guru matematika SMP di wilayah eks-Karesidenan Semarang dalam melakukan digitalisasi LKS tersebut, sekaligus menilai kompetensi kreativitas matematis siswa selama implementasinya. Penelitian menggunakan metode campuran dengan pendekatan kuantitatif dan kualitatif. Sampel terdiri atas 20 guru matematika, enam di antaranya diwawancarai untuk pendalaman kualitatif. Analisis kuantitatif dilakukan menggunakan uji-t berbantuan SPSS, sedangkan analisis kualitatif melalui reduksi data, penyajian data, interpretasi, dan penarikan kesimpulan. Hasil menunjukkan rata-rata kemampuan guru sebesar 87,98 dan penerimaan positif terhadap digitalisasi LKS sebagai inovasi pembelajaran. Kompetensi kreativitas matematis siswa dari dua SMP menunjukkan nilai rata-rata 85,44 dan 83,00 setelah implementasi. Kendala utama mencakup keterbatasan jaringan Wi-Fi dan kebutuhan kuota internet. Temuan ini menegaskan bahwa digitalisasi LKS efektif mendukung kreativitas matematis siswa serta layak diterapkan lebih luas, dengan dukungan pelatihan guru dan penguatan infrastruktur teknologi.
Students Perspective on How to Construct  Local Cultural-Based Ethnomathematics Problem Solving Dwi Erna Novianti; Zaenuri; Wardono; Sugiman
Kreano, Jurnal Matematika Kreatif-Inovatif Vol. 16 No. 2 (2025): Kreano, Jurnal Matematika Kreatif-Inovatif
Publisher : UNNES JOURNAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kreano.v16i2.34069

Abstract

Current mathematics learning shows that problem solving often remain procedural and are not closely connected to local cultural contexts. Students generally tend to seek answers directly without going through systematic stages of problem understanding and strategy planning. The purpose of this study is to analyze the problem-solving ability of a question in the social and cultural context of local wisdom in Bojonegoro Regency. The current study was qualitative descriptive through problem-solving tests and interviews in collecting the data. The test results are then analyzed and described in relation to their problem-solving ability following Polya's steps. The respondents of this study were 6th-semester students in which they were selected using a purposive sampling technique. Two subjects were selected, namely ST (subjects chategorized with high ability) and SR (subjects with low ability). The results of the study showed that the two subject  had different ways in solving the problems in a question, where ST has structured ways in solving problems compared to SR who using Polya's steps. Another finding was that students found non-mathematical information beyond the mathematical information related to the problem. This non-mathematical information refers to the stories related to local cultural wisdom that inherent in the problem. It makes learning more meaningful and provides the students with new experiences. Contextual learning that incorporated ethnomathematics elements that acts as a bridge for the students in understanding interconnection among mathematics and their daily lives. This process  comes regarding the respect for cultural diversification, especially to empower the students in the area of cognitive, social, emotional, and political. Through ethnomathematics approach, students' understanding of mathematical concepts can be reconstructed effectively. Based on these findings, further research need to be conducted regarding to the develop other indicators of problem solving. Abstrak Pembelajaran matematika saat ini menunjukkan bahwa proses pemecahan masalah masih sering bersifat prosedural dan terlepas dari konteks budaya lokal. Sebagian besar cenderung langsung mencari jawaban tanpa melalui tahapan pemahaman masalah dan perencanaan strategi secara sistematis. Tujuan dari penelitian ini adalah untuk melakukan analisis kemampuan pemecahan masalah pada soal dalam konteks sosial dan budaya kearifan lokal yang ada di kabupaten Bojonegoro. Penelitian ini merupakan penelitian deskriptif kualitatif dengan teknik pengumpulan data menggunakan tes pemecahan masalah dan wawancara. Hasil tes tersebut kemudian dianalisis dan dideskripsikan terkait dengan kemampuan pemecahan masalah dengan menggunakan langkah Polya. Subjek penelitian ini adalah mahasiswa semester 6 yang dipilih dengan menggunakan teknik purposive sampling. Terpilih dua subjek yaitu ST (subjek dengan kemampuan tinggi) dan SR (subjek dengan kemampuan rendah). Hasil penelitian menunjukkan bahwa kedua subjek memiliki perbedaan dalam menyelesaikan masalah, dimana subjek ST lebih terstruktur dalam menyelesaikan masalah dibandingkan dengan subjek SR dengan menggunakan langkah Polya. Selain itu, temuan penelitian yang lain adalah mahasiswa menemukan informasi non matematis di luar informasi matematis yang berkaitan dengan soal. Informasi non matematis yang dimaksudkan adalah cerita terkait budaya kearifan lokal yang ada pada permasalahan permaslahan. Hal ini menjadikan pembelajaran lebih bermakna dan memberikan pengalaman baru kepada mahasiswa. Pembelajaran kontekstual yang menggabungkan unsur etnomatematika berperan sebagai penghubung bagi siswa dalam memahami keterkaitan antara matematika dan kehidupan sehari-hari. Proses ini dilandasi oleh penghargaan terhadap keberagaman latar belakang budaya, yang bertujuan untuk memberdayakan mahasiswa secara kognitif, sosial, emosional, dan politis. Melalui pendekatan etnomatematika, pemahaman mahasiswa terhadap konsep-konsep matematika dapat dikonstruksi ulang dengan cara yang lebih efektif. Berdasarkan temuan ini, maka penelitian selanjutnya yag dapt dilakakan adalah mengembangkan indkator pemecahan masalah.
Gaya Kepemimpinan dan Motivasi Kerja Pegawai dalam Pelayanan kepada Masyarakat di Puskesmas Gamping I Sleman Yogyakarta: Leadership Style and Work Motivation of Employees in Community Services at the Gamping I Health Center in Sleman Yogyakarta Siska Carolina; Sugiman; Sunaryo
Media Publikasi Promosi Kesehatan Indonesia (MPPKI) Vol. 6 No. 8 (2023): August 2023
Publisher : Fakultas Kesehatan Masyarakat, Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/mppki.v6i8.3471

Abstract

Latar belakang: Gaya kepemimpinan adalah suatu proses untuk menggerakkan orang lain dengan memimpin, membimbing dan mempengaruhi orang lain untuk melakukan sesuatu agar mencapai hasil yang diharapkan. Motivasi kerja adalah suatu faktor yang mendorong seseorang untuk melakukan suatu aktivitas tertentu, karena itu motivasi dapat diartikan sebagai faktor pendorong perilaku seseorang. Kepala Puskesmas Gamping I Sleman dalam kepemimpinannya menunjukkan sikap yang baik terhadap pegawainya. Kepala puskesmas juga melakukan komunikasi yang baik dengan pegawainya dan selalu melibatkan partisipasi pegawai dalam pengambilan keputusan. Tujuan: Penelitian ini bertujuan untuk mengetahui hubungan gaya kepemimpinan dengan motivasi kerja pegawai di Puskesmas Gamping I Sleman Yogyakarta. Metode: Penelitian ini dilakukan di Puskesmas Gamping I Sleman. Jenis penelitian menggunakan metode kuantitatif dengan pendekatan cross sectional. Sampel diambil dengan metode total sampling dengan jumlah sampel sebanyak 52 responden. Analisis data menggunakan uji spearman rank correlations. Hasil: Hasil penelitian menemukan Gaya kepemimpinan Kepala Puskesmas Gamping I Sleman berada pada kategori baik sebesar 93,8%. Motivasi kerja pegawai di Puskesmas Gamping I Sleman berada pada kategori baik sebesar 97,9%. Hasil analisis bivariat menggunakan uji Spearman rank correlations menunjukkan bahwa ada hubungan yang kuat antara gaya kepemimpinan dengan motivasi kerja pegawai di Puskesmas Gamping I Sleman dengan nilai Sig.(2-tailed) yang diperoleh sebesar 0,000 dan nilai koefisien korelasi yaitu 0,696. Kesimpulan: Ada hubungan antara gaya kepemimpinan dengan motivasi kerja pegawai di Puskesmas Gamping I Sleman Yogyakarta.
Implementing STEM-Based Mathematics Learning in Indonesian High Schools: Teachers’ Understanding, Challenges, and Supporting Factors Kurniawan, Indra; Sugiman; Syukrul Hamdi
Riemann: Research of Mathematics and Mathematics Education Vol. 8 No. 1 (2026): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/riemann.v8i1.176

Abstract

STEM is a learning approach that can enhance students' mathematical skills by linking mathematics with science, technology, and engineering, thereby increasing students’ motivation. This study analyzed teachers' understanding and the challenges they face in implementing STEM-based mathematics instruction. A phenomenology-informed qualitative study explored the experiences of 12 mathematics teachers across six provinces in Indonesia: West Java, Central Java, East Java, Yogyakarta, West Sumatra, and West Nusa Tenggara. Data were collected through online interviews and analyzed using the Bogdan & Biklen technique, including data reduction, axial coding, theme determination, and conclusion and interpretation. The results indicate that teachers view STEM-based mathematics as a means to connect subjects, develop critical 21st-century skills, and apply knowledge in real-life contexts. They implement STEM through project-based, interdisciplinary lessons that increase student engagement, despite challenges such as time constraints, curriculum demands, and differences in student readiness. Effective STEM instruction relies on professional development, school support, and sufficient resources to enable teachers to integrate STEM concepts confidently into mathematics teaching. These findings highlight the importance of providing structured guidance, adequate teaching materials, and policy support to enhance teachers’ capacity to deliver STEM-based mathematics effectively, bridging theory and practice for meaningful student learning.
Effect Of Augmented Reality-Based Textbook On Geometry Spatial Ability Of Deaf Students: A-B-A SSR Puspitasari, Lia Arum; Sugiman
Riemann: Research of Mathematics and Mathematics Education Vol. 8 No. 1 (2026): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/riemann.v8i1.196

Abstract

Mathematical spatial ability plays a crucial role in geometry learning, particularly in visualizing and manipulating three-dimensional objects. However, students with hearing impairment often face difficulties in developing spatial reasoning due to limited access to dynamic and interactive visual learning media, which can hinder their overall performance in geometry and related subjects. Although Augmented Reality (AR) has been widely implemented in mathematics education, empirical evidence on its effectiveness in improving spatial ability among deaf students, particularly using a Single Subject Research (SSR) design, remains limited. This study aims to examine the effect of an AR-based mathematics textbook on the mathematical spatial ability of three deaf students at a special senior high school (SMALB). A mixed-methods embedded design was employed, with quantitative data collected using a Single Subject Research (A1–B–A2) model and qualitative data obtained from observations, interviews, and questionnaires to explore students’ learning experiences. Quantitative data were analyzed using visual and quantitative techniques in a single-subject research design. The findings indicate consistent improvement during the intervention phase, supported by positive trend direction, clear level changes, immediacy of effect, and 0% data overlap between baseline and intervention across subjects. These results provide evidence of the effectiveness of AR-based mathematics textbooks in improving and sustaining mathematical spatial ability within the observed cases of deaf students in geometry learning.
KARAKTERISASI KEKUATAN GESER DAN STRUKTUR MIKRO HASIL SPOT WELDING PELAT BAJA KARBON RENDAH: CHARACTERIZATION OF SHEAR STRENGTH AND MICRO STRUCTURE OF SPOT WELDED RESULTS OF LOW CARBON STEEL PLATES Paryanto Dwi Setyawan; I Made Suniartha; Sugiman; Sinarep
Energy, Materials and Product Design Vol. 3 No. 2 (2024): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin dan Industri, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Spot welding is a joining method that utilizes thermal energy generated by the resistance of electric current. Research was conducted to determine the effect of plate thickness, current and welding time on the characteristics of spot welding results. Spot welding was performed on low carbon steel plates of 0.8 mm, 1.5 mm and 1.8 mm thickness with current (50, 60, 70, 80 amperes) and welding time (10, 15, 20 seconds). Characterization of the spot welds was done by shear test (ASTM D1002-10) and observation of macro and micro structure (ASTM E3-11) and failure surface of the specimens. From the research conducted, it is known that the average shear strength increases with decreasing plate thickness, increasing welding current and decreasing welding time. The highest average shear strength of 502,772 N/mm2 was obtained with a plate thickness of 0.8 mm, a welding current of 70 A, and a welding time of 10 seconds. For thin plates, most of the shear test specimens failed in the area of the heat affected zone, while for thick plates, most of the shear test specimens failed in the area of the nugget spot weld.
Co-Authors Ahmad Yonanda Ahmad, Hilton Aminah, Nursaodah Amrul Aoyama, Kazuhiro Arief Agoestanto Ariyadi Wijaya Aulia, Aulia Binti Kurniawati Budi Waluya, Stevanus Darmaesti David Sinaga Deni Kurniawan Devi, Natalia Chyntia Dwi Catur, Agus Dwi Erna Novianti Dwi Setyawan Emi Pujiastuti Endang Sugiharti, Endang Handoko, Hendri Heri Retnawati Hidayat, Aulia Almas Agustin I Made Suniartha I Nyoman Santiawan Indra Kurniawan Iwan Junaedi Juana, Nadya Amalia Kaswoto, Junet Kusuma Wardani, Yuniar M. Irsyad Mohammad Asikin Nila Ubaidah Noven Setyawan, Aji Nurintya, Fairuz Hanan Paryanto Dwi Setyawan Puji Nugraheni Puspitasari, Lia Arum Ramadani, Tri Topan Riawan Yudi Purwoko Scolastika Mariani Setyaningsih Sinaga, Jorfri Boike Sinarep Siska Carolina Siti Nurhidayati Sunaryo Sungkowo, Nanang Suniartha, I Made Syukrul Hamdi Vaher, Kristina Wahyu Setyaningrum Wardono Yuni Frazwanti Zaenuri