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All Journal Jurnal Pembangunan Wilayah dan Kota UNM Geographic Journal Jurnal Pendidikan Matematika (JUDIKA EDUCATION) JURNAL SILOGISME : Kajian Ilmu Matematika dan Pembelajarannya Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya International Journal of Economics Development Research (IJEDR) Square : Journal of Mathematics and Mathematics Education 'A Jamiy: Jurnal Bahasa dan Sastra Arab Jurnal Penelitian Pendidikan Fisika Jurnal Pengabdian kepada Masyarakat Nusantara CENDEKIA : Jurnal Ilmu Pengetahuan Indonesian Journal of Business and Management JagoMIPA: Jurnal Pendidikan Matematika dan IPA Edu Sociata : Jurnal Pendidikan Sosiologi Bosowa Journal of Education Innovative: Journal Of Social Science Research Ranah Research : Journal of Multidisciplinary Research and Development Jurnal Sains Natural JME (Journal of Mathematics Education) ASHLITION JOURNAL: Ash-Shahabah English Literature, Linguistics & Education PESHUM Jurnal Penelitian Pendidikan Geografi
Tahir, Tahir
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ANALISIS KEMAMPUAN PEMAHAMAN KONSEP MATEMATIKA DAN MISKONSEPSI MATEMATIS SISWA SD NEGERI 1 LALOLAE tahir, tahir; Marniati, Marniati
Jurnal Silogisme : Kajian Ilmu Matematika dan Pembelajarannya Vol 6 No 2 (2021): Desember
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/silogisme.v6i2.4138

Abstract

Penelitian ini adalah penelitian deskriptif yang dilakukan dengan tujuan untuk melihat bagaimana kemampuan pemahaman konsep siswa dan miskonsepsinya dalam menyelesaikan soal cerita pada materi pecahan. Dengan siswa kelas V SD Negeri 1 Lalolae yang berjumlah 22 orang siswa menjadi subjek penelitian. Dari hasil penelitian yang dilakukan dapat disimpulkan bahwa sebanyak 45% dari 22 orang siswa SD Negeri 1 Lalolae memiliki kemampuan pemahaman konsep yang sangat rendah. Dengan rata-rata nilai kemapuan pemahaman konsep berada pada kategori rendah. Dimana mayoritas siswa lemah dalam indicator Mengaplikasikan konsep atau algoritma dalam pemecahan masalah. Selanjutnya siswa juga manyoritas masih mengalami miskonsepsi dengan 41% siswa berkategori rendah dan 55% siswa berkategori sedang hal ini menunjukkan bahwas siswa SD Negeri 1 Lalolae masih mengalami miskonsepsi. dari hasil analisis silang diperoleh bahwa siswa dengan kemampuan konsep sangat rendah juyga memiliki miskonsepsi yang kategori rendah atau mengalami miskonsepsi yang tinggi
Analysis of Grade X Students' Conceptual Understanding in Solving Problems on Exponential and Logarithmic Competency Tests Based on Apos Theory Ramadhan, Nur Ihsan; Chairuddin, Chairuddin; Tahir, Tahir
JME (Journal of Mathematics Education) Vol 10, No 2 (2025): JME (Jul - Dec)
Publisher : Universitas Sembilanbelas November Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31327/jme.v10i2.2545

Abstract

This study aims to determine the level of students' understanding of mathematical concepts in exponents and logarithms based on APOS theory at SMA Negeri 4 Binongko. This study uses a qualitative approach with a descriptive method. The research subjects consisted of three tenth-grade students selected based on high, medium, and low ability levels. Data were obtained through competency tests and in-depth interviews, then analyzed based on the four stages of the APOS theory, namely action, process, object, and schema. The results showed that students with high ability had reached the schema stage, students with medium ability were at the object stage, and students with low ability were at the process stage. This indicates that there are differences in the level of conceptual understanding among students according to their respective abilities. Thus, the application of the APOS theory proved to be effective in identifying and mapping students' mathematical understanding of exponents and logarithms. These findings indicate that the APOS theory can be used as a basis for designing learning that encourages the development of students' conceptual understanding in mathematics.
EXPLORING MATHEMATICS LEARNING PRACTICES AT SMA NEGERI 1 LALOLAE imelda, imelda; Tahir, Tahir; Chairuddin, Chairuddin; Karunia, Karunia
JME (Journal of Mathematics Education) Vol 10, No 2 (2025): JME (Jul - Dec)
Publisher : Universitas Sembilanbelas November Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31327/jme.v10i2.2535

Abstract

This study aims to analyze mathematics learning strategies at SMA Negeri 1 Lalolae by exploring teaching methods, learning media, and student responses to identify more effective strategies for improving learning quality. This study employed a qualitative descriptive approach with an exploratory design. Data were collected through classroom observations, interviews with mathematics teachers, and questionnaires completed by 80 students. The findings reveal that lecture and problem-solving methods are most preferred by students, whereas discussion and project-based approaches are still rarely applied. Visual media were found helpful in supporting understanding; however, the use of digital applications remained limited. Students generally responded positively to learning, although their active participation and conceptual understanding still need improvement. The study concludes that the application of varied and appropriate methods and media can foster active student engagement and improve motivation and understanding in learning mathematics.
Green Economy Transition Strategy in Regional Development, A Study of Energy Efficiency and Social Inclusion in Makassar Tahir, Tahir; Jumarding, Ahmad
International Journal of Economics Development Research (IJEDR) Vol. 6 No. 6 (2025): International Journal of Economics Development Research (IJEDR)
Publisher : Yayasan Riset dan Pengembangan Intelektual

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/ijedr.v6i6.9850

Abstract

The transition toward a green economy in urban areas requires the integration of energy efficiency and social inclusion as two fundamental pillars of sustainable development. Makassar City, as the economic center of Eastern Indonesia, is experiencing increasing energy consumption, environmental pressures, and widening social disparities, necessitating a well-directed transition strategy supported by empirical evidence. This study aims to analyze the conditions and challenges of energy efficiency, identify the level of social inclusion within green development programs, and formulate an integrative strategy that can be implemented by local governments. A qualitative approach was employed through in-depth interviews, observations, and document analysis involving various stakeholders, including government institutions, environmental NGOs, academics, and vulnerable community groups. The findings indicate that energy efficiency programs in Makassar remain in the early stages of implementation and are dominated by top-down approaches, thereby failing to generate substantial changes within household and MSME sectors. Social inclusion is also found to be limited, as evidenced by the lack of participation from vulnerable groups in the planning and evaluation processes of green development initiatives. Moreover, weak cross-sectoral coordination has resulted in energy policies and social policies operating independently, hindering the effectiveness of a comprehensive green economy transition. The study formulates an integrative strategy combining institutional strengthening, expanded access to energy-efficient technologies, enhanced community energy literacy, and reinforced participatory mechanisms as pathways toward a low-emission and socially equitable regional development framework. These findings are expected to provide substantive contributions to local energy policy formulation and enrich the scientific literature on urban green economy transitions in Indonesia.
Integrasi Pemetaan Digital dan Partisipatif untuk Analisis Spasial Temporal Perubahan Penggunaan Lahan Tahir, Tahir
Jurnal Penelitian Pendidikan Geografi Vol 11 No 1 (2026)
Publisher : Jurusan Pendidikan Geografi FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jppg.v11i1.789

Abstract

Digital technology-based mapping in development planning is often unable to capture the dynamics of land use change at the micro scale. Therefore, the integration of spatio-temporal participatory mapping with digital data through overlay analysis is important to produce more accurate, contextual, and inclusive land use change information. This study aims to 1) classify land use types in Lainea District, South Konawe Regency, and 2) analyze land use changes spatio-temporally from 2016 to 2025, to determine the direction of development based on mapping with the community. This study uses terrestrial survey methods and digital survey collaboration using remote sensing data from Landsat-8 and Landsat-9 images. The results show that in the period 2016 to 2025 there was a significant change of 1,411.28 ha. The largest decrease occurred in mixed dryland agricultural land which shrank by 583.85 ha (41.37%) of the total change, followed by swamp scrubland covering -13.84 ha. In contrast, there was a significant increase in rice fields, reaching 528.89 ha (37.45%), and secondary dryland forest, reaching 103.60 ha. Residential and mining areas also increased, although by relatively small percentages. Overall, this trend indicates a shift in land use from shrubland and mixed agriculture to more intensive uses such as rice fields and secondary forests.
ANALYSIS OF STUDENTS' ERRORS IN SOLVING MATHEMATICS PROBLEMS BASED ON THEIR CONCEPTUAL UNDERSTANDING Nisa, Fairun; Haidar, Irajuana; Tahir, Tahir
JME (Journal of Mathematics Education) Vol 10, No 1 (2025): JME
Publisher : Universitas Sembilanbelas November Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31327/jme.v10i1.2710

Abstract

This study aims to describe students' errors in solving mathematics problems based on their conceptual understanding. This research employed a descriptive qualitative approach involving 28 eighth-grade students from SMP Negeri 1 Latambaga. Data were collected using a conceptual understanding test, designed based on several indicators (classifying objects according to their properties, giving examples and non-examples of a concept, applying concepts algorithmically, and presenting concepts in various representative forms). Student errors were analyzed using Nolting's theory, which categorizes errors into careless, concept, application, and test procedure errors. The instrument was validated by mathematics education experts and teachers, and tested for item validity. After the test, four students representing different ability levels (high, medium, low, very low) were selected for interviews. The results showed that, in general, students' conceptual understanding was low. The most dominant errors were concept and application errors, while procedural and careless errors also appeared but less frequently. In conclusion, students' errors are primarily caused by weak conceptual understanding and a lack of systematic problem-solving abilities.
ANALYSIS OF STUDENTS DIFFICULTIES IN SOLVING MATHEMATICAL PROBLEMS BASED ON HIGHER ORDER THINKING SKILLS FOR JUNIOR HIGH SCHOOL STUDENTS Surlam, Ananda Eka Puspita; Chairuddin, Chairuddin; Tahir, Tahir
JME (Journal of Mathematics Education) Vol 10, No 1 (2025): JME
Publisher : Universitas Sembilanbelas November Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31327/jme.v10i1.2711

Abstract

Higher-order thinking skills (HOTS) are essential in fostering students' critical and creative problem-solving abilities, particularly in mathematics. This study aims to determine the level of difficulty students face in solving HOTS-based mathematics problems. This qualitative descriptive study was conducted at SMPN 1 Latambaga with 23 eighth-grade students (class VIII A) as participants. The instruments, comprising tests and interviews, were constructed based on three indicators of HOTS: analyzing, evaluating, and creating. From the participants, six students were selected to represent three ability levels: high, moderate, and low. Students in the high category met all HOTS indicators. Moderate-level students achieved analyzing and evaluating but struggled with the creating aspect. Low-level students were only able to analyze and faced difficulties in evaluating and creating solutions. Their challenges included misapplication of principles, procedural errors, and verbal misunderstandings of question instructions. The findings highlight the need for targeted strategies to enhance students' critical and creative thinking in solving contextual and open-ended mathematics problems.
KORELASI NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI) DAN TUTUPAN KANOPI PADA EKOSISTEM MANGROVE DI TELUK KENDARI Herman, Boi; Sawaludin, Sawaludin; Tahir, Tahir; Alfiyan, Arif Nur; Alfirman, Alfirman
CENDEKIA: Jurnal Ilmu Pengetahuan Vol. 6 No. 2 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/cendekia.v6i2.9045

Abstract

Mangrove ecosystems play a crucial role in maintaining coastal environmental stability, requiring accurate spatial information on their distribution, density, and canopy cover conditions. This study aims to assess the extent and spatial distribution of mangrove ecosystems, vegetation density levels, canopy cover conditions, and the relationship between Normalized Difference Vegetation Index (NDVI) values and mangrove canopy cover percentages in the coastal area of Kendari City. Mangrove distribution and density were analyzed using Sentinel-2A imagery through the NDVI approach, while canopy cover was measured using the Hemispherical Photography method processed with ImageJ software. Satellite imagery was obtained from the Copernicus platform, and a total of 33 sampling stations or plots were determined based on mangrove density classification criteria. The results indicate that the total mangrove area along the coast of Kendari City is approximately 275.67 hectares, distributed across eight sub-districts. NDVI analysis classified mangrove vegetation into three density categories: low density covering 30.69 ha, medium density covering 68.28 ha, and high density covering 176.70 ha. Mangrove canopy cover varied in accordance with vegetation density, ranging from 16.56% to a maximum of 88.08%. Correlation analysis revealed a very strong relationship between NDVI values and canopy cover percentage, with a correlation coefficient (r) of 0.93. These findings demonstrate that Sentinel-2A-derived NDVI is a reliable indicator for estimating mangrove canopy cover conditions in coastal environments. ABSTRAKEkosistem mangrove memiliki peran penting dalam menjaga keseimbangan ekologi pesisir, sehingga diperlukan informasi spasial yang akurat terkait sebaran, kerapatan, dan kondisi tutupan tajuknya. Penelitian ini bertujuan untuk menganalisis luas dan distribusi ekosistem mangrove, tingkat kerapatan vegetasi, kondisi tutupan kanopi, serta hubungan antara nilai Normalized Difference Vegetation Index (NDVI) dan persentase tutupan tajuk mangrove di wilayah pesisir Kota Kendari. Analisis kerapatan dan sebaran mangrove dilakukan menggunakan citra Sentinel-2A melalui pendekatan NDVI, sedangkan tutupan kanopi dianalisis menggunakan metode Hemispherical Photography yang diolah dengan perangkat lunak ImageJ. Data citra diperoleh dari laman Copernicus, kemudian ditentukan sebanyak 33 stasiun atau plot sampel berdasarkan klasifikasi tingkat kerapatan mangrove. Hasil penelitian menunjukkan bahwa total luasan mangrove di pesisir Kota Kendari mencapai sekitar 275,67 hektar yang tersebar di delapan kecamatan. Berdasarkan nilai NDVI, ekosistem mangrove diklasifikasikan ke dalam tiga tingkat kerapatan, yaitu kerapatan rendah seluas 30,69 ha, kerapatan sedang 68,28 ha, dan kerapatan tinggi 176,70 ha. Persentase tutupan tajuk mangrove bervariasi mengikuti tingkat kerapatan vegetasi, dengan nilai tertinggi sebesar 88,08% dan terendah 16,56%. Analisis korelasi menunjukkan hubungan yang sangat kuat antara nilai NDVI dan persentase tutupan kanopi dengan koefisien korelasi (r) sebesar 0,93. Temuan ini menegaskan bahwa NDVI citra Sentinel-2A dapat digunakan secara efektif untuk menduga kondisi tutupan kanopi mangrove di wilayah pesisir.
Integrasi Pemetaan Digital dan Partisipatif untuk Analisis Spasial Temporal Perubahan Penggunaan Lahan Tahir, Tahir
Jurnal Penelitian Pendidikan Geografi Vol 11 No 1 (2026)
Publisher : Jurusan Pendidikan Geografi FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jppg.v11i1.742

Abstract

Digital technology-based mapping in development planning is often unable to capture the dynamics of land use change at the micro scale. Therefore, the integration of spatio-temporal participatory mapping with digital data through overlay analysis is important to produce more accurate, contextual, and inclusive land use change information. This study aims to 1) classify land use types in Lainea District, South Konawe Regency, and 2) analyze land use changes spatio-temporally from 2016 to 2025, to determine the direction of development based on mapping with the community. This study uses terrestrial survey methods and digital survey collaboration using remote sensing data from Landsat-8 and Landsat-9 images. The results show that in the period 2016 to 2025 there was a significant change of 1,411.28 ha. The largest decrease occurred in mixed dryland agricultural land which shrank by 583.85 ha (41.37%) of the total change, followed by swamp scrubland covering -13.84 ha. In contrast, there was a significant increase in rice fields, reaching 528.89 ha (37.45%), and secondary dryland forest, reaching 103.60 ha. Residential and mining areas also increased, although by relatively small percentages. Overall, this trend indicates a shift in land use from shrubland and mixed agriculture to more intensive uses such as rice fields and secondary forests.
Komparasi Metode Indeks Spektral untuk Analisis Spasial Lahan Terbangun di Kota Kendari Nusriah, Ld. Asyravil Maolana; Nurgiantoro, Nurgiantoro; Fitriani, Fitriani; Tahir, Tahir; Sawaludin, Sawaludin; Alfirman, Alfirman
Jurnal Pembangunan Wilayah dan Kota Vol 22, No 1 (2026): JPWK Volume 22 No. 1 March 2026
Publisher : Universitas Diponegoro Publishing Group, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pwk.v22i1.78218

Abstract

Pengindraan jauh merupakan teknologi yang banyak dimanfaatkan dalam analisis spasial, khususnya untuk pemetaan lahan terbangun dengan menggunakan indeks spektral. Penelitian ini bertujuan untuk mengkomparasikan tiga indeks lahan terbangun dengan menggunakan citra Landsat 8 OLI/TIRS tahun 2023. Metode analisis yang digunakan untuk menganalisis lahan terbangun terdiri dari Urban Index (UI), Normalized Difference Built-Up Index (NDBI), dan Visible Red Near Infrared-Built Up Index (VrNIR-BI) yang memiliki perbedaan pada penggunaan saluran dan formulasi perhitungan, serta mengkorelasikan dengan Land Surface Temperature (LST).  Hasil penelitian menunjukkan indeks VrNIR-BI memiliki akurasi tertinggi dengan nilai kappa sebesar 96,59%, sedangkan NDBI memiliki korelasi tertinggi dengan LST dengan nilai R² sebesar 0,5729. Berdasarkan hasil tersebut,  VrNIR-BI direkomendasikan untuk analisis akurasi tinggi, sedangkan NDBI lebih sesuai untuk analisis terkait suhu permukaan. Sehingga dapat digunakan sebagai pengendalian perkembangan kawasan terbangun dalam pembangunan perkotaan
Co-Authors Adawiah, Rabiah Afina, Zahira Akbar, La Ode Juni Alfiandy Kamal Alfirman, Alfirman Alfiyan, Arif Nur ANDI WIJAYA Arinda, Shafira Aprilla Baharudin Baharudin Chairuddin Chairuddin Dahniar Dahniar Dandi, Dandi Daud Yusuf Daud, Attaillah Dinda, Putri Erfina, Erfina Fadillah, Ryan Fitriani Fitriani Hamsiah, Andi Hamsiah Hasan, Rahmat Herman, Boi Hidayati, Ully Husnaini, Nadia Irajuana Haidar Jumarding, Ahmad Karunia, Karunia Keisya, Nurul Lestari, Robby Jundi Lukman Samboteng & Rulinawaty Kasmad Maretik, Maretik Marniati Marniati, Marniati Mas'ud Muhammadiah Mega Fatimah Rosana Miswaty, Miswaty Ningsi, Fitri Nisa, Fairun Nurgiantoro, Nurgiantoro Nurhidayat Nurhidayat Nusriah, Ld. Asyravil Maolana Rafiuddin, Rafiuddin Rahmadani, Natasya Suci Rahman, Asri Ramadhan, Nur Ihsan Risnawati, Wa Ode Rosliana Eso Ruslan, Muhlis Samawi, Oscar Raihan Sarmila, Sarmila Sawaludin, Sawaludin Sri Mulyani Suci, Mimi Permani Sulistyawati Sulistyawati Surlam, Ananda Eka Puspita Syaddad, VirzqiZulviqar SYAIFUL BAHRI Takda, Amiruddin Treisna, Novita Warsidi Weti Anggriani