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All Journal Jurnal Pendidikan Matematika dan IPA Kreano, Jurnal Matematika Kreatif-Inovatif P2M STKIP Siliwangi Al-Jabar : Jurnal Pendidikan Matematika JOHME: Journal of Holistic Mathematics Education Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Martabe : Jurnal Pengabdian Kepada Masyarakat AXIOM : Jurnal Pendidikan dan Matematika Jurnal PTK dan Pendidikan MATH-EDU: Jurnal Ilmu Pendidikan Matematika Smart Society: Community Service and Empowerment Journal IndoMath: Indonesia Mathematics Education Kreativasi: Journal of Community Empowerment Hexagon: Jurnal Ilmu dan Pendidikan Matematika PADIMAS: Jurnal Pengabdian Masyarakat Media Pendidikan Matematika
Hijriani, Lailin
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Pelatihan Penggunaan Aplikasi Geogebra bagi Siswa sebagai Sarana Pembelajaran Matematika : Pelatihan Penggunaan Aplikasi Geogebra bagi Siswa sebagai Sarana Pembelajaran Matematika Hijriani, Lailin; Simarmata, Justin Eduardo; Nifu, Martha Marsella; Venidora Solo, Maria Fransiska
Kreativasi : Journal of Community Empowerment Vol. 4 No. 2 (2025): Vol.4 No. 2, 2025 :September 2025 (IN PRESS)
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/kreativasi.v4i2.40192

Abstract

Every concept in mathematics is related to one another. In addition, a concept can be a prerequisite for another concept. Mastery of a concept is needed to learn other concepts. One of the materials that is an important foundation in mathematics is the linear equation. The material on linear equations is the basis for understanding more advanced mathematical concepts, such as geometry, statistics, and calculus. Therefore, a strong understanding of this material is very important for the junior high school level. Referring to information from subject teachers and students in the mathematics subject of linear equations for class VIII A, St. Aloysius Catholic Junior High School Niki-Niki explained that there are still many students in class VIII A who have learning outcomes that are below the criteria set by the school. So a solution is needed to solve the problems being experienced, one of which can be done is to carry out community service, namely providing training in the use of the Geogebra application which can significantly help students build an understanding of the concept of linear equations. Keywords : Instructional Media, Geogebra Application
Utilization of Using Secondhands Materials as A Learning Media in Understanding Improving of Building Space Materials in Class V of Elementary School Students Simarmata, Justin Eduardo; Hijriani, Lailin; Bantaika, Aris; Kehi, Sefrinus; Bana, Marten Luter; Sanam, Thofilus
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2021): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (424.147 KB) | DOI: 10.32734/abdimastalenta.v6i2.6307

Abstract

The aims of this community service activity is to improve students' learning ability in understanding the material of space building by utilizing secondhands materials as a learning media. Furthermore, the implementation background of this service is to improve students' reasoning power through the activity to familiarize students to solve building space problems concretely through using secondhand materials that are used as learning media. This activity consists of three steps starting with a field assessment, an implementation step and finally an evaluation step. In the field exploration step, the servant determines the activity participants, which is devoted to Fifth class of elementary school students, does administrative preparation, material questions preparation and then prepares a schedule. The second step is the implementation step in the form of a cursory exposure regarding the use of secondhand materials that can be used as a learning media for space building materials, then providing samples of space building questions for students to work on and questions discussion. The last step is the evaluation step in the form of evaluation toward activity implementation that have been compiled based on each of the tasks that have been given. Based on the activity that have been carried out, it can be concluded that this training activity increases students 'knowledge of the space building concept in a concretely and increases students' skills in working on tests related to space building. In addition, this training is to motivate students to be more active in mathematics learning.
IDENTIFIKASI KEMAMPUAN LITERASI NUMERASI MELALUI INSTRUMEN ASESMEN KOMPETENSI MINIMUM PADA SISWA SMA KELAS XI SMAS WARTA BAKTI KEFAMENANU [IDENTIFICATION OF THE NUMERICAL LITERACY ABILITY OF GRADE 11 STUDENTS AT WARTA BAKTI KEFAMENANU HIGH SCHOOL USING THE MINIMUM COMPETENCY ASSESSMENT INSTRUMENT] Siahaan, Meiva Marthaulina Lestari; Hijriani, Lailin; Toni, Albertus
JOHME: Journal of Holistic Mathematics Education Vol. 6 No. 2 (2022): DECEMBER
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/johme.v6i2.5751

Abstract

One of the benchmarks of individual quality is seen in numeracy literacy skills. The purpose of this study was to identify the numeracy literacy skills of grade 11 students at Warta Bakti Kefamenanu High School, Nusa Tenggara Timur, in solving numeracy literacy problems with the minimum competency assessment (MCA) instrument in integral and domain algebra. This research was descriptive qualitative. This research technique was carried out with a test in the form of MCA, identifying the variations of errors made, identifying them in the types of errors, and mapping them to numeracy literacy indicators. Instrument items were taken from previous research and modified and content validity was done. The result of data analysis shows that participants who had principal errors met the numeracy literacy indicators item 1 and item 2, participants who had operating errors met the numeracy literacy indicator item 1, and participants who had conceptual errors did not meet all numeracy literacy indicators.BAHASA INDONESIA ABSTRACT: Salah satu tolak ukur kualitas individu dilihat dari kemampuan literasi numerasi. Tujuan penelitian ini adalah mengidentifikasi kemampuan literasi numerasi siswa SMA Kelas XI SMAS Warta Bakti Kefamenanu, Nusa Tenggara Timur dalam menyelesaikan masalah literasi numerasi model instrumen asesmen kompetensi minimum (AKM) pada domain aljabar topik integral. Jenis penelitian ini adalah deskriptif kualitatif. Teknik penelitian ini dilakukan dengan tes berbentuk AKM, mengidentifikasi variasi kesalahan yang dilakukan, mengidentifikasinya ke dalam jenis/tipe kesalahan, dan memetakan pada indikator literasi numerasi. Untuk butir instrumen, diambil dari penelitian sebelumnya dan dimodifikasi kemudian dilakukan proses validitas isi. Hasil dari penelitian ini adalah partisipan yang memiliki kesalahan prinsip memenuhi indikator literasi numerasi butir 1 dan butir 2, partisipan yang memiliki kesalahan operasi memenuhi indikator literasi numerasi butir 1, dan partisipan yang memiliki kesalahan konsep tidak memenuhi semua indikator literasi numerasi.
REPRESENTASI MATEMATIS DAN KEMAMPUAN MATEMATIKA SISWA SMP DITINJAU DARI TAKSONOMI BLOOM Hijriani, Lailin; Rahardjo, Swasono; Rahardi, Rustanto
AXIOM : Jurnal Pendidikan dan Matematika Vol 11, No 1 (2022)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/axiom.v11i1.9340

Abstract

Representasi matematis dibutuhkan untuk menyajikan ide-ide matematika. Kemampuan matematika siswa dapat dilihat dari bagaimana siswa merepresentasikan gagasannya atas suatu masalah matematis. Representasi yang digunakan siswa akan berbeda dengan siswa lainnya. Tujuan penelitian ini adalah untuk melihat representasi matematis dan kemampuan matematika siswa ditinjau dari Taksonomi Bloom. Metode yang digunakan dalam penelitian ini deskriptif kualitatif yang bertujuan untuk mendeskripsikan Representasi Matematis dan Kemampuan Matematika Siswa SMP ditinjau dari Taksonomi Bloom. Instrumen dalam penelitian ini terbagi menjadi dua yaitu instrumen utama yaitu peneliti sendiri dan instrumen pendukung yaitu lembar tes representasi matematis, lembar tes taksonomi Bloom, dan wawancara. Hasil menunjukkan bahwa secara keseluruhan kemampuan subjek dalam menyelesaikan masalah sistem persamaan linear dua variabel berbeda-beda. Hal ini terlihat dari masih terdapatnya proses penyelesaian yang belum terjawab dengan benar, meskipun representasi yang digunakan sudah tepat tetapi terdapat beberapa soal yang belum terjawab dengan benar. Sedangkan untuk kemampuan matematika yang ditinjau dari level Taksonomi Bloom, belum ada subjek yang mampu menyelesaikan soal level satu sampai enam secara berturut-turut dengan benar.AbstractMathematical representations are needed to present mathematical ideas. Students' mathematical ability can be seen in how students represent their ideas on a mathematical problem. The representation used by students will be different from other students. This study aims to see the mathematical representation and mathematical ability of students based on Bloom's Taxonomy. A descriptive qualitative method was used to describe the Mathematical Representation and Mathematical Ability of Junior High School Students based on Bloom's Taxonomy. In this study, the instruments were divided into two, namely the main instrument (the researcher himself) and the supporting instruments, namely the mathematical representation test, Bloom's taxonomy test, and interviews. The results show that the overall ability of students to solve the problem of linear equations of two variables is different. This can be seen in the process of solving the mathematical problems which have not been answered correctly. Although the representation is correct, several questions have not been answered correctly. As for the mathematical ability in terms of Bloom's Taxonomy level, no subject has been able to solve level one to six questions in a row correctly.
Cognitive Development of Mathematics Education Students based on Piaget's Theory in terms of Gender Differences Laja, Yosepha Patricia Wua; Hijriani, Lailin
Kreano, Jurnal Matematika Kreatif-Inovatif Vol 13, No 1 (2022): Kreano, Jurnal Matematika Kreatif-Inovatif
Publisher : Mathematics Dept, Math. and Science Faculty, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kreano.v13i1.31731

Abstract

This study aims to understand the cognitive development of mathematics education students based on Piaget's theory in terms of gender differences. This research method is descriptive quantitative research with the research subjects being students of mathematics education at Timor Universities. Students' cognitive development was measured using the Logical Operations Test (LOT), which consisted of 14 numbers. LOT questions are given to students, the results are analyzed and described. The results showed that the cognitive development stage for females was 19.18% in the initial concrete stage, 36.99% in the final concrete stage, 13.70% in the initial formal stage and 1.37% in the final formal stage. Male at 9.59% in the initial concrete stage, 6.85% in the final concrete stage, 9.59% in the initial formal stage and 2.74% in the final formal stage. Meanwhile, students' understanding based on seven logical operations is in low understanding for each type.Penelitian ini bertujuan untuk  mengetahui perkembangan kognitif mahasiswa pendidikan matematika berdasarkan teori Piaget ditinjau dari perbedaan jenis kelamin. Metode penelitian ini adalah penelitian deskriptif kuantitatif dengan subjek penelitian adalah mahasiswa pendidikan matematika Universitas Timor. Perkembangan kognitif mahasiswa diukur dengan menggunakan Tes Operasi Logis (TOL) yang berjumlah 14 nomor. Soal TOL diberikan kepada mahasiswa, hasilnya dianalisis dan dideskripsikan. Hasil penelitian menunjukkan bahwa tahap perkembangan kognitif sebesar 19,18% tahap konkret awal, 36,99 % tahap konkret akhir, 13,70% tahap formal awal dan 1,37% tahap formal akhir bagi mahasiswa perempuan. Sementara hasil pemetaan tahap perkembangan kognitif sebesar 9,59% tahap konkret awal, 6,85 % tahap konkret akhir, 9,59% tahap formal awal dan 2,74% tahap formal akhir bagi mahasiswa laki-laki. Sementara itu pemahaman mahasiswa berdasarkan 7 operasi logis berada dalam pemahaman rendah untuk masing-masing tipe. 
SOSIALISASI PENGERJAAN SOAL UTBK DENGAN TEKNIK MATH MAGIC DI SMA NEGERI PERBATASAN KEFAMENANU Simarmata, Justin Eduardo; Hijriani, Lailin; Wua Laja, Yosepha Patricia
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 4, No 2 (2021): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v4i2.455-461

Abstract

The purpose of this community service activity is to provide socialization on the work of UTBK with math magic techniques in SMAN 1 and SMAN 2 Kefamenanu. Furthermore, the background of this socialization is to improve the students' reasoning ability through familiarizing themselves with students solving non-routine problems found during the implementation of UTBK, especially in mathematics. This community service was carried out from January to March 2020 with 40 participants. This activity consists of three stages starting with the assessment of the field, the implementation phase and finally the evaluation phase. In the field assessment stage, the servant determines the participants of the socialization, which is specifically for high school students of class xii, prepares administration, prepares materials and UTBK questions and then prepares a schedule. The second stage is the implementation phase in the form of a brief exposure to the UTBK, then giving samples of the UTBK questions for students to work on and scribing questions. The last stage is the evaluation stage in the form of an evaluation of the implementation of activities that have been arranged based on each task that has been given. Based on the socialization activities that have been carried out it can be concluded that these training activities increase students' knowledge about UTBK and add student skills in working on math UTBK questions . In addition, this training motivates students to be more active in learning mathematics and to be more mature in preparing for the upcoming UTBK.
Pengembangan Lembar Kerja Siswa Materi SPLDV untuk Meningkatkan Hasil Belajar Siswa Melalui Pendekatan Matematika Realistik Taniu, Deni; Hijriani, Lailin; Kehi, Yohanes Jefrianus; Siahaan, Meiva Marthaulina Lestari; Fitriani
Media Pendidikan Matematika Vol. 13 No. 2 (2025): J-MPM
Publisher : Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/mpm.v13i2.16740

Abstract

This research is motivated by the lack of worksheets development (LKS) at school based on the Realistic Mathematics Approach (RMA), which has resulted in low student mathematical abilities, especially in solving system of linear equations in two variables. This research aims to produce valid, practical, and effective Student Worksheets (LKS) based on the Realistic Mathematics Approach (RMA) for algebra. The research aimed to improve students' mathematical abilities, which will impact student learning outcomes. The research type is research and development (R&D) using the 4-D model. The target population of this study was 20 students of class VIIIA at Junior High School Neonbat. The instruments used were expert validation sheets, student response questionnaire sheets, and pretest and posttest questions. The results of the study showed that the quality of the student worksheets met the validity criteria, with an average value of 84.78% in the very valid category. The results of the LKS practicality questionnaire showed an average score of 90.6% in the very practical category. While in terms of effectiveness, it met the effective criteria. The average individual score for the pretest results was 24.5. However, it increased after using the student worksheet as indicated by the posttest results with an average value of 79.5. The percentage of classical completion based on the posttest results was 80%, which is included in the effective category. So that, the student worksheet for algebra material through realistic mathematics approach met the criteria of valid, practical, and effective.
PELATIHAN APLIKASI RSHINY SEBAGAI MEDIA INTERAKTIF DALAM PEMBELAJARAN MATEMATIKA BAGI SISWA SMA NEGERI INSANA TENGAH: TRAINING ON THE UTILIZATION OF RSHINY APPLICATIONS AS INTERACTIVE MEDIA IN MATHEMATICS LEARNING AT SMA NEGERI INSANA TENGAH Simarmata, Justin Eduardo; Purnomo, Miko; Chrisinta, Debora; Hijriani, Lailin
PADIMAS Jurnal Pengabdian Masyarakat Vol. 4 No. 02 (2025): Padimas (Jurnal Pengabdian Masyarakat)
Publisher : PADIMAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32665/padimas.v4i02.5657

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan kualitas pembelajaran matematika di SMA Negeri Insana Tengah, sekolah yang berada di wilayah perbatasan, melalui pemanfaatan teknologi RShiny sebagai media pembelajaran interaktif. Kegiatan ini memberikan manfaat langsung bagi mitra sekolah dalam bentuk peningkatan pemahaman konsep matematika siswa, penguatan motivasi belajar, serta tersedianya sumber belajar digital yang inovatif dan berkelanjutan. Peserta kegiatan terdiri atas 32 siswa kelas X yang mengikuti pelatihan dalam dua kali pertemuan di laboratorium komputer. Metode pelaksanaan meliputi identifikasi kebutuhan siswa, pengembangan modul interaktif berbasis RShiny, implementasi pembelajaran, serta evaluasi hasil belajar. Hasil kegiatan menunjukkan adanya peningkatan pemahaman konsep matematika siswa yang ditunjukkan melalui perbandingan hasil pretes dan posttes, serta peningkatan keterlibatan aktif siswa selama proses pembelajaran. Selain berdampak pada peningkatan kualitas proses dan hasil belajar, program ini juga memperkuat kapasitas sekolah mitra dalam mengintegrasikan teknologi pembelajaran interaktif sebagai upaya peningkatan mutu pendidikan di wilayah perbatasan.
Review of Critical Thinking Ability as an Indicator in Solving Mathematical Problems Based on Representation Hijriani, Lailin; Siahaan, Meiva Marthaulina Lestari; Simamarta, Justin Eduardo; Salsinha, Cecilia Novianti; Mone, Ferdinandus
IndoMath: Indonesia Mathematics Education Vol 9, No 1 (2026): Vol 9 No 1, February 2026
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/indomath.v9i1.183

Abstract

This study aims to describe student’s critical thinking ability in solving mathematical problems based on the type of representation used when solving the given problems. The study was conducted in 9th grade in junior high school in Kefamenanu, Timor Tengah Utara, NTT, Indonesia. Three respondents were selected from 28 students who were given a critical thinking ability test based on the completeness of their answers and then interviewed to clarify their answers. The instruments used in this study were test questions and interview guidelines. Test data obtained, has been analyzed based on Facione's critical thinking ability indicators which include interpretation, analysis, evaluation, inference, explanation, and self-regulation. The results showed that student with symbolic representation, fulfilled 4 indicators of critical thinking ability, namely interpretation, analysis, evaluation, and inference. Which means that symbolic representation tends to support deeper critical thinking indicators than visual or verbal. Where student with visual representation fulfilled the critical thinking skills indicators, namely analysis and evaluation. Meanwhile, student with verbal representation fulfilled 1 indicator, namely interpretation.
Analysis of Student Errors in Solving SPLDV Story Problems Based on Visual Learning Styles Luruk, Maria Fatima; Hijriani, Lailin; Kehi, Yohanes Jefrianus
MATH-EDU: Jurnal Ilmu Pendidikan Matematika Vol. 10 No. 3 (2025): MATH-EDU: Jurnal Ilmu Pendidikan Matematika
Publisher : Program Studi Pendidikan Matematika, Fakultas Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jipm.v10i3.10555

Abstract

This study aims to describe the types of errors and the factors that cause students' errors in solving SPLDV story problems from a visual learning style perspective. The type of research used is descriptive qualitative. The research subjects consisted of Class VIII at SMP Negeri 2 Malaka Barat, who were identified as having a visual learning style. The research instruments were essay tests on SPLDV word problems and interview guidelines. Students' errors were analyzed using Kastelan’s theory, which classifies errors into conceptual, procedural, and technical. The results showed that students with visual learning style still made various errors, including (1) conceptual errors, such as inability to construct mathematical models from word problems and misapplying elimination or substitution methods; (2) procedural errors, such as failing to write systematic solving steps and not completing problems until the final stage; (3) technical errors, such as miscalculations and mistakes in copying numbers or variabels. The causes of errors came from internal factors (lack of conceptual understanding, inaccuracy, and difficulty in translating verbal information into symbolic form) and external factors (teaching methods with minimal visualization, an unconducive learning environment, and limited solving time).  
Co-Authors Bana, Marten Luter Bantaika, Aris Cecilia Novianti Salsinha Chrisinta, Debora Deda, Yohanis Ndapa Farida Daniel Fitriani Gusti Firda Khairunnisa Kehi, Sefrinus Klau, Maria Fransineti Hoar Luruk, Maria Fatima Maifa, Talisadika Serrisanti Miko Purnomo Missa, Yeni mone, ferdinandus Nifu, Martha Marsela Nifu, Martha Marsella Qohar, Abd. Rustanto Rahardi Sanam, Thofilus Selestina Nahak Siahaan, Meiva Marthaulina Lestari Simamarta, Justin Eduardo Simarmata, Justin Eduardo Solo, Maria Fransiska Venidora Susiswo Swasono Rahardjo Talan, Nelciana Tampani, Margarita Taniu, Deni Toni, Albertus Trifosa Alnabe, Ayu Venidora Solo, Maria Fransiska Wua Laja, Yosepha Patricia Yohanes Jefrianus Kehi