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All Journal AlphaMath: Journal of Mathematics Education Jurnal Elemen NUMERICAL (Jurnal Matematika dan Pendidikan Matematika) KALAMATIKA Jurnal Pendidikan Matematika Indonesian Journal of Science and Mathematics Education JMM (Jurnal Masyarakat Mandiri) Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Cendekia : Jurnal Pendidikan Matematika MAJU : Jurnal Ilmiah Pendidikan Matematika Range : Jurnal Pendidikan Matematika JUPIKA: JURNAL PENDIDIKAN MATEMATIKA Jurnal Pengabdian Masyarakat (ABDIRA) MATH-EDU: Jurnal Ilmu Pendidikan Matematika Mejuajua Smart Society: Community Service and Empowerment Journal International Journal of Trends in Mathematics Education Research (IJTMER)
Hijriani, Lailin
Department Of Mathematics Education, Universitas Timor, Kefamenanu, 85613
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Education Languange, Linguistic, Communication & Media Mathematics Nursing Public Health Social Sciences Other

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Media Development of “Kebun Phytagoras” for Learning Pythagoras Theorem Lailin Hijriani; Abd. Qohar
International Journal of Trends in Mathematics Education Research Vol 3, No 2 (2020)
Publisher : SAINTIS Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33122/ijtmer.v3i2.133

Abstract

The aim of this development research is to develop “Kebun Pythagoras” media which can be used in learning to help student to prove the truth of the Pythagorean Theorem. The development model used is the Plomp development model (2010). The development of “Kebun Pythagoras” media goes through three steps: initial research, development step, and assessment step. The results of evaluation data are suggestuins and research trial subjects’ assessments used as an input for developing the media. The results of data analysis obtained an overall average value of criteria 3.6 of 4.0 scale included valid category. The practicality result of media utilization with an overall average value of criteria 3.5 of 4.0 scale included practical category.
Analisis Kesalahan Siswa Dalam Menyelesaikan Soal Cerita Pada Materi Sistem Persamaan Linear Tiga Variabel Di SMA Negeri Insana Tengah Samuel Seran; Stanislaus Amsikan; Lailin Hijriani
MATH-EDU: Jurnal Ilmu Pendidikan Matematika Vol 8 No 2 (2023): 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.8.2.2023.98-104

Abstract

Tujuan dari penelitian ini adalah untuk menentukan persentase jenis kesalahan berdasarkan prosedur Kastolan, Menentukan faktor-faktor kesalahan siswa. Jenis penelitian yang digunakan deskriptif kualitatif. Penelitian ini dilaksanakan di SMA Negeri Insana Tengah pada semester genap tahun ajaran 2021/2022 dengan subjek penelitian berjumlah 22 siswa. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah tes tertulis, wawancara dan dokumentasi. Hasil penelitian menunjukkan bahwa kesalahan terbagi ke dalam tiga bagian yaitu kesalahan konseptual sebesar 23%, kesalahan prosedural sebesar 40%, dan kesalahan teknik sebesar 37%. Adapun kesalahan yang dilakukan sebagai berikut: 1)Kesalahan konseptual meliputi: adanya kesalahan dalam membuat model matematika, tidak membuat model matematika, dan tidak mampu menyelesaikan model matematika. 2) Kesalahan prosedural meliputi : tidak menuliskan apa yang diketahui dan ditanyakan, tidak membuat kesimpulam tidak menuliskan langkah-langkah penyelesaian 3)Kesalahan teknik meliputi: terdapat kesalahan dalam menentukan perhitungan dan terdapat perhitungan yang kurang tepat sehingga mempengaruhi hasil akhir. Faktor-faktor yang menyebabkan siswa melakukan kesalahan yaitu siswa kurang mengerti materi sistem persamaan linear tiga varibel, siswa tidak tahu langkah-langkah penyelesaian soal, dan kurang teliti dalam mengerjakan soal yang diberikan.
PENGARUH PEMBELAJARAN MATEMATIKA REALISTIK TERHADAP KEMAMPUAN BERPIKIR KREATIF SISWA Maria Brigita Niis Nana; Justin Eduardo Simarmata; Lailin Hijriani
JUPIKA: JURNAL PENDIDIKAN MATEMATIKA Vol. 7 No. 1 (2024): Volume 7 Nomor 1 Maret 2024
Publisher : Program Studi Pendidikan Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/jupika.v7i1.3742

Abstract

This research aims to determine the influence of a realistic mathematics learning approach on the creative thinking abilities of class VII students on the subject of Himpunan at SMP Negeri 1 Malaka Timur. The population size in this study is 81 students and the sample size of 18 students. The type of research used in this research is quasi-experimental research. The design used in this research is The One Group Pretest-Posttest Design, while the data collection technique uses the test method. The data analysis technique uses t-test statistics. The results show that students' creative thinking abilities using Realistic Mathematics Education (RME) obtained a significant value < 0.05, namely 0.001 < 0.05, so H1 is accepted and this means that the Realistic Mathematics Education learning approach influences students' creative thinking abilities.
Implementing of the Aptitude Treatment Interaction (ATI) Learning Model for Linear Equation Systems and Matrix Materials for Prospective Mathematics Education Teacher Students Lailin Hijriani; Meiva Marthaulina Lestari Siahaan; Gusti Firda Khairunnisa; Emily Johnson
RANGE: Jurnal Pendidikan Matematika Vol. 5 No. 2 (2024): Range Januari 2024
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.Vol5.Iss2.5046

Abstract

ABSTRACT This study aims to see the learning outcomes of prospective mathematics education teacher students after applying the Aptitude Treatment Interaction (ATI) learning model for linear equation systems and matrix. This study uses a quantitative descriptive approach with data collection techniques are test and documentation. Subjects were grouped into three categories, namely subjects with high mathematical abulity, medium, and low mathematical ability. The results showed that the application of the Aptitude Treatment Interaction (ATI) learning model gave a good response to learning outcomes with an average of 78.10 in the good category. This can be seen from the student learning outcomes as a whole, both students with high mathematical ability, medium, and low mathematical ability. So, it can be concluded after applying the Aptitude Treatment Interaction (ATI) learning model that the overall intake of students when viewed from their mathematical abilities does not cause a wide gap between them.
Penggunaan Puzzle Pythagoras sebagai Media Pembelajaran bagi Siswa SMPN Tublopo Hijriani, Lailin; Handayani, Rika; Lestari Siahaan, Meiva Marthaulina; Wua Laja, Yosepha Patricia; Naimnule, Maria; Seso Delvion, Eduardus Beo
Jurnal Pengabdian Masyarakat (ABDIRA) Vol 5, No 3 (2025): Abdira, Juli
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdira.v5i3.729

Abstract

Every concept in mathematics is related to one another. In addition, a concept can be a prerequisite for another concept. One concept in mathematics is the Pythagorean Theorem. In line with the results of interviews with mathematics teachers at SMPN Tublopo where there are still many students who do not understand the Pythagorean Theorem material and many students are still not focused and do not pay attention to the teacher during the learning process. So a solution is needed to solve the problems being experienced, one of which can be done is to do community service by implementing the Pythagorean puzzle media. Community service activities really help students understand the Pythagorean theorem material with the help of Pythagorean puzzle teaching aids. Based on the results of the pre-test and post-test, it can be seen that there was an increase of 270.83%. And based on the questionnaire, it can be seen that students find it easier to answer math questions, are happier and more enthusiastic when learning uses puzzle media. Students also find it easier to solve problems related to the Pythagorean theorem because of the help of puzzle media. Overall, we can see that there was a positive response from students after this community service was carried out based on the results of the questionnaire given after the activity ended.
Photomath application for learning algebra: Preliminary study on a school in border area Siahaan, Meiva Marthaulina Lestari; Salsinha, Cecilia Novianti; Hijriani, Lailin; Nahak, Selestina; Daniel, Farida
Indonesian Journal of Science and Mathematics Education Vol. 8 No. 1 (2025): Indonesian Journal of Science and Mathematics Education
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ijsme.v8i1.24297

Abstract

This research was motivated by the shift in the educational paradigm toward technology-integrated learning and addresses the disparity in facilities between urban and border area schools. It aimed to determine the effect of Photomath on students' cognitive abilities and to assess their attitudes, motivation, belief, and readiness towards its use in a border area school. The instruments employed were pretest, posttest, and questionnaire. This research serves as an initial study on the use of technology in schools located in border areas. A mixed-method approach was employed, combining qualitative and quantitative analyses. The qualitative analysis of student responses was facilitated by Photomath, while the quantitative method followed a pre-experimental one-group pretest-posttest design. The findings showed a 36.25% improvement in algebra test scores. Students’ learning motivation reached 82.97% (very strong), belief in Photomath was 88.13% (very strong), and readiness to use the Photomath was 78.97% (strong). After using Photomath, students understood each stage of solving algebra problems better, indicating that Photomath supported their learning process. The implication is that integrating Photomath in border-area schools provides valuable support for students, particularly in self-directed learning.
Pelatihan Metode Lattice Multiplication untuk Mempermudah Perkalian di SMP Negeri 1 Insana Rika Handayani; Fitriani; Lailin Hijriani
Mejuajua: Jurnal Pengabdian pada Masyarakat Vol. 5 No. 3 (2026): April 2026
Publisher : Yayasan Penelitian dan Inovasi Sumatera (YPIS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52622/mejuajuajabdimas.v5i3.336

Abstract

Kemampuan melakukan operasi perkalian merupakan keterampilan dasar yang penting dalam pembelajaran matematika di tingkat Sekolah Menengah Pertama (SMP). Namun, siswa sering mengalami kesulitan dalam menyelesaikan perkalian dua dan tiga digit, khususnya pada metode bersusun panjang. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pemahaman serta motivasi belajar siswa melalui pelatihan metode lattice multiplication. Kegiatan dilaksanakan di SMP Negeri 1 Insana dengan melibatkan 23 siswa kelas VII. Metode pelaksanaan menggunakan desain pre–post deskriptif dengan instrumen berupa tes dan angket skala Likert. Hasil menunjukkan rata-rata nilai siswa meningkat dari 1,26 menjadi 4,39. Selain itu, hasil angket menunjukkan peningkatan minat, motivasi, persepsi kemudahan, dan kepercayaan diri siswa setelah pelatihan. Temuan ini menunjukkan bahwa metode lattice multiplication efektif sebagai alternatif pembelajaran perkalian yang visual dan menyenangkan. Temuan ini menunjukkan bahwa metode lattice multiplication dapat menjadi strategi pembelajaran visual yang efektif dalam membantu siswa memahami operasi perkalian serta berpotensi mendukung penguatan kemampuan numerasi siswa di tingkat sekolah menengah pertama
Numeracy Training: Applying Jarimatika Method in Elementary School Students of Border Area Nunpene East Nusa Tenggara Lailin Hijriani; Meiva Marthaulina Lestari Siahaan; Justin Eduardo Simarmata; Yeni Missa; Margarita Tampani; Nelciana Talan
Smart Society Vol. 2 No. 1 (2022): Smart Society
Publisher : FOUNDAE (Foundation of Advanced Education)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/smartsociety.v2i1.101

Abstract

The numeracy skill of elementary school students in border area Nunpene East Nusa Tenggara is still relatively low. This is caused by the students’ habit use counting aid such as calculators. Therefore, it is necessary to have a Lecturer activity in the community to help elementary school students which aim to improve their numeracy skills. Because mathematics teaches various skills, one of which is counting. So that the ability to count is a fundamental thing that must be mastered by students when they learn mathematics. One of learning method that can be done to improve students' numeracy skills is by applying the Jarimatika method which involves the students' own organs directly. Indirectly cognitive and psychomotor abilities will develop simultaneously so as to increase the efficiency of students' counting speed. As for the steps of the service, the method are including the introduction of the counting method, assistance during the learning process, then providing an evaluation. The results of this training are that after the training, it can be seen from the posttest results that students have increased their numeracy skills using the Jarimatika method. As well as increasing the knowledge of mathematics teachers regarding the use of the Jarimatika method as an alternative method of numeracy
Comprehending Relations and Functions: Introducing and Demonstrating Papan Resi Teaching Aid Meiva Marthaulina Lestari Siahaan; Lailin Hijriani; Talisadika Maifa; Yosepha Patricia Wua Laja; Yohanis Ndapa Deda
Smart Society Vol. 2 No. 2 (2022): Smart Society
Publisher : FOUNDAE (Foundation of Advanced Education)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/smartsociety.v2i2.103

Abstract

The teachers need help to convey the differences between relations and functions and to make concrete examples. The purpose of the community service team is to help students find and comprehend the theory and concept about relations and functions material for grade 8 by introducing and demonstrating the Papan Resi visual aid.The service held in SMPK Aloysius Niki-Niki, Timor Tengah Utara District, Nusa Tenggara Timur. The service method is based on action research: planning, action, observation, and reflection. The data are collected based on the audiences' observation sheets and response sheets. Data analysis used data triangulation. The results of this community service are that introducing and demonstrating Papan Resi could be beneficial for increasing students' comprehension of SMPK Aloysius Niki-Niki. The constructivist situation influences it, and the service needs to be held for other teaching aids
Development of an Open-ended Numeracy Literacy Instrument: Context of Timorese Culture Meiva Marthaulina Lestari Siahaan; Cecilia Novianti Salsinha; Hendrika Bete; Lailin Hijriani
AlphaMath : Journal of Mathematics Education Alphamath: Vol. 12, No. 1, May 2026
Publisher : Department of Mathematics Education, Universitas Muhammadiyah Purwokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/alphamath.v12i1.30429

Abstract

Addressing complex problems requires multiple and sustainable solution strategies, highlighting the importance of students’ numeracy literacy. However, existing assessment practices often fail to capture students’ higher-order thinking and problem-solving flexibility, particularly in algebraic contexts. An open-ended, locally wisdom–based instrument is considered appropriate for fostering students’ problem-solving abilities; however, it is rarely implemented in regular classroom instruction. Furthermore, research on the development of open-ended numeracy literacy instruments within Timorese culture remains limited. This study aims to develop and validate an open-ended numeracy literacy instrument in the algebra domain to address this gap. The study employed a design-based development approach using Tessmer’s formative evaluation, which includes preliminary study, expert review, one-to-one, small-group, and field-test stages. Qualitative data were obtained from expert validation, student feedback, and interviews, while quantitative data were collected through student response questionnaires and test results. The findings reveal that the developed instrument meets the criteria of validity, practicality, and reliability. Furthermore, the instrument demonstrates moderate difficulty and acceptable discrimination, indicating its effectiveness in distinguishing students’ abilities. This study contributes a valid and reliable open-ended assessment tool that can support the enhancement of students’ numeracy literacy and promote meaningful mathematics learning in algebra.
Co-Authors Anas Ma&#039;ruf Annizar Anas Ma'ruf Annizar Annizar, Anas Ma'ruf Bete, Hendrika Cecilia Novianti Salsinha Deda, Yohanis Ndapa Emily Johnson Farida Daniel Fitriani Fitriani Gusti Firda Khairunnisa Handayani, Rika Khair, Muhammad Sa'duddien Lestari Siahaan, Meiva Marthaulina Maifa, Talisadika Serrisanti Margarita Tampani Maria Brigita Niis Nana Mohammad Archi Maulyda mone, ferdinandus Naimnule, Maria Nelciana Talan Qohar, Abd. Rika Handayani Risna Mira Bella Saragih Samuel Seran Selestina Nahak Siahaan, Meiva Marthaulina Lestari Simarmata, Justin Eduardo Stanislaus Amsikan Wua Laja, Yosepha Patricia Yeni Missa Zulkaidah Nur Ahzan