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Siahaan, Meiva Marthaulina Lestari

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The Differences in Effectiveness of Learning Using Contextual Teaching and Learning (CTL) and The Missouri Mathematics Project (MMP) in Terms of Mathematics Learning Outcomes Yosepha P. W. Laja; Eduardus Beo Seso Delvion; Meiva Marthaulina Lestari Siahaan; Ermelinda Nainahas; Minanur Rohman
RANGE: Jurnal Pendidikan Matematika Vol. 6 No. 1 (2024): Range Juli 2024
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v6i1.6844

This study aims to compare the effectiveness of learning using Contextual Teaching and Learning (CTL) and the Missouri Mathematics Project (MMP) in terms of students' mathematics learning outcomes. The research method employed was an experiment with a pretest-posttest non-equivalent comparison-group design. The research population consisted of seventh-grade students, with the sample being students from class VII A using the CTL learning model and class VII B using the MMP learning model. The independent variable in this study is the learning model, while the dependent variable is the mathematics learning outcomes. The instruments used were a learning outcome test and an observation sheet for the implementation of learning. The results of the study indicate that both learning models, CTL and MMP, are effective in improving students' mathematics learning outcomes. The Wilcoxon test analysis showed that the significance values for both models were less than 0.05, indicating their effectiveness. However, the Mann-Whitney test revealed no significant difference in effectiveness between the two learning models. These findings suggest that both CTL and MMP can be used as effective alternative teaching methods to enhance students' mathematics learning outcomes. This study contributes to the selection of appropriate teaching methods to improve understanding and learning outcomes in mathematics. It is recommended for future researchers to investigate other aspects such as cognitive, psychomotor, or affective domains, and for teachers to consider using CTL and MMP in their teaching activities.

An Analysis of Grade VIII Students' Difficulties in Solving Circle Story Problems: A Study Based on Polya's Problem-Solving Theory Manekat, Septianingsi; Son, Aloisius Loka; Siahaan, Meiva Marthaulina Lestari
Brillo Journal Vol 4 No 2 (2025): Innovative Practices in Mathematics Teaching and Learning
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v4i2.70

This study aims to explore the difficulties experienced by students of grade VIII of junior high school in solving circle story problems based on Polya's Theory. The research approach used is a qualitative approach. This type of research is qualitative descriptive research. This research was conducted in one of the junior high schools in North Central Timor Regency. The subjects of this study were grade VIII consisting of 20 students. The instruments used were 4 circle material test questions and interviews to determine the factors that cause students to have difficulty working on the questions. Data analysis techniques through the stages of test data analysis, data reduction, data display and conclusion drawing. The results of this study indicate that the difficulties faced by students are 1) difficulty understanding the problem, namely students have difficulty in positioning the function of the symbol on the known and asked parts of the question, 2) difficulty making a solution plan, namely students have difficulty connecting the known and asked elements so that students do not fully understand the strategy that will be used to plan the solution, 3) difficulty completing the solution plan, namely students have difficulty writing a complete formula to be used in solving the problem so that they do not find the results requested by the question, 4) difficulty re-checking, namely students do not know how to make conclusions from the results of their work.

Chatbot Artificial Intelligence (AI) to Supporting Differentiated Mathematics Learning Laja, Yosepha Patricia Wua; Delvion, Eduardus Beo Seso; Siahaan, Meiva Marthaulina Lestari
Jurnal Pendidikan MIPA Vol 26, No 1 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i1.pp118-130

Artificial Intelligence chatbots have become famous nowadays because of their ease of use, which is even felt by educators and students. However, the AI chatbot algorithm sometimes does not match what is expected because it is not precise and does not match the prompt. For example, when we type the prompt "basic concepts of mathematical modeling for middle school class VII" there is very little explanation of the basic concepts. The search results provided by AI chatbots are too complex for students who want to learn simple basics. Based on this, this research was carried out with the aim of developing an AI chatbot to support differentiation learning. This type of research is ADDIE model development research which is carried out in five stages, namely analysis, design, development, implementation and evaluation. The results of the research at the analysis stage are that students need learning media that is appropriate to their level of understanding of mathematical modeling material as basic material before studying other material. The results of this analysis are the basis for designing an AI chatbot and bot scenarios to be developed and given to experts, namely educational technologists and mathematics education lecturers. After that, small class trials and large class trials at the implementation stage to get practicality and effectiveness test results in using the AI chatbot. The final stage is evaluation as a process of reflection on the results of AI chatbot development. The research results show that the AI chatbot media developed is valid, practical and effective. Valid criteria with a percentage of 89.7%, practical criteria of 85% and effective criteria of 77.67% in small group trials. Keywords: chatbot AI, differentiated, mathematics learning.

An Identification of Conceptual and Procedural Understanding: Study on Preservice Secondary Mathematics Teacher Klau, Kondradus Yohanes; Siahaan, Meiva Marthaulina Lestari; Simarmata, Justin Eduardo
Al-Jabar: Jurnal Pendidikan Matematika Vol 11 No 2 (2020): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v11i2.7310

Preservice mathematics teachers (PSMTs) need to master teaching material besides pedagogical competence. This knowledge is a combination of conceptual and procedural knowledge. Teachers should possess the ability to explain a concept, the reason for the concepts used, and the relationship among several concepts clearly and effectively to identify why the concept is used. This study aimed to identify the conceptual and procedural knowledge of PSMTs in Linear Algebra courses. Data collection was carried out through tests and interviews. The interview was conducted with several participants to clarify their test answers. The participants' interview answers revealed that they had difficulty in choosing the proper concept answering modified questions. Also, the participants tried to answer the question using a procedural approach. According to the findings, it is vital to construct appropriate teaching materials appropriate for the learning objective and material map concept.

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

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.

A Study of Learning Obstacles: Determining Solutions of a System of Linear Equation Using Gauss-Jordan Method Siahaan, Meiva Marthaulina Lestari; Fitriani; Leli, Angelika Rosa Da Lima
Mosharafa: Jurnal Pendidikan Matematika Vol. 12 No. 1 (2023): January
Publisher : Department of Mathematics Education Program IPI Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31980/mosharafa.v12i1.748

Salah satu metode pencarian solusi SPL yang dipelajari di pendidikan tinggi adalah metode Gauss-Jordan. Berdasarkan data penelitian, mahasiswa melakukan kesalahan dalam melakukan operasi baris elementer (OBE), membentuk ke dalam matriks yang diperbesar, dan bahkan pemahaman mendasar mengenai reduksi baris dan ini berpengaruh dalam menentukan solusi suatu SPL. Untuk itu perlu dianalisis hambatan belajar yang terjadi dalam menentukan solusi SPL menggunakan metode Gauss-Jordan. Peneitian ini merupakan penelitian kualitatif dan merupakan bagian dari Didactical Design Research (DDR). Penelitian ini dilaksanakan di salah satu universitas di Nusa Tenggara Timur (NTT) dengan subjek penelitian merupakan 20 mahasiswa calon guru matematika. Teknik penelitian ini adalah tes diagnostik dan wawancara. Hasil penelitian menunjukkan beberapa hambatan yang dialami mahasiswa adalah keterbatasan pemahaman pada OBE, pengklasifikasian MEBT, dan merepresentasikan MEBT ke dalam solusi SPL. Rekomendasi dari penelitian ini adalah pengajar hendaknya membuat suatu bahan ajar yang dapat meminimalisir hambatan belajar yang dialami mahasiswa. One of many methods of finding solution of a system of linear equations (SLE) studied in higher education is the Gauss-Jordan method. Based on the research, students made mistakes in performing elementary row operations (ERO), forming into augmented matrices, and even basic understanding of row subtraction and this has an effect on determining the solution of an SLE. For this reason, it is necessary to analyze the learning obstacles that occur in determining the solution of LES using the Gauss-Jordan method. This qualitative research is part of the Didactical Design Research (DDR). This research was conducted at a university in East Nusa Tenggara (NTT) involving 20 students as preservice mathematics teacher. The technique of this research is diagnostic test and interview. The results show that some of the obstacles faced by students are insufficient understanding of ERO, classifying reduced row-echelon form (RREF), and representing MEBT into SPL solutions. This study recommends that teachers create teaching materials that minimizes learning obstacles experienced by students.

Fast Training Right on the National Examination question for Junior High School Elin, Lailin Hijriani; Simarmata, Justin Eduardo; Siahaan, Meiva Marthaulina Lestari; Mone, Ferdinandus; Seso Delvion, Eduardus Beo; Wua Laja, Yosepha Patricia; Napitupulu, Merlin Helentina; Astriani Dewi, Ni Putu Yuni
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Community service activity aimed to provide an understanding of mathematical concepts consists of tips and tricks to solve exam questions for junior high school students. Furthermore, the background of the implementation of this training is to get students used to solve non-routine problems found during national examination, particularly in mathematics subject. This community service was carried out from October to November 2019 with 15 participants. This activity consists of three stages starting with the field assessment, the implementation stage and the last is final stage. In the field assessment stage, the servant determines the trainees to work national examination questions quickly and accurately that is specifically for junior high school students and determine where training will be held. The second stage is the implementation stage for exposuring to rapid strategies in administering national examination, question and answer, and national examination simulation. The final stage is the evaluation stage that is an implementation evaluation of theactivities that have been arranged based on each task that has been given .Based on the training activity that have been carried out it can be concluded that the training activity adds the knowledge and skills of students in working mathematics national examination questions. In addition, this training motivates students to be more active in learning mathematics and to be more mature in preparing for the upcoming national examination. Keyword: training, national examination questions, junior high school students.

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

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.

Mathematical Concepts and Cultural Values in Sonaf Tamkesi: Ethnomathematics Study in a Traditional Village on Timor Island Funan, Fedelia; Son , Aloisius Loka; Siahaan, Meiva Marthaulina Lestari
Brillo Journal Vol 3 No 2 (2024): Ethnomathematics and Resilience in Mathematics Education Innovations
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v3i2.49

Mathematics is a universal science, and it is crucial for everyone to master it, both in terms of its applications and its cognitive patterns. The purpose of this research is to explore the concepts of mathematics and cultural values found in the artifacts of Sonaf Tamkesi Manufui. The study was conducted in the traditional village of Tamkesi, south Biboki District, North Central Timor Regency, in July 2023. The subjects of this study were three community leaders. The type of data collected for this research was primary data obtained through documentation and interviews between the researcher and the respondents. Data analysis was conducted through stages of domain analysis, taxonomy, componential analysis, and cultural themes. The research findings indicate that there are concepts of plane geometry in the artifacts such as trapeziums, rectangles, squares, rhombuses, triangles, circles, cylinders, hexagons, and cubes. Meanwhile, the cultural values of the artifacts in Sonaf Tamkesi are the roof symbolizes harmony, the door symbolizes greatness and respect for ancestors, the pillars symbolize vertical relations with ancestors, the betel-nut container symbolizes service, the clay pot symbolizes a gift from ancestors to the living, the hearth symbolizes balance, and harmony in achieving goals.

MENINGKATKAN KEMAMPUAN LITERASI MEMBACA DAN LITERASI NUMERASI DENGAN GIAT LITERASI BERTEMA GASING Siahaan, Meiva Marthaulina Lestari; Ahzan, Zulkaidah Nur; Fitriani, Fitriani; Neno, Hesni; Manek, Prudensius; Danul, Yuliana Serli; Tae, Rut
Jurnal Pengabdian Pendidikan Masyarakat (JPPM) Vol 4 No 2 (2023): Jurnal Pengabdian Pendidikan Masyarakat Vol 4 No 2 (2023)
Publisher : LPPM UNIVERSITAS MUHAMMADIYAH MUARA BUNGO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52060/jppm.v4i2.1427

This community service activity was held according to situation analysis and problems that occurred at SD Negeri Sasi Kefamenanu, East Nusa Tenggara. The main problem is the low ability of students to solve problem in reading numeracy literacy in AKM model. This service method is a service-learning method with the aim of improving students' reading literacy and numeracy literacy skills through GASING-themed literacy activities and increasing student motivation in learning through GASING-themed literacy activities. The results of the service activities show 1) students' initial ability to work on reading literacy and numeracy literacy questions as seen from the average percentage value of 54.10%, 2) providing GASING-themed reading literacy activities in the form of providing props in the form of letter trees, paragraph puzzles, providing GASING-themed numeracy literacy activities in the form of providing props in the form of number cards, pattern cards, and number paper, 3) students' ability to work on reading literacy and numeracy literacy questions after receiving GASING-themed literacy activities as seen from the average percentage value of 78. 70%, and 4) understanding the material conveyed through GASING-themed literacy activities, the service team provides a quick and easy way to solve literacy problems, students are also enthusiastic when the service team conveys the material, students also feel that the service team is guiding students in solving problems, students also feel excited in participating in activities, students feel interested in this activity and are willing to take part in similar activities. This indicates that this activity is beneficial for students and motivates students in learning to develop their literacy skills.

Co-Authors Ahsan, Zulkaidah Nur Ahzan, Zulkaidah Nur Aloisius Loka Son Amsikan, stanislaus - Angelika Rosa Da Lima Leli Astriani Dewi, Ni Putu Yuni Bete, Hendrika Cecilia Novianti Salsinha Damianus Dao Samo Danul, Yuliana Serli Deda, Yohanis Ndapa E. Elvis Napitupulu Eduardus Beo Seso Delvion Elin, Lailin Hijriani Emily Johnson Ermelinda Nainahas Farida Daniel Fitriani Fitriani Fitriani Fitriani Fitriani Funan, Fedelia Gusti Firda Khairunnisa Handayani, Rika Hermina Disnawati, Hermina Hesni Neno Hesni Neno, Hesni Hijriani, Lailin Hijriani, Lailin Juliana Mehelina Herlince Nenohai Klau, Kondradus Yohanes Klau, Maria Fransineti Hoar Kondradus Yohanes Klau Kristoforus Nofenaris Agung Kurnia Putri Sepdikasari Dirgantoro Ladja, Yosepha Patricia Wua Lailin Hijriani Leli, Angelika Rosa Da Lima Lidwina Felisima Tae Lidwina Felisima Tae LUDGARDIS LEDHENG Maifa, Talisadika Serrisanti Manek, Prudensius Manekat, Septianingsi Margarita Tampani Melda J Saragih Melda Jaya Saragih, Melda Jaya Merlin Helentina Napitupulu Minanur Rohman mone, ferdinandus Naifio, Elvira Riyani Mau Naimnule, Maria Nelciana Talan Oce Datu Appulembang, Oce Datu Patrisius Nulle Prudensius Manek Rika Handayani Riny Oktora Purba Rut Tae Selestina Nahak Simamarta, Justin Eduardo Simarmata, Justin Eduardo Solo, Maria Fransiska Venidora Tae, Rut Tamba, Kimura Patar Tambunan, Siska Nopa Br. Taniu, Deni Toni, Albertus Toni, Albertus - Wua Laja, Yosepha Patricia Yeni Missa Yohanes Jefrianus Kehi Yosepha P. W. Laja Yuliana Serli Danul Zulkaidah Nur Ahsan Zulkaidah Nur Ahzan

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