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All Journal International Journal of Informatics and Communication Technology (IJ-ICT) International Journal of Evaluation and Research in Education (IJERE) Jurnal Sains dan Teknologi Journal of Education and Learning (EduLearn) AKSIOMA: Jurnal Program Studi Pendidikan Matematika Mimbar Sekolah Dasar Jurnal Elemen Edumatsains Jurnal Dinamika Pendidikan Tadbir : Jurnal Studi Manajemen Pendidikan JTAM (Jurnal Teori dan Aplikasi Matematika) Beta: Jurnal Tadris Matematika Journal of Educational Research and Evaluation Journal of Education Technology Jurnal Kreativitas PKM Journal of Education and Learning Mathematics Research (JELMaR) UTAMAX : Journal of Ultimate Research and Trends in Education Jurnal Pedagogi dan Pembelajaran International Journal of Business, Law, and Education SAINSMAT: Journal of Applied Sciences, Mathematics, and Its Education Indonesian Community Journal Al-Hijr: Journal of Adulearn World Asian Journal of Educational Technology Brillo Journal Jurnal Penelitian Pendidikan Indonesia Jurnal Pendidikan Progresif
Lumbantoruan, Jitu Halomoan
Universitas Kristen Indonesia
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PENGEMBANGAN MODUL AJAR INTEGRAL TAK TENTU DENGAN MODEL KOOPERATIF Lumbantoruan, Jitu Halomoan; Herman, Tatang
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 14, No 2 (2025)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/ajpm.v14i2.11097

Abstract

Hasil belajar siswa pada materi integral tak tentu masih rendah. Rendahnya hasil belajar siswa karena tidak ada modul ajar yang digunakan untuk belajar mandiri. Modul ajar harus diintegrasikan dengan model belajar, salah satunya model kooperatif karena model kooperatif dapat meningkatkan hasil belajar siswa pada materi matematika yang dianggap sulit oleh siswa. Sehingga tujuan penelitian untuk menghasilkan modul ajar integral tak tentu yang valid, praktis dan Efektif meningkatkan hasil belajar. Jenis penelitian yang dilakukan adalah research and development (R&D) dengan model pengembangan ADDIE. Subjek penelitian melibatkan 35 siswa. Teknik pengumpulan data berupa angket yang disusun berdasarkan Skala Likert. Adapun instrument pengumpulan data yang digunakan meliputi angket validasi ahli materi, ahli pembelajaran dan guru matematika. Teknik analisis data dengan statistik deskriptif. Hasil penelitian ini menunjukkan valid dari segi materi, model pembelajaran dan guru dengan skor nilai 92.11%, 92,22% dan 90,22. Ditemukan juga pembanding hasil belajar antara siswa yang menggunakan modul ajar integral dengan yang tidak menggunakan modul ajar Integral yaitu nilai mean 67 dan 87,68. Sedangkan penilaian siswa terhadap semua aspek dalam modul ini dinilai siswa dengan skor 92,01%. Kesimpulan, pengembangan modul ajar integral tak tentu berbasis model kooperatif praktis dan efektif membantu siswa memahami materi integral dalam memperoleh hasil belajar
The Impact of Differences in Attitudes of Male and Female Prospective Teachers in Understanding Statistics Judijanto, Loso; Lumbantoruan, Jitu Halomoan
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 8, No 2 (2024): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v8i2.20396

Abstract

Universities have understood the gender gap of prospective teachers towards attitudes in facing statistics lessons is increasingly growing. However, the understanding of universities about gender in influencing prospective teachers' attitudes toward statistics lessons is still minimal. This is urgent to be studied because there is a gap between expectations in universities and facts in the field, so this study aims to analyze differences in attitudes towards statistics based on gender and identify factors that influence attitudes towards statistics. The research method used is a quantitative survey type. The research sample was 395 prospective mathematics teachers from 18 universities that prepare prospective mathematics teachers in Jakarta and the sample was selected randomly. The data collection technique was a survey using an instrument. The instrument was developed and validated. The instrument was distributed with a rating scale from point 1 to point 5. Data were collected with the help of Google. The data analysis technique used was descriptive statistics with the help of SPSS Version 25.0, assessing the mean, variance, standard deviation, and the t-test. The results found that prospective teachers have a positive attitude towards statistics and the female gender has a significant and more positive influence on attitudes towards statistics lessons. The conclusion is that gender is important in shaping prospective teachers' attitudes towards statistics lessons. The research implies that higher education needs to pay attention to gender factors in implementing the curriculum and provide training to prospective teachers to increase interest in learning statistics.
Mental Comparison of Students Learning Abacus-Arithmetic and Not Learning Abacus-Arithmetic on Mathematics Material Judijanto, Loso; Lumbantoruan, Jitu Halomoan
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 8, No 1 (2024): January
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v8i1.17614

Abstract

Students' mental mastery in elementary school mathematics lessons in Indonesia is weak, slow, inaccurate, and declining. Mastery problems among elementary school students who have studied mental abacus arithmetic were found to be low. This is an urgent matter to research because there is a gap between theory, expectations, and reality. The purpose of this research was to compare the ability to solve mathematical problems between students who studied abacus mental arithmetic and students who did not study abacus mental arithmetic. This research involved 70 students. Data collection techniques using instruments, the instruments used were the first-semester mathematics exam and mental arithmetic exam. Data analysis techniques using SPSS Version 25.0 statistics, namely the t-test, were used to compare the ability to solve mathematical problems between students who studied mental abacus-arithmetic and students who did not study mental abacus-arithmetic. Pearson correlation was used to determine the relationship between students' mental arithmetic learning achievement and their ability to solve mathematical problems. The results of the research showed that there was a significant difference (p<0.05) in learning achievement on symbolic mathematics questions and mental arithmetic achievement between students who studied mental abacus calculation and students who did not study mental abacus calculation. The minimum score of the group that studied mental abacus calculation was higher compared to the group that did not study mental abacus calculation. However, there was no significant difference (p<0.05) in mathematics learning achievement between students who studied mental abacus-arithmetic and students who did not study mental abacus-arithmetic. 
Positive Impact of Using Learning Management Systems in the Higher Education Level Lokollo, Lambertus J.; Kempa, Rudolf; Manoppo, Yance; Latuny, Leny S.; Lumbantoruan, Jitu Halomoan
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 3 (2023): Oktober
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i3.69808

Abstract

Almost all universities in urban areas already use Learning Management Systems (LMS). This obligation forces lecturers to prepare material and put it into Learning Management Systems (LMS). But facts. There are 63% of lecturers who have difficulty compiling online material. The hope is that using Learning Management Systems (LMS) can improve student learning outcomes. This research aims to determine the positive impact of implementing learning in higher education assisted by Learning Management Systems (LMS). The research wants to find out the obstacles and difficulties in implementing Learning Management Systems (LMS) learning. The research method used is a survey by distributing instruments. Data collection technique, by distributing instruments to 132 people consisting of lecturers and students who were directly involved in the learning process. The analysis technique averages the instruments that have been assessed by students and lecturers. The average results are then interpreted into sentences. As a result, lecturers find obstacles and difficulties in using the learning management system in the learning process. Obstacles and difficulties lie in the implementation of material, the use of learning models, and difficulties in assessing student attitudes and skills. It was found that the material was not included in the Learning Management Systems (LMS) but still distributed different media materials so that learning was less effective. Assessment indicators are also not given to students, so students cannot measure their abilities. In conclusion, every lecturer must prepare materials, models, and assessment instruments before using Learning Management Systems (LMS) as a tool to help implement learning in higher education.
The Influence of Opportunities to Learn and Efficacy Belief Factor towards Mathematical Knowledge for Teaching Lumbantoruan, Jitu Halomoan
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 7, No 3 (2023): July
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v7i3.15013

Abstract

This study investigates the effect of learning opportunities and beliefs on the efficacy of teaching mathematics on knowledge of mathematics for teaching. Using a structured questionnaire along with paper and pencil tests adapted from the literature review, data were collected from 187 prospective primary school teachers at the Indonesian Teacher Education Institute. Data were analyzed using Smart PLS 3.0. The results of the structural equation model show that both opportunities to learn-Practicum (β = 0.395, p < 0.001) and opportunities to learn -Program (β = 0.324, p < 0.001) are positively related to mathematics. The second regression analysis is to examine the influence of teaching efficacy beliefs on mathematics. The results showed that beliefs about expectations of learning outcomes in mathematics (β = 0.322, p < 0.001) were positively related to mathematics, while personal mathematics teaching efficacy beliefs (β = 0.017, p > 0.1) were not related to mathematics. Overall, the confidence factor and opportunities to learn explain the total 54% variance in mathematics. The implications of these findings for the successful implementation of teacher education programs in Indonesia are further elaborated.
The Effect of Knowledge and Understanding of Bahasa Indonesia toward Personal, Professional, and Social Competency of University Students Aniati, Aniati; Lumbantoruan, Jitu Halomoan; Arifin, Syaadiah; Nurfaizah, Andi; Sartika, Andi Dian
Jurnal Pendidikan Progresif Vol 14, No 1 (2024): Jurnal Pendidikan Progresif
Publisher : FKIP Universitas Lampung

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

Abstract

Abstract: The fact is that 38% of students are satisfied and 50% are less satisfied with Indonesian language competency. Another fact, out of 30,564 there are 82.59% categories of sufficient, weak, and very weak language knowledge. Urgency is researched because there is a gap between theory, expectations, and reality. So, the aim is to determine the relationship between knowledge competency and understanding of Indonesian language learning personally, professionally, and socially. Quantitative research method with surveys. Sample of 180 people out of 360. Data collection techniques using instruments assisted by Google. Likert Scale Instrument 1-5. 25.0 Statistical analysis techniques, standard deviation, and mean. The mean level of knowledge and understanding of subject content among lecturers is very high. A relationship was found between the three domains of knowledge, understanding, and personal competence. Conclusion: There is a significant relationship between knowledge and understanding of the contents of the personal, professional, and social domains. Keywords: higher education, student competencies, professional and social.DOI: http://dx.doi.org/10.23960/jpp.v14.i1.202411
Development of a mathematics module on circle material based on the small group discussion model Lumbantoruan, Jitu Halomoan; Ditasona, Candra
Journal of Education and Learning (EduLearn) Vol 18, No 1: February 2024
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/edulearn.v18i1.20920

Abstract

This research aims to produce a mathematics module on circle material based on the small group discussion model to improve learning outcomes. The fact is that there are 48% of students who get low mathematics learning outcomes. Another fact is that at the high school level, 62% of students in circle material scored below the minimum completeness criteria. Urgent development research was carried out to produce circular module products. The method in this research is research and development (RD). The subjects and objects of the research were high schools and there were 32 students. Data collection techniques, material expert instruments, teachers, and student data were also obtained from the results of student pre-tests and post-tests. The data was analyzed by adding up all the assessment scores on the instruments adding up the test results and averaging the individual and classical scores. The results, and assessment of all module components by material experts, mathematics teachers, small group trials, and large group trials were 88.29%, 90.45%, 93.50%, and 92.10% in the very good category. The average score of students' post-test results is 87.50. Conclusion, this circle module can improve student learning outcomes significantly.
A Analysis of Mathematics Teacher Difficulties in Implementing 2013 Curriculum Online: Analysis of Mathematics Halomoan, Jitu; Male, Hendrikus
International Journal of Business, Law, and Education Vol. 3 No. 1 (2022): International Journal of Business, Law, and Education
Publisher : IJBLE Scientific Publications Community Inc.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (462.227 KB) | DOI: 10.56442/ijble.v3i1.36

Abstract

ABSTRACT Research to see the difficulties of online learning. Survey of the Indonesian Ministry of Education 2020, 58% ineffective learning process, 38% lack of guidance, 35% poor communication, 62% need internet access, 59.5% object to school assignments. Research aims; 1) knowing the online learning process, 2) knowing the assessment method, 3) knowing how difficult it is for the teacher to prepare the material. Descriptive qualitative method by collecting data from observations and interviews, analysis techniques by presenting data, reduction and conclusions. The results of observational analysis and interview results 95% of the learning process still adopts curriculum 13. Students think that the teacher does not have a module as a tool for the learning process, the teacher's difficulty lies in writing integral symbols, logarithms, matrices and mathematical induction on google meet. The teacher prepares the RPP, however, the RPP given does not represent the textbook. The book given the concept is too difficult, the impact is that students only hear and receive answers from the teacher without any active interaction. 3) 60% of students disagree with the assessment method, the material being tested is more difficult than what is taught, as a result, learning outcomes are not as expected. The teacher has difficulty operating the google meet media, the teacher does not master how to write symbols, the difficulty of proving formulas, the difficulty of providing concepts, the difficulty of the internet network, the difficulty of correcting assignments, the difficulty of applying the Student center learning method, as a result the RPP designed is not in accordance with the implementation. Assessment, 45% of students do not agree with the pedagogy. Conclusion
Co-Authors Achmad Syarifudin, Achmad Adisti Ratna Puri Andi Dian Sartika Andi Nurfaizah Aniati Aniati Aniati Aniati Anisah Arifin, Syaadiah Asdar Ahmad Ayu Marida Silaban Bernadetha Nadeak Bradley Mahyar Budi Mardikawati Candra Ditasona Candra Ditasona Dane, Gerneke Daniel Jeremy Ditasona, Candra Edison Siregar Evi Deliviana Evi Syafrida Nasution Familia Novita Simanjuntak Faradiba F Gerneke Dane Hajati, Erna Noer Hanida Listiani Hendrikus Male Hendrikus Male Hendrikus Male, Hendrikus Henny Sanulita HOTMAULINA SIHOTANG Ika Rahayu Satyaninrum irsyad, irsyad Iwan Ramadhan Jefri Setyawan Jeranah Judijanto, Loso Kerdid Simbolon Laras Nadiananda Iswari Latuny, Leny S. Limbong , Mesta Lokollo, Lambertus J. Loso Judijanto Mahyar, Bradley Melda Rumia Rosmery Simorangkir Mesta Limbong Muhammad Ichsan Abda Nelius Harefa Ninda Kristin Novitasari, Dewiana Nurfaizah, Andi Nuril Huda Pikir Wisnu Wijayanto Pramono, Tias Risma Uly Risma Uly Manalu, Risma Uly Rudolf Kempa, Rudolf Ruth Yuni Kartika Samsudin Sartika, Andi Dian Siahaan, Chontina Sifra Rebeka Waruwu Simorangkir, Yosua Novembrianto Stevi Natalia Sunengsih Simatupang Supriyadi, Tugimin Susanto, Ratnawati Syaadiah Arifin Tatang Herman, Tatang Taufiqulloh Dahlan Uly, Risma Yance Manoppo