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Jefri Marzal

Universitas Jambi

Author-ID : 2512256

Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Public Health Social Sciences Transportation Other

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Numeracy skill development in prospective mathematics teachers: Challenges and opportunities in real-world contexts Winarni, Sri; Kamid; Marzal, Jefri; Asrial
Journal on Mathematics Education Vol. 16 No. 1 (2025): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v16i1.pp91-110

Numeracy skills are essential for prospective mathematics teachers as they bridge mathematical concepts with real-life applications. However, many prospective mathematics teachers face challenges in applying these concepts to practical situations. This study aims to analyze the conceptual and procedural errors made by prospective mathematics teachers when solving numeracy problems within the context of "Save Our Water." A descriptive research design was employed, utilizing a numeracy test adapted from the Minimum Competency Assessment (MCA) and semi-structured interviews as research instruments. The study involved 30 prospective mathematics teachers from the University of Jambi, Indonesia. The findings revealed that conceptual errors primarily stemmed from reliance on rote memorization of formulas without a deeper conceptual understanding. Procedural errors were attributed to difficulties in unit conversion, incorrect formula application, and improper manipulation of formulas. To address these issues, the study recommends incorporating contextual approaches, problem-based learning, and project-based learning strategies that connect mathematical concepts to real-world contexts. Additionally, the use of visual aids, such as diagrams and 3D models, is suggested to enhance conceptual understanding and strengthen the connection between abstract concepts and practical applications. Future research should investigate the effectiveness of these instructional approaches in improving numeracy skills and enhancing the teaching readiness of prospective mathematics teachers.

The Effect of the Implementation of Learning Models Student Teams Achievement Division (Stad) Stem Based on Mathematical Critical Thinking Ability Reviewed from Mathematics Learning Styles Rezki Amalia, Nosa; Marzal, Jefri; Kamid, Kamid
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 10 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i10.268

In initial observations, it was seen that students did not write down what they knew (interpretation), were not precise in making mathematical models (analysis), were less precise in using strategies to solve problems (evaluation), and had no conclusions (inference). After paying attention, students have different learning styles. However, the learning model used has not been able to improve mathematical critical thinking skills in terms of learning style. This research aims to find out how mathematical critical thinking skills are treated with the STEM-based STAD learning model in terms of learning styles. This type of research is quantitative research with research subjects namely class X students at MAN 1 Muaro Jambi. The research design used was a posttest only control design. The population was 115 students from 4 classes and the sample consisted of 3 classes, namely experimental class I (29 students), experimental class II (29 students), and control (28 students). The sampling technique was carried out using the cluster random sampling technique. The instruments in this research were observation sheets, learning style questionnaires, and mathematical critical thinking ability tests. The data obtained in this study were analyzed using a two-way ANOVA test. The results of the research show that: 1) There is an influence of the application of the STEM-based STAD model on mathematical critical thinking skills where the significance value of the learning model is , so is rejected or is accepted, 2) There is no influence of learning style on mathematical critical thinking skills with The significance value for learning style is , so is rejected or is accepted, and 3) There is no interaction between the application of the STEM-based STAD model and learning style on mathematical critical thinking skills with a significance value of , so is rejected or accepted. The results of the research concluded that the STEM-based STAD learning model applied in experimental class I was more effective for mathematical critical thinking skills, as evidenced by the average mathematical critical thinking ability of the STEM-based STAD learning model of which is greater than the average. using STAD and direct instruction.

Pengembangan Landing Page untuk Mendukung Digitalisasi PT Kosa Group Indonesia Menggunakan Platform Low-Code Irawan, Arswenda Jameci; Marzal, Jefri; Fadhila Putri, Mutia
Journal Software, Hardware and Information Technology Vol 5 No 2 (2025)
Publisher : Jurusan Sistem Informasi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/shift.v5i2.196

This study aims to develop a landing page as part of the digitalization strategy of PT Kosa Group Indonesia, a culinary company consisting of three main divisions: Kosarasa, Kosa Team, and Risafood. The development followed the waterfall method through observation, literature review, system design, implementation, and testing. The Framer platform was selected as a low-code solution due to its efficiency in building responsive, maintainable interfaces without the need for complex programming. This initiative was driven by the limitations of previously used platforms such as LinkTree, which lacked the capability for visual customization and did not effectively unify multi-division information. Performance testing using Google PageSpeed Insights showed an increase from 44 to 54 on mobile and from 44 to 55 on desktop after visual and structural optimizations. Usability testing using the System Usability Scale (SUS) yielded an average score of 87.25, which is categorized as excellent. The results indicate that low-code-based landing page development offers an effective solution to support business digitalization in the culinary sector, while maintaining development efficiency, strong visual identity, and user-friendly experience.

Constructivism-Based Mathematics Learning Multimedia to Improve Students’ Mathematical Communication Skills Syukri, Ahmad; Marzal, Jefri; Muhaimin, Muhaimin
Indonesian Journal of Science and Mathematics Education Vol. 3 No. 2 (2020): 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.v3i2.6201

This study aims to describe the process of developing Constructivism-based Mathematics Multimedia, determine students’ perceptions of Multimedia and find out the level of improvement in students’ mathematics communication skills after using this Multimedia. This research ran for 1 month in class X MIPA 1, X MIPA 2, and X MIPA 3 SMAN 1 Jambi. The development model used in this study is the ADDIE development model. The type of data is qualitative data and quantitative data. From the results of the pre-test and post-test, it was found that 13 students had an increase in mathematical communication skills with high criteria, 7 students had an increase in mathematical communication skills with medium criteria, and 12 students had an increase in mathematical communication skills with low criteria. Based on the results of the study it can be concluded that Constructivism-based Multimedia can improve the students’ mathematics communication skills.

Student worksheets (LKPD) using a scientific approach: the impact on critical thinking skills in linear equation system material Lovyantika, Christin; Marzal, Jefri; Haryanto, Haryanto
Desimal: Jurnal Matematika Vol. 4 No. 3 (2021): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v4i3.9800

The LKPD development process with a scientific approach uses the ADDIE model which consists of several stages, the first is analysis, namely analyzing the curriculum, validating work gaps, analyzing student needs and characteristics, the second stage is development, namely small group trials and large group trials. The third stage is implementation is by applying the LKPD that has been tested and the last stage is an evaluation which conducts an assessment of the comments of teachers and students on the developed LKPD. The purpose of this development research is to determine the effectiveness of mathematics LKPD with a scientific approach on SPTLT material. The effectiveness obtained based on the developed product can improve students' critical thinking skills from the results of the pretest and posttest which were tested with the N-gain test. After being analyzed by the N-gain test, a score of 0.73 is obtained, namely in the high category and the LKPD developed is effective. LKPD with this scientific approach can improve students' critical thinking skills very well.

An Exploration of Students' Understanding of Mathematical Concepts Based on the Information Processing System at MAN 1 Muaro Jambi Oktarino, Randy; Marzal, Jefri; Rohati, Rohati
Journal of Educational Sciences Vol. 9 No. 4 (2025): Journal of Educational Sciences
Publisher : FKIP - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.9.4.p.2864-2883

Understanding mathematical concepts is one of the essential and fundamental aspects of mathematics learning in schools, with the aim of enabling students to develop the ability to understand mathematical concepts, explain the relationships between concepts, and apply concepts or algorithms flexibly, accurately, efficiently, and appropriately in problem-solving. This study aims to analyze and understand the extent to which students comprehend mathematical concepts, as well as to evaluate the effectiveness of the information processing system at MAN 1 Muaro Jambi in supporting students’ understanding of mathematical concepts. This research is exploratory in nature and employs a descriptive qualitative approach. The research subjects consist of three tenth-grade students selected using purposive sampling. The instruments used in this study are a mathematical concept comprehension test on the topic of SPLTV and interviews. Data analysis was conducted by reducing data from written tests and interviews, and by using methodological and source triangulation. The results of the study show that the three subjects demonstrated different levels of conceptual understanding, which were based on the memory storage components involved in each subject. It is therefore concluded that students whose information processing reached the Long Term Memory stage demonstrated a better exploration of mathematical concept understanding compared to those whose processing only reached the Short Term Memory and Sensory Register stages.

PENGEMBANGAN E-MODUL BERBASIS REALISTIC MATHEMATICS EDUCATION (RME) MENGGUNAKAN 3D PAGEFLIP PROFESSIONAL PADA MATERI TEOREMA PYTHAGORAS Isnania, Isnania; Marzal, Jefri; Pasaribu, Feri Tiona
PHI: Jurnal Pendidikan Matematika Vol 9, No 2 (2025): EDISI OKTOBER, 2025
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/phi.v9i2.572

Penelitian ini bertujuan untuk mengembangkan e-modul pembelajaran materi teorema Pythagoras yang mengintegrasikan pendekatan Realistic Mathematics Education (RME) dan memanfaatkan perangkat lunak 3D Pageflip Professional. Pengembangan e-modul ini dirancang untuk meningkatkan kualitas pembelajaran matematika, khususnya pada topik teorema Pythagoras yang seringkali dianggap abstrak oleh siswa. Pendekatan RME dipilih karena kemampuannya menjembatani konsep matematika abstrak dengan dunia nyata siswa, sehingga meningkatkan pemahaman dan relevansi materi. Penelitian ini menggunakan model pengembangan ADDIE (Analysis, Design, Development, Implementation, Evaluation). Data yang dikumpulkan bersifat kualitatif dan kuantitatif, dengan subjek penelitian siswa kelas VIII A SMP N 10 Muaro Jambi. Hasil penelitian menunjukkan bahwa e-modul yang dikembangkan memiliki kualitas yang sangat valid dari segi materi (95,7%) dan desain (89%). Aspek kepraktisan terbukti melalui penilaian guru (91,4%), uji coba kelompok kecil (87,9%), dan uji coba lapangan (83%). Keefektifan e-modul terefleksi pada hasil belajar siswa, di mana rata-rata siswa yang mencapai ketuntasan belajar adalah 80,9%. Temuan ini menegaskan potensi e-modul berbasis RME dengan teknologi visualisasi 3D dalam meningkatkan hasil belajar siswa pada materi geometri.

Navigating geometric thought: A classroom-based intervention using discovery-contextual strategies aligned with van Hiele’s cognitive framework Arlianti, Nofyta; Kamid; Marzal, Jefri; Hasibuan, Muhammad Haris Effendi
Al-Jabar: Jurnal Pendidikan Matematika Vol 16 No 2 (2025): 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.v16i2.27845

Purpose: This study aims to investigate the enhancement of students’ geometric thinking through the integration of Discovery–Contextual learning strategies with van Hiele’s levels of reasoning. In addition, it examines the contribution of logical–mathematical intelligence to mathematics learning outcomes by synthesizing findings from prior research. Method: The research employed a classroom action research design implemented in three iterative cycles involving 13 fifth-semester mathematics education students. Data were collected through geometry thinking tests, observation notes, and the van Hiele-based assessment tool, then analyzed descriptively to track cognitive development across cycles. Complementing this, a meta-analysis of 41 empirical studies was conducted using a random-effects model to evaluate the consistency of logical–mathematical intelligence on students’ mathematics achievement. Findings: The results indicate steady improvement in students’ geometric reasoning, particularly at the deduction and rigor levels, with mean performance rising from 78.4% in the first cycle to 92.8% in the third. Reflection across cycles also revealed stronger engagement, reflective thinking, and collaborative learning. The meta-analysis further confirmed that logical–mathematical intelligence consistently exerts a strong and stable influence on mathematical performance across different educational stages and contexts. Significance: Findings highlight the pedagogical value of combining Discovery–Contextual learning with van Hiele’s framework to cultivate higher-order geometric thinking. At the same time, the evidence underscores the necessity of integrating logical reasoning into curriculum design and instructional strategies. Together, these contributions provide both theoretical insights and practical guidance for advancing mathematics education, especially in preparing prospective teachers to meet diverse cognitive needs.

Improving geometry transformation thinking skills using student activity sheets based on discovery-contextual learning based on Van Hiele's theory Arlianti, Nofyta; Kamid , Kamid; Marzal, Jefri; Hasibuan , Muhammad Haris Effendi
JPPI (Jurnal Penelitian Pendidikan Indonesia) Vol. 11 No. 3 (2025): JPPI (Jurnal Penelitian Pendidikan Indonesia)
Publisher : Indonesian Institute for Counseling, Education and Theraphy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/020254836

Geometry thinking ability is the ability of students in terms of observing objects, building definitions based on the characteristics inherent in the object, recognizing the relationship between one object with other objects, and applying it in solving geometry problems. However, the ability to think geometry students are still low. This is because students are still dependent on lecturers in receiving information and learning that occurs in the classroom has not facilitated the ability to think geometry, especially geometry transformation. For this reason, a student activity sheet based on Discovery- Contextual Learning based on van hiele theory was developed which is effective in improving the geometry thinking ability of mathematics education students of STKIP Muhammadiyah Sungai Penuh. The subjects of this study were 5th semester students of mathematics education. The development model used is adapted from the Plomp model. There are three stages in this model, namely preliminary research, prototype phase, and assessment. This study focused on seeing the effectiveness of the product at the assessment stage. The assessment phase was carried out on a field test consisting of 13 students for 9 meetings. The syntax of this learning model includes: 1) Stimulation, 2) Constructivism, 3) Problem Statement, 4) Data Collection, 5) Learning Community, 6) Modeling, 7) Data Processing, 8) Verification, 9) Reflection, and 10) Authentic Assessment.

Development Of E-LKPD With PNL Approach And Based On Jambi Culture To Improve Students' Mathematical Communication Skills Fa, M Nasiruddin; Marzal, Jefri; Yantoro, Yantoro; Setiawan, Alya Hanifah; Kusmayanti, Hazar; Wiyono, Sridewi Anggraeni
Edunity Kajian Ilmu Sosial dan Pendidikan Vol. 3 No. 6 (2024): Edunity : Social and Educational Studies
Publisher : PT Publikasiku Academic Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57096/edunity.v3i6.261

The low mathematical communication skills of students should be the main issue that should be of concern to an educator. Learning should be designed through problems that allow students to be able to do better mathematical communication. This study aims to produce an E-LKPD with a Problem-Based Learning approach based on Jambi culture with valid, practical, and effective quality to improve students' mathematical communication skills. The subject of this research is class VIII MTsSBustanulUlum in even semester 2023/2024. This type of research is Research and Development with the ADDIE model. The results of this study indicate that the quality of E-LKPD developed has valid, practical, and effective categories. The validity can be seen from the results of expert validation in the field of media and learning materials which show that E-LKPD is good and feasible to use, practicality can be seen from the perceptions of students and teachers who give positive responses to the E-LKPD developed and effectiveness can be seen from the increase in students' mathematical communication skills by comparing the pree test and post-test scores with the N-Gain test with an acquisition of 0.50 with a moderate category. Thus to improve students' mathematical communication skills can use E-LKPD with a problem-based learning approach based on the Jambi culture that has been developed.

Co-Authors -, Maison Abidin Abidin Ahmad Fahrudin Ahmad Syukri Ahmad Syukri Akhiyar Waladi Ali Idrus Amelya Permata Sari Amin Asri Yati Ana Rasyidah Antok Kurniawan Antok Kurniawan Ardila, Ayudita Ari Frianto Aryani, Reni Asni Johari Asrial Asrial Ayudita Ardila Bimbe, Muhammad Arrazi Alghifari Bj. Nofrian Kurni Budiman, Wahyu Chit, Suwannit Chareen Christin Lovyantika Damris Muhammad Dasrinal Tessal Debby Arisandy Dewi Triantini Dwi Agus Kurniawan Dwiki Prasetya Subakti Eko Kuntarto Elisa, Edi Elsa Novyarti Fa, M Nasiruddin Fauzi Khoirul Mahfi Fera Zulainy Feri Tiona Pasaribu Fikri , Muhammad Khalis Gunawan Gunawan Harsyah, Ahmad Syauqi Haryanto Haryanto Haryanto Haryanto Hasibuan , Muhammad Haris Effendi Hazar Kusmayanti, Hazar Hefri Asra Omika Hendra Sofyan Husni Sabil Husnul Khatimah Hutabarat, Benetika F. Idhar Khaira Indra Weni Intan Iklima Irawan, Arswenda Jameci Isnania Isnania Jodion Siburian Junaidi Junaidi Kamid , Kamid Kamid Kamid Khaira , Ulfa Khaira, Ulfa Kurniawan, Antok Kurniawan, Antok Lovyantika, Christin M Rusdi M Rusdi maki, muhammad Miko Pratama Mishi , Salmuna Sajjad Muhaimin Muhaimin Muhaimin Muhaimin Muhammad Haris Effendi Hasibuan Muhammad Iqbal muhammad maki Muhammad Rafiq Muhammad Rusdi mutia fadhila putri, mutia fadhila Mutiara Siska Nabila Hayatul Husna Nice Anggraini niken rarasati Nizlel Huda Nofyta Arlianti, Nofyta novferma, novferma Nugroho Ardy Pramono Nur Zaharah Nurjanah Nurjanah Nurjanah Nurjanah Oktarino, Randy Perdana, Yogi Putri, Regita Riani Raden Mohamad Herdian Bhakti Ratumas Feby Purniance Reli Handayani, Reli Rezki Amalia, Nosa Riana Teofani Rina Kusuma Dewi Rini Mariani Riza Maiyusriani Rizka Apriyani Putri Rizqa Raaiqa Bintana Rohati Rohati Rohati Rohati Romundza, Febbry Roni Handika Putra Rusdi Rusdi Saharudin Saharudin Saharudin Saharudin Saharudin Saharudin Saharudin Salman Jumaili Saputra , Angga Riyan Trio Sariyani SN Setiawan, Alya Hanifah Sri Winarni Sutrisno Sutrisno Syaiful Syaiful Syaiful Syaiful Syamsurizal - - syamsurizal syamsurizal Utomo, Pradita Eko Prasetyo Wahyu Fitroh Wardi Syafmen Wardi Syafmen Wawan Kurniawan Wirasapta , Andicho Haryus Wiyono, Sridewi Anggraeni Yantoro, Y Yantoro, Yantoro Yelli Ramalisa Yuliarni, Ike Yusrizal Yusrizal Zurweni Zurweni

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