Article Per Year (5 Year)
p-Index From 2021 - 2026
5.114
P-Index
This Author published in this journals
All Journal Cakrawala Pendidikan Jurnal Pendidikan Matematika Jurnal Daya Matematis Jurnal Elemen Jurnal Terapan Abdimas Jurnal Gantang Al-Jabar : Jurnal Pendidikan Matematika HISTOGRAM: Jurnal Pendidikan Matematika Pendas : Jurnah Ilmiah Pendidikan Dasar JTAM (Jurnal Teori dan Aplikasi Matematika) Indiktika : Jurnal Inovasi Pendidikan Matematika Jurnal Review Pendidikan dan Pengajaran (JRPP) Lentera Sriwijaya : Jurnal Ilmiah Pendidikan Matematika Journal of Education and Learning Mathematics Research (JELMaR) PROGRES PENDIDIKAN Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan Mosharafa: Jurnal Pendidikan Matematika Kognitif: Jurnal Riset HOTS Pendidikan Matematika Jurnal Abdi Masyarakat Indonesia Jurnal Kajian Pembelajaran dan Keilmuan DIKMAT: Jurnal Pendidikan Matematika Inovasi Matematika (Inomatika) Mathematics Education Journal Journal on Mathematics Education SJME (Supremum Journal of Mathematics Education) Media Pendidikan Matematika
Cecil Hiltrimartin
Unknown Affiliation
Humanities Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Library & Information Science Mathematics Physics Public Health Social Sciences Other

Published : 53 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 53 Documents
Search

 2   3   4   5   6 
Pengembangan Soal Pemecahan Masalah dengan Konteks Es Kopi Gula Aren untuk Siswa SMP Setiawan, Heri; Hiltrimartin, Cecil; Hartono, Yusuf
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 5 No. 2 (2025): April - June 2025
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v5i2.3153

Abstract

Kemampuan pemecahan masalah merupakan salah satu kompetensi penting dalam pembelajaran matematika yang harus dimiliki siswa abad 21. Namun, berbagai hasil studi menunjukkan bahwa kemampuan ini masih rendah di kalangan siswa SMP. Oleh karena itu, pengembangan soal pemecahan masalah kontekstual menjadi penting untuk melatih keterampilan berpikir tingkat tinggi. Konteks es kopi gula aren dipilih karena dekat dengan kehidupan sehari-hari siswa dan mampu meningkatkan minat serta keterlibatan mereka dalam pembelajaran matematika. Penelitian ini bertujuan untuk mengembangkan soal pemecahan masalah yang memiliki tingkat validitas dan kepraktisan tinggi dengan mengangkat tema es kopi gula aren sebagai konteks. Fokus studi ini adalah pada siswa kelas VIII di SMP Islam Terapan Prof. Muhajirin Palembang. Metodologi yang digunakan berupa design research dengan pendekatan development studies, yang mencakup dua tahap utama, yakni studi pendahuluan dan evaluasi formatif. Instrumen yang dirancang meliputi sejumlah soal pemecahan masalah, kisi-kisi, kartu soal, serta rubrik penilaian. Aspek validitas dianalisis melalui tinjauan ahli yang mencakup konten, struktur soal, dan kebahasaan, serta ditinjau melalui umpan balik dari uji coba one-to-one. Sementara itu, kepraktisan dievaluasi melalui angket yang disebarkan saat uji coba kelompok kecil. Hasil validasi oleh para ahli menunjukkan bahwa soal-soal tersebut sangat valid, dan data dari angket kepraktisan menunjukkan bahwa soal mudah dipahami dan dapat digunakan secara efektif dalam proses belajar. Oleh karena itu, soal pemecahan masalah dengan latar es kopi gula aren dianggap layak digunakan sebagai inovasi pembelajaran matematika di tingkat SMP.
Microlearning-based media of probability: An innovative student worksheet Novi Komariyatiningsih; Yusuf Hartono; Ratu Ilma Indra Putri; Cecil Hiltrimartin
Jurnal Elemen Vol 11 No 2 (2025): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v11i2.27600

Abstract

The constraint on reasoning ability among Indonesian mathematics students is a pressing issue. Several study results show that students' low mathematical reasoning is due to a lack of conceptual understanding of the material being studied. Probability is one of the materials that can help mathematical reasoning. There is a sample space that requires students' reasoning ability to determine all possible outcomes. This study aims to design a microlearning-based learning on probability material using the culinary tourism context of Prabumulih City that is integrated into student worksheet, which is valid and practical to help students learn the probability in phase E and train their reasoning skills by PMRI (Indonesian Realistic Mathematics Education). This study was a qualitative method of development study type, consisting of two stages: preliminary study and formative evaluation. The subject of this study was 36 tenth-grade. The data collection techniques were observation, tests, and interviews, which were analyzed descriptively. This research produced a student worksheet that was valid and practical and integrated with microlearning media (comic, video) on probability material using the culinary tourism context of Prabumulih City, Indonesia. Based on data analysis, this worksheet can improve students' conceptual understanding and reasoning abilities.
The development of teaching materials based on mathematical modeling in the context of climate change for prospective teachers Agustarina, Mitta; Hiltrimartin, Cecil; Aisyah, Nyimas; Ismet, Ismet; Meilinda, Meilinda; Silvhiany, Sary
Al-Jabar: Jurnal Pendidikan Matematika Vol 13 No 2 (2022): 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.v13i2.14565

Abstract

Mathematical modeling ability is one of the important skills prospective teachers and students possess in solving contextual problems. One that often happens around us is climate change. This study aims to develop teaching materials based on mathematical modeling in the context of climate change that is valid and practical. The method used is research and development with the ADDIE development model. This research was conducted at one of the state universities in Indonesia with a total of 53 subjects. Data collection techniques using observation, interviews, and tests. Data analysis techniques use qualitative research methods by looking at indicators and mathematical modeling abilities. This research produces teaching material based on mathematical modeling in the context of climate change that is valid and practical for prospective teachers. The evaluation results showed that most of the research subjects could not solve the problems correctly. Teaching materials based on mathematical modeling that have been developed can be input for prospective teachers regarding teaching materials that will be given, especially in the context of climate change, so that later they will help develop students' problem-solving abilities.
Analysis of Textbooks on Trigonometric Identity Equations in the 1975 Curriculum, Merdeka Curriculum, and the 2nd Blitzer Trigonometry Book Ely Susanti, Ely; Hiltrimartin, Cecil; Okta, Miko
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v13i2.72889

Abstract

This study aims to analyze the presentation of trigonometric identities in three textbooks used in different curricula, namely Mathematics 7 for Senior High School (1975 Curriculum), Mathematics for Senior High School/Vocational High School Grade XI Independent Curriculum (2022), and Trigonometry (2nd Edition) by Blitzer (2018). The research method uses content analysis of facts, concepts, principles, and examples of questions and problem-solving questions in these books. The results of the analysis show differences in presentation approaches, where the 1975 Curriculum book presents material in a simple but less systematic manner, the Independent Curriculum combines context but is less consistent, and the Blitzer book presents comprehensive material with a focus on real-world applications. Analysis of questions based on cognitive levels and the PISA framework places the Blitzer book as superior in terms of the variety and depth of questions. These findings are important as material for evaluating and developing textbooks to improve understanding and competitiveness of mathematics education at national and international levels.
Students’ Communication Skill and Algebraic Thinking through Commognitive Framework in Algebra Learning Pratiwi, Weni Dwi; Zulkardi; Putri, Ratu Ilma Indra; Hiltrimartin, Cecil
Mathematics Education Journal Vol. 19 No. 3 (2025): Mathematics Education Journal
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/mej.v19i3.pp413-436

Abstract

Mathematical communication is a skill to articulate mathematical ideas through written and verbal expressions. Despite its importance, students often exhibit difficulties in initiating and organizing mathematical ideas, particularly in written form. Prior research highlights the critical role of communication in fostering early algebraic thinking. This study aims to: (1) examine students’ mathematical communication skills and explore how it reflects early algebraic thinking, using the commognitive framework, which encompasses word use, visual mediators, narratives, and routines, and (2) describe statistically the relationship between algebraic thinking and oral communication skills. A descriptive research design with mixed-methods approach was employed, involving 29 eighth-grade students as participants. Data was collected through written tests, and the results were analyzed descriptively. The findings indicate that four students demonstrated excellent communication skills, nine students were categorized as good, 11 students as fair, three students as poor, and two students as very poor. Further analysis showed that students with stronger communication skills more effectively conveyed algebraic ideas. The results also underscore the commognitive framework practical application in enhancing students’ conceptual understanding. This study contributes to a deeper understanding of how students communicate, reason algebraically, and demonstrates the potential of the commognitive framework to support instructional design and skill development in mathematics education.
Development of Student Worksheets Integrated with Microlearning Comics for Learning Probability Komariyatiningsih, Novi; Hartono, Yusuf; Putri, Ratu Ilma Indra; Hiltrimartin, Cecil
Mathematics Education Journal Vol. 19 No. 3 (2025): Mathematics Education Journal
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/mej.v19i3.pp547-566

Abstract

Numerous studies have shown that students face difficulties in learning probability. This study aimed to enhance students’ understanding of the concept of probability while developing their reasoning skills by integrating comics into student worksheets. It focused on designing probability material for grade 10 using the student worksheets and microlearning (comics) that were both effective and efficient. The material was developed using Pendidikan Matematika Realistik Indonesia (PMRI) approach, incorporating a microlearning method within the context of culinary tourism, to enhance students’ understanding of probability and reasoning skills. This study employed a design research methodology in two stages, namely preliminary study and formative evaluation. The subjects of this study were 34 students of grade tenth at Senior High School in Prabumulih. Data collected through observations, tests, and interviews were analyzed descriptively. The study resulted the student worksheets on probability, which were incorporated with microlearning comics whose effectiveness and efficiency were aligned with the characteristics of the PMRI approach. Based on the findings, it can be concluded that the PMRI-based student worksheets that were incorporated with microlearning comics were efficient and effective in helping students develop their reasoning skills. The integration of comics and the PMRI approach reflects a commitment to innovation and the continuous development of effective learning designs that promote inclusive, equitable, and meaningful learning experiences.
Ethnomathematical Insights from the Geometric Architecture of the Sultan Mahmud Badaruddin II Museum Dina Octaria; Zulkardi, Zulkardi; Ratu Ilma Indra Putri; Cecil Hiltrimartin
Mosharafa: Jurnal Pendidikan Matematika Vol. 14 No. 1 (2025): January
Publisher : Department of Mathematics Education Program IPI Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31980/mosharafa.v14i1.3008

Abstract

Pembelajaran geometri di sekolah sering kali bersifat abstrak dan kurang memanfaatkan sumber belajar kontekstual yang dekat dengan kehidupan sehari-hari siswa. Padahal, warisan budaya memiliki potensi besar sebagai media pembelajaran matematika yang menghubungkan konsep geometri dengan nilai-nilai lokal. Penelitian ini mengkaji konsep geometri dalam arsitektur Museum Sultan Mahmud Badaruddin II Palembang serta potensinya sebagai sumber belajar etnomatematika. Menggunakan pendekatan kualitatif dengan metode etnografi yang dimodifikasi, penelitian dilakukan melalui lima tahap utama: eksplorasi awal dan identifikasi informan, pengumpulan data lapangan, dokumentasi visual dan kontekstual, analisis data, serta interpretasi etnomatematis. Data dikumpulkan melalui observasi, wawancara semi-terstruktur, dan dokumentasi visual, dianalisis dengan pendekatan domain dan taksonomi, serta diverifikasi melalui traingulasi sumber. Hasil menunjukkan elemen arsitektur museum, memuat konsep bangun datar, bangun ruang, kesebangunan, simetri, dan transformasi geometri yang terintegrasi dengan nilai budaya lokal. Temuan ini merekomendasikan integrasi museum dalam PjBL dan kurikulum berbasis kearifan lokal untuk meningkatkan keterlibatan siswa, identitas budaya, dan kompetensi guru. Geometry learning in schools often remains abstract and makes limited use of contextual resources that are closely connected to students’ daily lives. Cultural heritage holds significant potential as a medium for mathematics instruction, linking geometric concepts to local values. This study examines the geometric concepts embedded in the architecture of the Sultan Mahmud Badaruddin II Museum in Palembang and explores its potential as a learning resource within an ethnomathematics framework. Employing a qualitative approach with a modified ethnographic method, the research was conducted in five main stages: initial exploration and informant identification, field data collection, visual and contextual documentation, data analysis, and ethnomathematical interpretation. Data were collected through observations, semi-structured interviews, and visual documentation, analyzed using domain and taxonomic approaches, and verified through source triangulation. The results indicate that the museum’s architectural elements contain concepts of plane figures, solid figures, similarity, symmetry, and geometric transformations, all integrated with local cultural values. The study recommends integrating museums into PjBL and local wisdom-based curricula to enhance student engagement, strengthen cultural identity, and improve teachers’ competencies.
PENINGKATAN HASIL BELAJAR IPAS MENGGUNAKAN LEMBAR KERJA TEKA-TEKI SILANG PADA SISWA KELAS 4D Adeulliah, Novie; Hiltrimartin, Cecil; Fauzie, Fauzie
Jurnal Kajian Pembelajaran dan Keilmuan Vol 9, No 2 (2025): OKTOBER 2025
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jurnalkpk.v9i2.93167

Abstract

Learning outcomes are still one of the obstacles in learning carried out in the classroom. Consistent improvement of learning outcomes is one of the indicators of success and learning, so that many efforts are made by teachers to achieve the desired goals. One of the efforts made is the use of crossword puzzle worksheets. Crossword puzzles are activities that help students understand the lesson by filling in the blank boxes in a descending and horizontal manner. The focus of this research is how teachers can plan, implement, and assess learning outcomes using crossword puzzle worksheets in grade IV students of SD Maitreyawira Palembang for the 2024/2025 school year. The method used in this study is descriptive in the form of class action research. The results showed that crossword puzzle worksheets were successfully used in IPAS lessons up to cycle II and developed during those cycles. The learning plan that took place in cycle I and cycle II increased by 19%. In addition, data in the first cycle showed an increase in learning outcomes from 15 complete students to 20 complete students in the second cycle. Based on this data, it can be concluded that crossword puzzle worksheets can improve students' learning outcomes in science lessons.
Analisis Kemampuan Pemodelan Matematika Siswa pada Materi Aritmetika Sosial Riduan, Lindawaty; Hartono, Yusuf; Hiltrimartin, Cecil
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 4 No. 4 (2024): October - December 2024
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v4i4.2367

Abstract

Pemodelan penting bagi siswa karena memungkinkan mereka untuk memecahkan masalah real melalui konsep matematis, misalkan pada konsep aritmetika sosial dalam pemodelan matematika. Oleh karena itu, penelitian ini bertujuan untuk mengevaluasi kemampuan siswa SMP dalam menyelesaikan masalah matematika yang berhubungan dengan aritmetika sosial. Kami berfokus pada sejauhmana siswa memahami masalah, mengidentifikasi hal-hal yang relevan dengan konsep matematika, menerapkan konsep tersebut dan menjelaskan hasilnya. Kami menggunakan pendekatan kualitatif dengan melibatkan 32 siswa SMP yang diberi tugas pemodelan matematika yang nantinya dianalisa dengan langkah pemecahan masalah : understanding the task, searching mathematics, using mathematics dan explaning the result. Hasil penelitian menunjukkan bahwa 70,43% siswa mencapai ketuntasan belajar minimal. Siswa sangat baik dalam memahami masalah (95,07%) dan juga pada tahap mengidentifikasi hala-hal yang berkaitan dengan konsep matematika (88,26%) namun mengalami kesulitan dalam menerapkan konsep tersebut, terutama dalam perhitungannya (70,32%). Penelitian ini menyoroti manfaat penggunaan konteks dunia nyata untuk meningkatkan keterampilan pemodelan matematika siswa. Namun, studi ini juga menyarankan perlunya memperkuat pemahaman siswa tentang aljabar untuk membantu mereka menerapkan konsep matematika secara lebih efektif. Menerapkan lebih banyak pemodelan matematika ke dalam kurikulum dapat mempersiapkan siswa dengan lebih baik untuk memecahkan masalah dunia nyata yang kompleks
Toulmin's Model in Analyzing Students' Combinatoric Argumentation Basa, Zahra Alhumairah; Hartono, Yusuf; Aisyah, Nyimas; Hiltrimartin, Cecil
Mosharafa: Jurnal Pendidikan Matematika Vol. 13 No. 4 (2024): October
Publisher : Department of Mathematics Education Program IPI Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31980/mosharafa.v13i4.76

Abstract

Abstrak Argumentasi kombinatorik merupakan kemampuan penting dalam pembuktian matematika yang menurut model Toulmin, argumentasi tersebut terdiri dari claim, evidence, warrant, dan backing. Tujuan dari penelitian yaitu untuk menganalisis struktur argumentasi kombinatorik mahasiswa menggunakan model Toulmin. Jenis penelitian yang digunakan pada penelitian ini adalah deskriptif kualitatif. Pada penelitian ini melibatkan 93 mahasiswa semester dua tahun ajaran 2022/2023 di Jurusan Pendidikan Matematika Universitas Sriwijaya. Pengumpulan data pada penelitian ini melalui tes tertulis. Para mahasiswa diminta untuk memberikan argumentasi kombinatorik pada pembuktian matematika yang berkaitan dengan teorema binomial. Argumentasi kombinatorik tersebut kemudian dianalisis menggunakan model Toulmin. Hasil penelitian menunjukkan bahwa 96% kemampuan argumentasi kombinatorik mahasiswa berada pada level 2 dengan kategori argumentasi kombinatorik disusun dengan kurang baik, serta sebagian besar mahasiswa mengalami kesulitan dalam memberikan claim, evidence, warrant, dan backing dalam argumentasi kombinatorik. Berdasarkan temuan ini, disarankan agar program pembelajaran difokuskan pada penguatan keterampilan berpikir kritis dan argumentatif, melalui metode diskusi terbimbing, problem-based learning, serta pemberian latihan soal yang mendorong eksplorasi dan pembenaran logis atas setiap jawaban yang diberikan mahasiswa Abstract Combinatorial argumentation is an important ability in mathematical proof, and according to Toulmin's model, the argumentation consists of claim, evidence, warrant, and backing. The purpose of the research is to analyze the combinatorial argumentation structure of undergraduate students using the Toulmin model. The type of research used in this research is descriptive qualitative. This study involved 93 second-semester undergraduate students in the 2022/2023 academic year at the Department of Mathematics Education, Sriwijaya University. Data collection in this study was through written tests. The undergraduate students were instructed to provide combinatorial argumentation on mathematical proofs related to the binomial theorem. The combinatorial argumentation was then analyzed using the Toulmin model. The results showed that 96% of undergraduate students' combinatorial argumentation skills were at level 2 with the category of badly organized combinatorial argumentation, and most undergraduate students had difficulties in providing claim, evidence, warrant, and backing in combinatorial argumentation. Based on these results, it is suggested that the learning program should focus on the improvement of critical and argumentative thinking skills through guided discussions, problem-based learning, and exercises that encourage exploration and logical justification of each answer given by undergraduate students.
Co-Authors Adeulliah, Novie Agustarina, Mitta Araiku, Jeri Aziza, Difa Azka, Dea Alvionita Azka, Dea Alvionita Basa, Zahra Alhumairah Darmawijoyo, Darmawijoyo Desvitasari, Tria Dina Octaria Dina Octaria Diva, Karen Dwi Budi Santoso Ely Susanti Ely Susanti, Ely Erpina, Reppy Ety Septiati Farida Aryani Fauzie, Fauzie Firaisti, Sicilia Freti Lesiana Giani Giani Hadi Nasbey Hapizah Ida Sriyanti Indaryanti Indaryanti Ismet Ismet, Ismet Ketang Wiyono Kodri Madang Komariyatiningsih, Novi Kurniadi, Elika Made Sukaryawan Maharani, Annisa Dwi Maharani, Levana Manulang, Lilis Sri Jayanti Meilinda Meilinda Meriza, Dyna Meryansumayeka Meryansumayeka Muhamad Ikhsan Sahal Guntur Mulyono, Budi N. Fahriza Fuadiah Najmi Wahyuni Norma Setiawati, Norma Novi Komariyatiningsih Nurul Ain Safura Nurwijayanti Nyimas Aisyah Nyimas Aisyah Okta, Miko Oktaria, Pelinsia Oktaviani, Sherly Pratiwi, Weni Dwi Putri, Amelia Defrianti Putri, Debi Suci Rahma Amsar Napenty Rahma Siska Utari Ramandani, M. Rizky Ratu Ilma Indra Putri Riduan, Lindawaty Safegi, Jihan Della Sari, Arika Sari, Nopi Nopa Sary Silvhiany Scristia Scristia, Scristia Somakim, Somakim Sri Sumarni Sukmaningtyas, Novika Susanty, Ely Theresia Ingga Sari Utami, Putri Indah Widioktafarani, Hanny Wulandari, Trisna Yenny Anwar Yesi Arianti, Yesi Yusuf Hartono Zuli Nuraeni Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi