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Learning obstacle of proportion learning based on proposional reasoning level: A case study pre-service mathematics teachers
Sugiarni, Rani;
Herman, Tatang;
Suryadi, Didi;
Prabawanto, Sufyani;
Jusniani, Nia
Jurnal Elemen Vol 11 No 1 (2025): January
Publisher : Universitas Hamzanwadi
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DOI: 10.29408/jel.v11i1.27418
The proportion has emerged as an important mathematical topic in high school because of its foundation in other mathematics topics. This study aims to identify the learning barriers of pre-service mathematics teachers (PMT) based on the material proportion and level of reasoning proportion. This study implemented Didactical Design Research (DDR) and used qualitative research methodologies within an interpretive paradigm. The research participants were 25 PMTs from a seventh-semester candidate teacher at a private college in Cianjur, Indonesia. The data collected from the test results and interviews were analyzed using procedures such as identification, clarification, reduction, and verification. We then present the findings in a narrative format. Langrall and Swafford categorized the results of written tests at the proportional-reasoning level. Based on the results, the PMT at the varied proportional level but at the nonproportional level 0 identified learning obstacles, which include ontogenetic obstacles, epistimology obstacles, and didactic obstacles. The results of this study are expected to be used as a basis for designing hypothetical learning for school mathematical research in future PMT.
Redesigning geometry assessments to promote advanced geometric thinking: A case study on formal deduction and rigor
Scristia;
Herman, Tatang;
Septy Sari Yukans
Jurnal Elemen Vol 11 No 1 (2025): January
Publisher : Universitas Hamzanwadi
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DOI: 10.29408/jel.v11i1.27723
Many geometry problems at the university level, particularly in analytic geometry courses, tend to prioritize procedural tasks to foster deeper geometric thinking. This study aims to analyze and redesign existing geometry problems to enhance pre-service mathematics teachers' formal deductive reasoning and rigor in accordance with the Van Hiele model. Employing a case study approach, four geometric problems were analyzed in relation to their alignment with various levels of geometric thinking. The study involved a detailed examination of pre-service mathematics teachers’ responses and the structure of their problems to identify aspects that require improvement to better support higher-order thinking. The methodology included a content analysis of problem design and pre-service mathematics teachers’ answers, focusing on their engagement in formal deduction and generalization. The findings indicate that the current problems insufficiently promote the development of formal deduction and rigor, as they are primarily centered on formula applications without requiring proof or generalization. Specific recommendations are provided in the form of redesigned analytic geometric problems aimed at fostering advanced geometric thinking. These redesigns are expected to help pre-service mathematics teachers tackle more complex mathematical problems by encouraging logical reasoning and argumentation.
Analisis Pembelajaran Berbasis Kinestetik pada Materi Bangun Ruang Terhadap Pemahaman Siswa
Nassta Radhini;
Herman, Tatang;
Hasanah, Aan
Jurnal Ilmu Pendidikan Muhammadiyah Kramat Jati Vol 6 No 1 (2025): Jurnal Ilmu Pendidikan Muhammadiyah Kramat Jati
Publisher : Pimpinan Cabang Muhammadiyah Kramat Jati
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DOI: 10.55943/jipmukjt.v6i1.332
Penelitian ini mengidentifikasi kesulitan siswa selama pembelajaran berbasis kinestetik, mengukur peningkatan pemahaman konsep dasar bangun ruang setelah penerapan metode tersebut, serta menganalisis keefektifan pembelajaran berbasis kinestetik secara keseluruhan pada siswa kelas IX SMPN 12 Kota Bandung. Teknik pengumpulan data menggunakan observasi dan angket. Analisis data dilakukan secara kualitatif melalui tahapan pengumpulan data, reduksi data, penyajian data dan penarikan kesimpulan. Teknik analisis data dengan menggunakan model Miles & Huberman meliputi pengumpulan data, reduksi data, penyajian data dan penarikan kesimpulan. Selama proses pembelajaran guru menggunakan pembelajaran berbasis kinestetik dan di akhir pembelajaran siswa mengisi lembar angket untuk mengidentifikasi kesulitan-kesulitan yang dialami selama kegiatan pembelajaran. Kegiatan pembelajaran berbasis kinestetik ini dapat dijadikan alternatif agar kegiatan pembelajaran tidak monoton yang membuat siswa bosan dan berdampak akan pemahaman siswa pada materi yang diajarkan. Hasil penelitian ini menunjukkan bahwa terdapat hubungan antara pemahaman peserta didik dan metode pembelajaran yang digunakan pada materi bangun ruang.
APPLICATION OF REALISTIC MATHEMATICS APPROACH TO IMPROVE STUDENTS PROBLEM SOLVING ABILITY IN ELEMENTARY SCHOOL
Rahayu, Teten Ginanjar;
Herman, Tatang;
Prawiyogi, Anggy Giri;
Rahayu, Galih Dani Septiyan
PrimaryEdu : Journal of Primary Education Vol. 5 No. 2 (2021): Volume 5, Number 2, September 2021
Publisher : Institut Keguruan dan Ilmu Pendidikan Siliwangi
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DOI: 10.22460/pej.v5i2.2758
This research is motivated by the low level of problem solving ability of grade IV students of SDIT Cendekia Purwakarta, from 30 students only 5 students who only get the percentage of learning mastery 16,6%. One alternative approach to learning that can be used to improve students' problem solving skills is by applying the Realistic Mathematics Education (RME). This approach in learning can relate learning to the real world and a problem imagined in the minds of students to be the starting point of learning, so that abstract learning can be made real by the students. This study aims to improve students' problem solving skills of grade IV SDIT Cendekia Purwakarta on the implementation of research by applying Realistic Mathematics Education. The research method used is Classroom Action Research with Kemmis and Mc. Taggart. Instruments used are student and teacher observation sheets and test problem solving abilities. Based on the results of research for 2 cycles obtained results on the cycle I percentage mastery learning students reached 56.6% with many students who complete 17 students and on the second cycle increased to 27 students who complete learning with a large percentage of 90%. Therefore, it can be concluded that the application of realistic mathematics education can improve the problem solving ability of elementary school students.Â
Blended Learning Model Implementation Study to Improve Learning Outcomes Elementary School Student Mathematics
Sidik, Ghany Taufik;
Iswara, Prana Dwija;
Herman, Tatang
PrimaryEdu : Journal of Primary Education Vol. 6 No. 2 (2022): Volume 6, Number 2, September 2022
Publisher : Institut Keguruan dan Ilmu Pendidikan Siliwangi
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DOI: 10.22460/pej.v6i2.3208
The background of this study is the low completion of student learning outcomes against five competencies in Mathematics lessons at the elementary school level. The use of teacher strategies is undoubtedly a critical consideration in overcoming the low learning outcomes of Mathematics at the elementary school level. Learning strategies using technology-based media that combine face-to-face learning in schools and remote online education expect to be a solution for teachers in overcoming the low outcomes of learning Mathematics at the elementary school level. Therefore, the author's purpose in researching this article is to examine implementing the Blended Learning model to improve mathematics learning outcomes for elementary school students. The method used by the author in this study is the systematic literature review method. Researchers reviewed 5 research articles on the Blended Learning model's implementation in mathematics published from 2019 to 2021 in elementary schools. The technique applied by the author in collecting data is the documentation technique. Then the instrument used by the author in this study is in the form of a list of classification order of research materials based on a research study focus and the format of research notes. This study resulted in a significant increase in the completeness of student learning outcomes in 5 different elementary schools from 5 researchs caused by teachers choosing to implement the Blended Learning model in Mathematics lessons.
Development of web-based learning media with a realistic mathematics education approach to increase student self-determination
Muhammad, Iryana;
Jupri, Al;
Herman, Tatang
Jurnal Infinity Vol 14 No 2 (2025): VOLUME 14, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES
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DOI: 10.22460/infinity.v14i2.p303-322
This study aims to: (1) develop and validate web-based learning media utilizing Google Sites with a realistic mathematics education (RME) approach on linear inequality material in one variable that is valid and effective; (2) enhance students' self-determination in mathematics. The subjects consisted of 27 seventh-grade students from a junior high school in Lhokseumawe City, Aceh. This research employed the research and development (R&D) method using the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The instruments used include expert validation sheets, student response questionnaires on the practicality of the media, and student self-determination questionnaires. The results indicate that the web-based learning media with the RME approach on linear inequality in one variable is suitable for use and improves students' self-determination in mathematics. This study highlights the potential benefits of web-based learning with the RME approach in mathematics education.
Pengembangan E-Modul Interaktif Berbasis HTML 5 Package Materi Rasio melalui Pendekatan Representasi Matematis
Sugilar, Hamdan;
Herman, Tatang;
Darhim, Darhim
Jurnal Perspektif Vol 9, No 1 (2025): Jurnal Perspektif: Volume 9 Nomor 1 Tahun 2024 (Article in Press)
Publisher : UIN Sunan Gunung Djati Bandung
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DOI: 10.15575/jp.v9i1.322
Pengembangan e-modul interaktif dengan pendekatan refresentasi matematis menjadi salah satu bahan ajar materi rasio. Tujuan penelitian ini untuk mengembangkan sumber belajar berupa e-modul interaktif berbasis HTML5 Package untuk meningkatkan kemampuan representasi matematis. Metode yang digunakan adalah penelitian dan pengembangan (research and development) dengan model ADDIE (Analysis, Design, Development, Implementation, and Evaluation). Sumber data didapatkan dari validator materi, validator media, peserta didik kelas VII Salah satu SMPN di Kabupaten Bandung. Analisis data untuk pengembangan e-modul interaktif berbasis HTML5 Package kriteria sangat valid dari ahli materi dan ahli media, memperoleh kriteria praktis dari peserta didik, dan efektif dalam peningkatan kemampuan representasi matematis. Hasil penelitian menunjukan bahwa e-modul interaktif berbasis HTML5 Package bisa menjadi sumber belajar untuk mempelajari materi rasio dimanapun dan kapanpun karena praktis, efisien, dan mampu meningkatkan motivasi dan kemampuan refresentasi matematis siswa.
How does interactive case-based learning improve students' complex mathematical problem-solving abilities?
Miftah, Ramdani;
Dahlan, Jarnawi Afghani;
Kurniawati, Lia;
Herman, Tatang;
Lutfiana, Lutfiana
Journal of Honai Math Vol. 7 No. 2 (2024): Journal of Honai Math
Publisher : Universitas Papua
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DOI: 10.30862/jhm.v7i2.622
Complex Mathematical Problem Solving (CMPS) is a crucial competency that equips students to navigate uncertain future situations. To enhance this skill, there is a need for more effective instructional models. One promising approach is Interactive Case-Based Learning (ICBL), an advanced iteration of the Case-Based Learning model. ICBL engages students with intricate real-world cases, enabling them to grasp mathematical concepts and adapt to novel and unfamiliar scenarios encountered in everyday life. This study aims to evaluate students' CMPS abilities following participation in ICBL-based instruction and to assess their responses to this instructional approach. A quasi-experimental design was employed, involving an experimental group and a control group. The participants were seventh-grade students studying sequences and series. The research utilized ICBL-based teaching materials, CMPS ability tests, and student response questionnaires. The study's findings are that students instructed using the ICBL model demonstrated superior CMPS abilities compared to those instructed using traditional methods, and students responded positively to the ICBL instructional model in mathematics learning. This research underscores that the ICBL model can significantly enhance students' ability to solve complex problems. Consequently, educators should consider incorporating the ICBL model into their teaching strategies, and curricula should be adapted to support its implementation.
DESAIN DIDAKTIS BERPIKIR KREATIF MATEMATIS PADA MATERI BANGUN RUANG SISI DATAR BERBANTUAN GEOGEBRA
Nurcahyo Ade Prasetyo;
Tatang Herman;
Al Jupri
Journal on Mathematics Education Research (J-MER) Vol 1, No 1 (2020)
Publisher : Departemen Pendidikan Matematika, FPMIPA, UPI
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DOI: 10.17509/j-mer.v1i1.24574
Adanya pembelajaran yang kurang bermakna mengakibatkan kesulitan belajar bagi siswa dan kesulitan siswa dalam meningkatkan kemampuan berpikir tingkat tinggi khususnya kemampuan berpikir kreatif. Penelitian ini bertujuan untuk membuat desain didaktis guna meminimalisir kesulitan belajar dan melatih kemampuan berpikir kreatif. Desain didaktis yang dibuat terdiri dari dua lesson design yang diimplementasikan menggunakan aplikasi Geogebra sebagai alat bantu penemuan konsep matematika serta media demonstrasi dan visualisasi. Selain itu, dalam desain didaktis ini, terdapat latihan soal dan kuis yang mengacu pada indikator berpikir kreatif. Penelitian ini dilakukan kepada siswa kelas VIII Sekolah Menengah Pertama (34 siswa) yang belum pernah mendapatkan pembelajaran konsep luas permukaan dan volume limas. Metode penelitian yang digunakan adalah metode penelitian kualitatif dengan teknik pengumpulan data secara triangulasi, yaitu mengombinasikan data observasi, wawancara, dan dokumentasi. Berdasarkan hasil penelitian, desain didaktis ini dapat meminimalisir kesulitan belajar dan melatih siswa untuk berpikir kreatif sehingga dapat dijadikan alternatif bahan ajar pada pembelajaran luas permukaan dan volume limas.
Karakteristik Ways of Thinking dan Ways of Understanding Siswa Kelas VII dalam Menyelesaikan Masalah Bilangan Bulat dan Pecahan
Syifa Ananda;
Tatang Herman
Journal on Mathematics Education Research (J-MER) Vol 4, No 2 (2023): November
Publisher : Departemen Pendidikan Matematika, FPMIPA, UPI
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DOI: 10.17509/j-mer.v4i2.65093
Cara berpikir atau WoT adalah karakteristik dari suatu tindakan mental yang dilakukan oleh seseorang sedangakan cara memahami atau WoU kumpulan atau struktur-struktur yang terdiri dari aksioma tertentu, definisi, teorema, bukti, masalah, dan solusi. Tujuan penelitian ini yaitu untuk menganalisis karakteristik cara berpikir (Ways of Thinking) dan cara memahami (Ways of Understanding) siswa dalam menyelesaikan masalah bilangan bulat dan pecahan. Metode penelitian yang dilakukan adalah penelitian kualitatif deskriptif. Subjek penelitian ini yaitu siswa kelas SMP kelas VII yang sudah mempelajari materi operasi hitung bilangan bulat dan pecahan. Hasil penelitian menunjukan bahwa karakteristik WoT dan WoU siswa dalam menyelesaikan masalah terkain bilangan bulat dan pecahan saling berhubungan. Cara memahami konsep yang salah atau tidak utuh menghasilkan cara berpikir yang tidak logis atau salah. Begitu pun sebaliknya, pemahaman yang baik mengenai bilangan bulat dan pecahan menghasilkan penyelesaian dari cara berpikir yang sistematis, logis, dan efektif .