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All Journal Al-Jabar : Jurnal Pendidikan Matematika Indonesian Journal of Science and Mathematics Education Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Basicedu Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jambura Journal of Mathematics Education Journal of Advanced Sciences and Mathematics Education Al Khawarizmi: Jurnal Pendidikan Matematika Jurnal Basicedu Global Education Journal COSMOS
Sudiansyah, Sudiansyah
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Journal : Al-Jabar : Jurnal Pendidikan Matematika

 1 
Measurability of the mathematics teaching modules on problem solving-skills in the concentration of agribusiness expertise in plantation Sudiansyah, Sudiansyah; Rif'at, Mohamad; Hartoyo, Agung
Al-Jabar: Jurnal Pendidikan Matematika Vol 14 No 1 (2023): 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.v14i1.16078

Abstract

Preliminary research involving 30 mathematics teachers at the MGMP VHS of Ketapang district and interviews with business world and plantation industry representatives suggested that 81.7% of respondents voiced concerns over the current mathematics teaching materials, which do not adequately equip students with problem-solving skills in line with their expertise concentration. This issue reflects on the quality of VHS graduates who are expected to be job-ready and skilled. The objective of this study is to develop a measurable teaching module, conceptually and methodologically, that yields quantifiable results in alignment with the concentration of expertise and the requirements of the business and industry world. The research method adopted is a mixed method with a sequential explanatory design through the Van den Akker development study. A quantitative analysis of 20 respondents, comprising mathematics and productive teachers at a center of excellence vocational school, lecturers of Tanjung Pura STKIP, Ketapang State Polytechnic, and a team from the business and industry world in the plantation sector, resulted in a Pearson correlation of Ryx1x2x3=0.949, a determination coefficient [r2] of 0.900, and an F-calculation of 48.06 for the regression equation Y ̂ = 0.566 + 0.444 X1 + 0.278 X2 + 0.135 X3. From these results, it is concluded that the concepts, methods, and outcomes utilized in this teaching module are appropriate. The relationship between concepts, methods, and outcomes in teaching modules on skills to solve mathematical problems is unidirectional. Expert validity on aspects of module content, presentation feasibility, language appropriateness, and problem-solving skills amounted to 96.88% in the Very Valid category. Practicality from the aspects of interest, material, and language places the category at 92.02, which is very practical
Role of visual abilities in mathematics learning: An analysis of conceptual representation Rif'at, Mohamad; Sudiansyah, Sudiansyah; Imama, Khoirunnisa
Al-Jabar: Jurnal Pendidikan Matematika Vol 15 No 1 (2024): 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.v15i1.22406

Abstract

Background: In mathematics education, the understanding of concepts is often influenced by students' visual abilities, making conceptual representation crucial in facilitating comprehension of the material.Aim: This study aims to analyze the role of visual abilities in facilitating the understanding of mathematical concepts through conceptual representation.Method: This research combines quantitative analysis with the use of attribute control diagrams to evaluate data obtained from tasks designed to test students' visual abilities in a mathematical context. These tasks include the manipulation of visual representations and problem-solving using geometric concepts.Results: The findings indicate that 80% of the sample possessed visual abilities that did not meet the expected index, showing a wide variation in students' visual representation abilities. Additionally, most students (70%) were more likely to choose familiar geometric representations in problem-solving, despite difficulties in manipulating more complex concepts.Conclusion: This study demonstrates that students often struggle to effectively utilize visual representations, preferring algebraic approaches that do not fully exploit the potential of conceptual representation. The findings suggest that an increased focus on developing visual abilities, especially in conceptual representation, could strengthen mathematical understanding. Further research is needed to develop intervention strategies that can help students overcome gaps in their visual abilities.
Developing of Doing Proof for School Mathematics through Teaching and Learning Rif’at, Mohamad; Sudiansyah, Sudiansyah; Peterianus, Septian
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.v13i2.23566

Abstract

The word and the etymological sense are two hints about effective use of language, about exploration techniques, and about developing representation of information. For example, the length and width of a rectangle are not about position, but a measurement or a quantity concept. Based on the example, an area problem which given a picture and the measurements is not mathematics problem. That is a language trajectory of representations or a problem of the etymological sense. When asked to find the perimeter of rectangle, but the two quantities are whole numbers and neither is divisible by 6, then, that is mathematics trajectory. However, if the area known, say 36 squares of a measure unit, then problem of getting the perimeter is to test or to check. That is also a kind of the etymological sense of meaning
Algebraic and Visual Representation in Solving Mathematics Problems Based on Empirical Thinking Rif’at, Mohamad; Sudiansyah, Sudiansyah; Peterianus, Septian
Al-Jabar: Jurnal Pendidikan Matematika Vol 12 No 2 (2021): 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.v12i2.23567

Abstract

The researcher investigated and explored a solution of non-directed or no hint of mathematics problems presented visually or algebraic, and to embed the empirical verification thinking. The tip is a way to solve, so the students can answer the questions based on their state of mind by observing their trajectories of thinking from the steps of the solution. That is conducted at the Mathematics Education Department of Tanjungpura University at West Borneo of Indonesia for two semesters. The problems are from Researcher Repertoire, test item of Teacher Profession Education of National Indonesia, and Flanders Mathematics Olympiad. Before the issues given to the students, the construct validity has calculated from intake participants using Cramer’ Test with C coefficient is equal to 0.83. We analyze the students’ empirical verification thinking of their solutions. The analysis is about the trend of the thinking, model of representation, and completeness of the logical steps. The results are: the pattern of thinking tends to linear model or of meta-pattern, the description tends to be non-linear or varies of the solution, and the logical steps tend to be a non-recognizable form of thinking. In general, the more visual representations, the less thinking models of the representations; the answers based on algebraic thinking; the visual illustrations are limited, where the algebraic without any manipulation and not need any hint; and the visual images used are part of it in solving the problems and no manipulation.
Co-Authors Agung Hartoyo Ahmad Yani T Apriani, Feny Bahroyni, Ahmad Fabianus Hadiman Bosco fahrulita, Erina rina FAJRIANTI, FANY Fauziyah, Wiwin Rif'atul Gamar Al Haddar, Gamar Al Gunawan, Ahmad Sry Ahrul Hapsari, Tiara Henny, Stepanus Heriyanto Heriyanto Ida Ayu Putu Sri Widnyani Imama, Khoirunnisa Juhana, Juhana Jumadi Jumadi Juwita, Viva Khalimi, Soleh Kurnianto, Dian Kurniawati, Anugrah Lutfi, Mutia Masliyani, Sintya mohamad rifat Nurfadilah Siregar permatasari, eviani dwi Peterianus, Septian Putra, Rahman Pranovri Rais, Rinovian Renanda, Renanda Ri'fat, Mohamad Rif’at, Mohamad Romah, Dwita Rosnawati Rosnawati, Rosnawati Rostina Rostina S Siswanto Simin Simin, Simin Slamet Riyadi Sudianto, Iin Sumarni, Rita Susanti, Widya T, Hamdani Tika, Muhammad Yanti, Wilda