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All Journal Jurnal Math-UMB.EDU AFORE: Jurnal Pendidikan Matematika Vokatek : Jurnal Pengabdian Masyarakat Ininnawa: Jurnal Pengabdian Masyarakat Jurnal Sipakatau: Inovasi Pengabdian Masyarakat International Journal of Education, Vocational and Social Science Issues in Mathematics Educations (IMED)
Usman Mulbar
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Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Languange, Linguistic, Communication & Media Mathematics Public Health Social Sciences Other

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Journal : Issues in Mathematics Educations (IMED)

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Analisis Kesalahan dalam Menyelesaikan Soal Cerita Aritmatika Sosial Ditinjau dari Kemampuan Awal Siswa Usman Mulbar; Alimuddin; Wa Ode NurRadhiah Ridjalu
Issues in Mathematics Education (IMED) Vol. 6 No. 1 (2022): Volume 6 Nomor 1 Tahun 2022
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed31697

Abstract

This study aims to determine the description of errors, types of errors, and the causes of errors made by students in solving social arithmetic story problems in terms of students’ initial abilities. The type of research us ed is dercriptive research. A total of 28 students of class VII became subjects in this stu dy. Data was collected using written tests and interviews . The collected data were analyzed quantitatively and qualitatively. The results showed that the percentage of errors from the largest to the smallest in a row is a problem with the concept of profit, purchase price, net weight, interest, discounts and taxes. The types of errors from the largest to the smallest percentages are errors in understanding the proble m, errors in completing mathematical models, errors in making mathematical models, and errors in writing the final answer to the questions. The causes of students errors are not understanding the meaning of the question, not mastering the concepts related to the problem, not mastering the steps in solving the problem, lacking mastery in the calculation process, unable to determine the next formula to solve the problem, making mistakes in the previous process, unable to write final answer, forgetting factor, and lack of practice working on the questions.
Deskripsi Kesulitan Pemecahan Masalah Matematika Siswa Ditinjau dari Adversity Quotient Amirullah; Usman Mulbar; Nurwati Djam’an
Issues in Mathematics Education (IMED) Vol. 3 No. 1 (2019): Volume 3 Nomor 1 Tahun 2019
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed.v3i1.7515

Abstract

This research aims to know the difficulties of mathematical problem solving of climbers (high AQ), campers (moderate AQ), and quitters (low AQ). The type of this research is qualitative research with descriptive approach. Subjects of this research are students of class VII Junior High School in Makassar, academic year 2017/2018. Retrieval of the subject is performed by providing questionnaire ofAQ. From the results of the questionnaire, categorize the subject by type of AQ. Then giving the test of mathematical problem-solving. After giving the test, selected purposively three subjects based on climbers student (high AQ), campers (moderate AQ), and quitters (low AQ) to be interviewed. The results of the research show: 1) Climbers subject experience a little more difficulty in problem-solving compared to campers subject and quitters subject. Climbers subject experiences two difficulties in working the test of mathematical problem solving that are the conceptual difficulty and operational difficulty. 2) Campers subject experience a little more difficulty in problem-solving than quitters subject. Campers subject experience three difficulties in working the test of mathematical problem solving that are the conceptual difficulty, principle difficulty, and operational difficulty. 3) Quitters subject experience the most difficulty in problem-solving. Quitters subject experience four difficulties in working the test of mathematical problem solving that are the conceptual difficulty, principle difficulty, operational difficulty, and careless difficulty.
Analisis Kesalahan Siswa dalam Menyelesaikan Soal Perpangkatan dan Bentuk Akar Berdasarkan Kriteria Watson Ditinjau dari Perbedaan Gender Usman Mulbar; Nasrullah; Yulinar
Issues in Mathematics Education (IMED) Vol. 6 No. 1 (2022): Volume 6 Nomor 1 Tahun 2022
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed32231

Abstract

This study aims to determine: (1) the types of errors, (2) the level of error categories, and (3) the causes of students making mistakes in solving problems of rank and root form based on Watson's criteria in terms of gender differences. The type of research used is descriptive research with a qualitative approach. There are six research subjects, namely three male students and three female students. The instruments used in data collection were test instruments and interview guidelines. The results showed that male students tended to make errors in the response level conflict with a fairly high error category where students had tried to solve the problem but students did not understand the concept of working on the problem so they failed to get the right conclusion. In addition, students only write the final answer without being accompanied by a clear reason or step for solving it because students do not know the right way to work on the problem. Meanwhile, female students tend to make mistakes in the skill hierarchy problem with the small error category where students lack the skills to calculate some arithmetic operations contained in the problem solving step and tend make mistakes other than the seven Watson categories with the small error category where students do not answer questions because students do not know the steps. solution that must be used in the work because students rarely work on problems with different forms.
Deskripsi Kemampuan Literasi Matematika Siswa Kelas VIII SMP Negeri 1 Malunda Kabupaten Majene Ahmad Talib; Usman Mulbar; Widyarti Hakman
Issues in Mathematics Education (IMED) Vol. 7 No. 2 (2023): Volume 7 Nomor 2 Tahun 2023
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed.v7i2.7545

Abstract

This research is qualitative research with a descriptive approach aimed at describing the mathematical literacy skills of class VIII students of SMP Negeri 1 Malunda, Majene Regency. There are 6 subjects selected based on high, medium and low mathematical abilities. Data collection techniques used were tests and interviews. The instruments used in obtaining the data were tests of mathematical literacy skills and interviews. The data analysis techniques used are data condensation, data presentation and conclusion. The results showed that of the 6 levels of mathematical literacy ability in PISA, students with high mathematical abilities fulfilled 3 levels, students with moderate mathematical abilities fulfilled 1 level, and students with low mathematical abilities did not fulfill the 6 levels of mathematical literacy ability in PISA.
Deskripsi Pengetahuan Konseptual Matematis Siswa SMK pada Materi Sistem Persamaan Linear Tiga Variabel Usman Mulbar; Rosidah; Asriwan
Issues in Mathematics Education (IMED) Vol. 7 No. 1 (2023): Volume 7 Nomor 1 Tahun 2023
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed.v7i1.7550

Abstract

This study aims to determine the mathematical conceptual knowledge of SMK students specifically for class X on the material of a three-variable system of linear equations. The type of research used is descriptive qualitative research. The indicators of conceptual knowledge used are recognizing examples and non-examples of concepts; interpreting models, symbols, signs, or terms used to represent concepts; manipulate ideas related to the use of multiple representations; and identify the principles related to the material of the three-variable system of linear equations. There are four research subjects, namely two students in the middle category and two students in the low category. The data collection technique used is interviews. The instruments used in data collection were conceptual knowledge test instruments and interview guidelines. The results showed that students in the medium category were only able to fulfill the indicators of interpreting models, symbols, signs, or terms used to represent concepts and identify principles related to the material of a three-variable linear equation system. Meanwhile, students in the low category are only able to fulfill the indicators of interpreting models, symbols, signs, or terms used to represent concepts and identify principles related to the material of a three-variable linear equation system.
Pengembangan Media Pembelajaran Multimedia Interaktif Pilar Baru (Pintar Belajar Bangun Ruang) pada Siswa Kelas VIII Ismail T; Usman Mulbar; Asdar
Issues in Mathematics Education (IMED) Vol. 4 No. 2 (2020): Volume 4 Nomor 2 Tahun 2020
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed15324

Abstract

The purposes of this development research to develop interactive multimedia-based learning media Pilar Baru (Pintar Belajar Bangun Ruang) and describe the quality of media based on aspects of validity, practicality, and effectiveness. The design of this study refers to the ADDIE development model which includes 5 stages, namely analysis, design, development, implementation, and evaluation. The research instruments were in the form of media assessment sheets by material experts, media experts, and teachers to measure practicality. and learning outcomes test questions to measure media effectiveness. Product testing was conducted on 36 students of class VIII. The results showed that the assessment by the material and media experts was obtained an average score 4.29 then the teacher obtained an average score of 4.4 with very good criteria so that the developed media was declared valid. The results of the questionnaire response analysis of students obtained an average score of 4.57 and the teacher's response obtained an average score of 4.62 with very good criteria. The results of observations of the implementation of learning showed a very good classification with a percentage reaching 96.87%. The percentage of classical completeness from student learning outcomes tests reached 80.6% so the media was declared effective.
Pengembangan Media Pembelajaran Animasi Powtoon pada Materi Segiempat Kelas VII SMP Clara Julia Tekkay; Usman Mulbar; Sahid
Issues in Mathematics Education (IMED) Vol. 6 No. 2 (2022): Volume 6 Nomor 2 Tahun 2022
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed37516

Abstract

This research aims to develop and produce learning media using powtoon animation applications that are valid, practical and effective. This research model refers to a ADDIE development model that includes 5 stages namely analysis, design, development, implementation, and evaluation. Research instrument in the form of validation sheets by experts to measure validity aspect; teacher activity observation sheet in managing class to measure practicality aspect; student activity observation sheet, responses, and tests to measure effectiveness aspect. Respondents for the learning media trial are students of class VIII SMP which consists of 27 students. The results showed that the learning media satisfies validity criteria based on the assessment by experts. The learning media satisfies practicality criteria based on the result of teacher activity observation are categorized as good. The learning media satisfies effective criteria based on the result of students activity observation are categorized as very good, students response are categorized as very good, and the percentage of classical completeness from student learning outcomes test reached 85%.
Deskripsi Tingkat Berpikir Visual dalam Memahami Definisi Formal Barisan Bilangan Real Berdasarkan Gaya Kognitif Mahasiswa Makassar Wahidir Ali; Ilham Minggi; Usman Mulbar
Issues in Mathematics Education (IMED) Vol. 1 No. 2 (2017): Volume 1 Nomor 2 Tahun 2017
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

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

Abstract

The purpose of this study is to describe the level of visual thinking in understanding the formal definition of real numbers sequence based on cognitive style of Field Independent type and also cognitive style of Field Dependent type of students in Mathematis Department of UNM. Visual thinking is one of the abilities that becomes the bridge for transforming information from abstract-verbs to clearer forms. Wileman (Stoke, 2001) defines visual thinking as the ability to convert information of all kinds into images, graphics, or other forms that can help communicate information. The research method used in this research is descriptive research method design. The level of visual thinking is measured by using a test instrument with a special indicator measuring the level of visual thinking. The subject of this study consisted of two persons representing the type of cognitive style, the Field Dependent type cognitive style (FD) with the Field Independent cognitive style (FI). The results of this study show the location of the shortcomings and advantages of students in visual thinking on each type of cognitive style. In addition, it is found that there is a relationship between the level of visual thinking with the thinking style of the students in Mathematics Department of UNM.
Deskripsi Kemampuan Pemecahan Masalah Matematika Siswa Ditinjau dari Tipe Kepribadian Menurut Keirsey Awi; Usman Mulbar; Sahriani
Issues in Mathematics Education (IMED) Vol. 5 No. 1 (2021): Volume 5 Nomor 1 tahun 2021
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed19908

Abstract

This study aims to describe the student’s ability to solve mathematical problems with Polya's steps (understanding the problem, devising a plan, carrying out the plan and looking back,) viewed from personality types according to Keirsey. This research is descriptive-qualitative. The research subjects were 4 students from class XI of Senior High School, with one subject for each personality type. The research instrument uses personality type classification instruments, problem-solving tests, and interview guidelines. The results of the research showed that from each of the students with the type of Keirsey personality, in solve mathematical problems more tend to be on types of Guardian and Rational personalities, can do every step of Polya’s problem-solving. Next, are the Idealist and Artisan types which are still lacking at the steps certain solving the problem of the problems given.
Deskripsi Pengaruh Model Pembelajaran Think-Pair-Share Terhadap Self-efficacy Matematis Siswa Andi Nurul Fitriani; Usman Mulbar; Rusli
Issues in Mathematics Education (IMED) Vol. 5 No. 1 (2021): Volume 5 Nomor 1 tahun 2021
Publisher : Program of Mathematics Education Department of Mathematics Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Makassar (UNM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/imed19909

Abstract

This study aims to determine the description of the influence of think-pair-share learning models on students' mathematical self-efficacy. The subjects of this study were IPS class X students in one of the high schools in Makassar. Taking the subject was done by giving a questionnaire test to students of class X IPS 3, then from these results 6 research subjects are chosen based on existing categories. The instrument used was a self-efficacy questionnaire containing 21 items that corresponded to the dimensions of self-efficacy and lesson plans that were in accordance with the syntax of the think-pairshare learning model. The results of the study showed that self-efficacy of the high category subjects had a good effect. That is because both subjects already have high strength, level, and magnitude dimensions. For self-efficacy, the medium category subject, after giving questions that were not too difficult at the initial meeting and different discussion processes, was able to influence their level dimensions. As for self-efficacy, it is low, because of the motivation given by the teacher and the success of them friends, the strength dimension and level experienced significant changes. However, because both subjects have inability to express opinions even though they have completed the task, so the generality dimension does not experience significant changes. The results of this study to give information about the effect of students' self-efficacy during the learning process so that in the learning process, teachers can help students understand the lessons according to their self-efficacy.
Co-Authors Ahmad Zaki Alfiah Salsabila Alimuddin Amirullah Andi Nurul Fitriani Asdar Asriwan Awi Clara Julia Tekkay H. Bernard Hasanah Nur Hisyam Ihsan Ilham Minggi Irwan Ismail T Kasmawati Khadijah Muhammad Akil Muhammad Darwis M Nasrullah Nurhana Nuridayanti Nurwati Djam’an Purnamawati R, Nurmala Rian Rasmi Pesona Rosidah Rusli Sahid Sahriani St. Mukarramah Sutamrin Talib, Dr. Ahmad Wa Ode NurRadhiah Ridjalu Wahidir Ali Widyarti Hakman Wiwik Handayani Yulinar