Al-Jabar : Jurnal Pendidikan Matematika
Al-Jabar : Jurnal Pendidikan Matematika, with registered number p-ISSN: 2086-5872 (print), e-ISSN: 2540-7562 (online), is a scientific journal published by Mathematics Education IAIN Raden Intan Lampung. The aim of this journal publication is to disseminate new theories and research results that have been achieved in the area of mathematics education. Al-Jabar: Jurnal Pendidikan Matematika, particularly focuses on the main issues in the development of the sciences of mathematics education, mathematics education, and applied mathematics. Al-Jabar, has been published since 2010, and starting from 2015, has been published online. Al-Jabar: Jurnal Pendidikan Matematika published twice a year, the period from January to June and July to December. This publication is available online via open access.
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<![CDATA[Problem-based learning model on mathematical analytical thinking ability and science process skills ]]>
<![CDATA[Syaiful Syaiful]]>;
<![CDATA[Kamid Kamid]]>;
<![CDATA[Dwi Agus Kurniawan]]>;
<![CDATA[Wahyu Adi Pratama]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.9744
<![CDATA[This research serves as a reference for teachers to implement problem-based learning models on analytical thinking skills and science process skills in mathematics subjects. This research examines the differences and relationships between students' analytical thinking skills and science process skills with problem-based learning models in mathematics. The sample of this research consisted of 180 students. This research is a quantitative study with a questionnaire as the instrument. The obtained data were analyzed using the t-test and correlation test. The results showed a significant difference between analytical thinking skills and students' science process skills, especially on the indicators of Observation and Classification at SMPN 35 Batanghari and SMPN 8 Batanghari students who applied the problem-based learning model in mathematics. Furthermore, it was found that there was a relationship between analytical thinking skills and science process skills because students with analytical thinking skills possessed better science process skills in problem-based learning models in mathematics subjects.]]>
<![CDATA[Heterogeneity of Indonesian primary school students’ mathematical critical thinking skills through problem-based learning: A meta-analysis ]]>
<![CDATA[Trisna Nugraha]]>;
<![CDATA[Suparman Suparman]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.9645
<![CDATA[The synthesis of some empirical researches revealed that the implementation of problem-based learning (PBL) has a heterogeneous effect size on the mathematical critical thinking skills (MCTS) of primary school students in Indonesia. However, it seems that no researches were investigating the causative factors of the heterogeneity of primary students’ MCTS through PBL. Therefore, this meta-analysis research was employed to examine three potential factors that were PBL class capacity, PBL treatment duration, and mathematics topic predicted as the causative factors of the heterogeneity of primary students’ MCTS. The Q Cochrane test by using the Comprehensive Meta-Analysis (CMA) application was used to examine these potential factors. The synthesis of ten primary studies published in 2015 – 2020 and indexed by Scopus, Google Scholar, Sinta, and Web of Science, showed that PBL treatment duration and mathematics topic were the significant factors causing the heterogeneity of primary students’ MCTS. However, PBL class capacity was not a significant factor causing the heterogeneity of primary students’ MCTS. Thus, primary school mathematics teachers should consider PBL treatment duration established and mathematics topics selected in cultivating primary students’ MCTS by implementing PBL.]]>
<![CDATA[Problem-based learning: Its effect on higher-order mathematical thinking skills in terms of student's initial abilities and mathematical beliefs ]]>
<![CDATA[Dion Aris Simanjuntak]]>;
<![CDATA[Makmuri Makmuri]]>;
<![CDATA[Wardani Rahayu]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.10137
<![CDATA[The higher-order thinking ability of students in Indonesia is still in the low category. This research aims to see the effect of the application of a problem-based learning model on higher-order mathematical thinking skills in terms of student's initial abilities and mathematical beliefs. This research uses a quasi-experimental design with a Non-Equivalent Control Group Design. Data on students' higher-order mathematical thinking skills were taken using a test instrument. This research was conducted at SMP Negeri 27 Jakarta with a total of 165 students obtained from cluster random sampling. Based on the analysis of the three-way ANOVA test, it was found that the problem-based learning model had a positive effect on students' higher-order thinking skills. Problem-based learning model gives better results than conventional learning models. This also applies to students with the initial ability and mathematical beliefs in the high category. Problem-based learning can be an alternative for teachers to improve students' higher-order mathematical thinking skills. ]]>
<![CDATA[The development of teaching materials based on problem solving exploration with microsoft kaizala applications ]]>
<![CDATA[Nenden Mutiara Sari]]>;
<![CDATA[Ana Setiani]]>;
<![CDATA[Ina Rinangkit]]>;
<![CDATA[Hanhan Subhan Munawar]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.9253
<![CDATA[The effectiveness of implementing online learning during the COVID-19 pandemic has not been satisfactory in terms of problem-solving abilities. The presentation of teaching materials presented in the online platforms used has not been able to identify the extent of student understanding in problem-solving exploration. Therefore, this research aims to produce Kaizala teaching materials based on problem-solving exploration. The ADDIE (Analysis, Design, Development, Implementation, Evaluation) development model was used in this research to produce these teaching materials. The subjects of this research trial were grade VIII junior high school students in a public school in Ogan Komering Ulu Regency, Palembang. The choice of the place for this research was based on the fact that the mathematics learning carried out at the school was by utilizing social media platforms. The instruments used in this research consisted of validation sheets of material, language, presentation, and problem-solving integration, a questionnaire on the practicality of teaching materials, and a problem-solving ability test to assess the effectiveness of the developed teaching materials. The results showed that: (1) the developed teaching materials were in the valid criteria; (2) the practicality of the developed teaching materials are at very high and high criteria; (3) The developed teaching materials also meet the criteria of effectiveness, whereas many as 82 percent of the test subjects obtained a score of not less than 75 and the effect size value belongs to the large category. Thus, it can be concluded that the developed teaching materials are suitable for supporting and facilitating students in problem-solving exploration activities.]]>
<![CDATA[Rasch model item response theory (IRT) to analyze the quality of mathematics final semester exam test on system of linear equations in two variables (SLETV) ]]>
<![CDATA[Adilla Desy Rizbudiani]]>;
<![CDATA[Amat Jaedun]]>;
<![CDATA[Abdul Rahim]]>;
<![CDATA[Arief Nurrahman]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.9939
<![CDATA[A high-quality test has a balanced level of difficulty and can be completed by the respondent with their level of abilities. This study analyzed the test instrument used to measure students' mathematics abilities in the semester final exam on System of Linear Equations in Two-Variables. The purposive sampling technique was applied to select the respondent students (N=195). The test items were twenty multiple-choice questions. The researchers performed the data analysis using Rasch model Item Response Theory (IRT) approach with the QUEST program. The analysis revealed that the twenty items’ validity matched the Rasch model with a range of INFIT MNSQ values between 0.89 – 1.17. Items on the final semester exam can be used based on the estimated OUTFIT t-value less than equal to 2.00. The OUTFIT t analysis obtained nineteen qualified items and one unqualified item. ]]>
<![CDATA[Higher thinking and digital literacy: Empowering technology for pre-service mathematics teacher ]]>
<![CDATA[Wanda Nugroho Yanuarto]]>;
<![CDATA[Anton Jaelani]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.9637
<![CDATA[Teachers play a more significant role as a symbol of teaching success. Teachers who hold a more potential digital literacy in education teach mathematics with patterns and procedures, leading to practical teaching mathematics. Influential digital literacy and higher thinking are not possible when teachers do not use technology to understand the concept of mathematics. Therefore, teachers are required to improve their technical abilities and higher thinking in mathematics learning. This research used a cross-sectional quantitative research. This research uses statistical analysis of the Kaiser Meyer-Oikin Test (KMO) and the Barlett's Test to obtain exploratory factor analysis. Subsequently, the analyzed using confirmatory factor analysis and structural equation model with Analysis of Moment Structure (AMOS). The purpose of this research is to provide an overview of the relationship between higher thinking skills and digital literacy. The review discoveries show that teachers' digital literacy has a more significant impact on the use of technology in the classroom, and teachers' higher thinking in the role of technology will encourage teachers to use more technology in their practical teaching. Teachers need to broaden their perspectives on the ability and quality of mathematics teaching that is more easily changed by changing practical instruction in the classroom. One of the reasons mathematics teachers still apply traditional teachings is the lower thinking and low level of digital literacy. Teachers are not capable of teaching the concept of mathematics with technology to students.]]>
<![CDATA[Sub-exact sequence of rough groups ]]>
<![CDATA[Nevi Setyaningsih]]>;
<![CDATA[Fitriani Fitriani]]>;
<![CDATA[Ahmad Faisol]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.8917
<![CDATA[Rough Set Theory (RST) is an essential mathematical tool to deal with imprecise, inconsistent, incomplete information and knowledge Rough Some algebra structures, such as groups, rings, and modules, have been presented on rough set theory. The sub-exact sequence is a generalization of the exact sequence. In this paper, we introduce the notion of a sub-exact sequence of groups. Furthermore, we give some properties of the rough group and rough sub-exact sequence of groups. ]]>
<![CDATA[Designing interactive games for improving elementary school students’ number sense ]]>
<![CDATA[Neni Hermita]]>;
<![CDATA[Jesi Alexander Alim]]>;
<![CDATA[Zetra Hainul Putra]]>;
<![CDATA[Peggi Muharrani Gusti]]>;
<![CDATA[Tommy Tanu Wijaya]]>;
<![CDATA[Jerito Pereira]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.9983
<![CDATA[Number sense is an essential primary mathematics material in elementary school that students must master. Learning media may be utilized in elementary schools' teaching and learning process to engage and inspire students to participate in learning activities, particularly mathematics. Therefore, the researchers designed an interactive game using Genially to improve students' number sense. The ADDIE development model was applied in the research and development procedure. In this research, the ADDIE development model began by analyzing problems related to the mathematics learning process in elementary schools, analyzing the environment and work situation, designing an interactive game, developing the game based on validation results from three media experts and two concept experts, and conducting a one-on-one trial. The product feasibility was tested on 46 students who were divided into two classes. Class B served as the experimental class, while Class A served as the control class. The interactive game's validation findings showed that the developed interactive learning media was practical and useful. As a result of the implementation, the experimental class students' grasp the material better than the control class. ]]>
<![CDATA[Error analysis of prospective mathematics teachers in solving of applying radian measurement problem in trigonometry courses ]]>
<![CDATA[Yayan Eryk Setiawan]]>;
<![CDATA[Surahmat Surahmat]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.9874
<![CDATA[This research aims to describe the mistakes of the prospective teachers in solving the application of radian measurement problems and their causes. This type of research is qualitative descriptive research with a case study approach. The types of data collection in this research consisted of the results of the subject's work and transcripts of interviews with research subjects. By following the type of data, this research instrument consists of one question about the problem of applying radian measurement and interview guidelines developed by the researchers. Data analysis of the subject's work is carried out by classifying the types of errors to know the types of errors that arise in solving the problem of applying the radian measurements. While the transcript analysis of the interview results was carried out by coding the words to determine the factors causing the errors that appeared. The results of the research indicate that the error in solving the problem of applying the radian measurement are misconceptions and factual errors. This misconception is generally caused by intuitive thinking, while this factual error is generally caused by not paying careful attention to the information in the question. The solution to these errors is to analyze the elements of the circle that are interconnected in solving the problem of applying the radian measurements and to be careful in writing the information that is known in the question. ]]>
<![CDATA[Statistical bias correction on the climate model for el nino index prediction ]]>
<![CDATA[Sri Nurdiati]]>;
<![CDATA[Ardhasena Sopaheluwakan]]>;
<![CDATA[Yoga Abdi Pratama]]>;
<![CDATA[Mohamad Khoirun Najib]]>
<![CDATA[ Al-Jabar: Jurnal Pendidikan Matematika Vol 12, No 2 (2021): Al-Jabar: Jurnal Pendidikan Matematika ]]>
Publisher : <![CDATA[Universitas Islam Raden Intan Lampung, INDONESIA ]]>
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DOI: 10.24042/ajpm.v12i2.8884
<![CDATA[El Nino can harm many sectors in Indonesia by reducing precipitation levels in some areas. The occurrence of El Nino can be estimated by observing the sea surface temperature in Nino 3.4 region. Therefore, an accurate model on sea surface temperature prediction in Nino 3.4 region is needed to optimize the estimation of the occurrence of El Nino, such as ECMWF. However, the prediction model released by ECMWF still consists of some systematic errors or biases. This research aims to correct these biases using statistical bias correction techniques and evaluate the prediction model before and after correction. The statistical bias correction uses linear scaling, variance scaling, and distribution mapping techniques. The results show that statistical bias correction can reduce the prediction model bias. Also, the distribution mapping and variance scaling are more accurate than the linear scaling technique. Distribution mapping has better RMSE in December-March, and variance scaling has better RMSE in April-June also in October and November. However, in July-September, prediction from ECMWF has better RMSE. The application of statistical bias correction techniques has the highest refinement in January-March at the first lead time and in April at the fifth until the seventh lead time. ]]>
