Indonesian Journal of Mathematics Education

Relationship between Academic Self-Concept and Academic Performance in Mathematics of Secondary School Students in Delta State, Nigeria

Ebele Chinelo Okigbo — 2023-11-05

The study investigated the relationship between self-concept and the academic performance in mathematics of secondary school students in Delta State, Nigeria. Two research questions and two null hypotheses guided the study. A correlation design was adopted in the study. All 42,299 senior secondary two (SS2) mathematics students in the 2021/2022 session in the state made up the research population. A multistage sampling procedure was used to draw 1,650 of these students. The instrument utilized to gather data was the Academic Self-Concept Questionnaire (ASQ), which was validated by three experts. The instrument's dependability was determined using Cronbach’s Alpha, and the result was 0.68. The students’ performances in Mathematics for three terms in SS1 represent their performance scores in mathematics. The collected data were analyzed using Pearson product moment correlation and a t-test for correlation analysis. The results of the study showed a very low positive and no significant relationship between academic self-concept and the performance of secondary school students in mathematics. However, there was a significant difference in relation to mathematics performance between students with a positive self-concept and those with a negative self-concept in mathematics. In light of the results, it was recommended among other things, that mathematics teachers should make a deliberate effort to help students who possess negative self-concepts by conditioning, modeling, and changing their behaviors to perform better in mathematics.

An Analysis of Students’ Mathematical Self-Efficacy Instruments Using Rasch Model

Ahmad Mukhibin — 2023-11-05

The purpose of this study was to determine the quality of mathematics self-efficacy instruments in terms of validity, reliability, undimensionality, ability distribution, and suitability of student responses. Data were obtained by distributing mathematics self-efficacy instruments consisting of 20 statements to 45 seventh-grade students of a private junior high school in Yogyakarta, Indonesia, at the 2022/2023 school year selected through purposive random sampling technique. The data were analyzed using Rasch model with the help of the Ministep application. The results of the analysis showed that the mathematics self-efficacy instrument used was declared valid, with an outfit Z standardized (outfit ZSTD) value of -0.16 for respondents and 0.20 for items, and could be used to measure students' mathematics self-efficacy level with a reliability level reaching a score of 0.54 or in the medium category. The results of the distribution of item abilities show that most students admit to having the fighting power to solve problems that occur, especially in learning mathematics. From the analysis of the suitability of student responses, 18 statements show the suitability between the level of self-efficacy and the responses given by students. While two other statements did not show suitability. Therefore, teachers or other academics can use the self-efficacy questionnaire that has been prepared by researchers because it has met the four criteria for testing instruments.

The Evaluation of Implementation Strengthening Character Education's Program at Junior High School in Sorong Regency

Heny Sri Astutik — 2023-11-06

Strengthening Character Education (PPK) is one of the Nawacita points that was proclaimed so that the national character education process must be carried out actively by education providers in developing the learning process by carrying out the process of internalization and appreciation of the character values reflected in the curriculum. This research aims to determine teachers' understanding regarding the Strengthening Character Education program, implementation, and results of the PPK program in mathematics subjects at Sorong Regency Middle Schools, Southwest Papua, Indonesia. This was evaluation research using Stake’s Countenance Evaluation Model. The research subjects were all junior high school teachers and students in Sorong Regency. The research sample was determined using the purposive sampling technique. Three schools were selected from all junior high schools in Sorong Regency, one each with A, B, and C accreditation, with a total sample of 695 consisting of 648 students and 47 teachers. The evaluation of program implementation was reviewed based on teachers' understanding, implementation, and results of implementing the PPK program. Data collection was carried out through documentation, interviews, and questionnaires. The study showed that 1) teachers' understanding and planning regarding the PPK in mathematics subjects is in the good category; and 2) the implementation of the PPK in mathematics subjects is still not running optimally. These results can be used to recommend improvements to the character education program.

The Analysis of Student Errors in Solving Algebraic Math Test Based on TIMSS

Andi Dian Angriani — 2023-11-06

The low percentage obtained by students in solving TIMSS problems, especially in the algebra material domain, shows that there are several mistakes that students often make in solving TIMSS-type problems. This study aims to examine students' errors in completing algebraic mathematics tests using the TIMSS (Trends in International Mathematics and Science Study). This was a qualitative descriptive research project in which students of a state junior high school in Sinjai, Sulawesi Selatan, Indonesia, in class VIIIA were the subjects. The research's study instruments included diagnostic tests and interview protocols, and data analysis procedures were separated into three parts: data reduction, data presentation, and conclusion, which involves drawing or verifying. The researchers discovered four kinds of students’ errors in completing algebra tests based on TIMSS that were connected to Newman's category: understanding question errors, transformation errors, process skill errors, and answer writing errors. Furthermore, the cause of errors in answering algebra questions based on TIMSS was that students do not pay more attention when writing information based on the following questions; they do not master the material related to the questions; they have a limited understanding of the material related to the questions; they also forget the concept of multiplication; they do not follow the procedures appropriately; and they do not re-check the answers. As a result, teachers must create TIMSS-based questions to help students improve their mathematical abilities.

The Exploration of Ethnomathematics Houses Malay ‘Limas Potong’ The Batam Islands of Riau

Fitri Qoriaturrosyidah — 2023-11-07

Ethnomathematics is the study of how a group of individuals in a particular culture understand, communicate, and use cultural ideas and practices that researchers identify as mathematics. To return cultural heritage of traditional house in Batam, Riau Islands, and to further explore the idea of mathematical geometry inherent in the traditional house, so this research aims to explore the ethnomathematics in the Malay Traditional House 'Limas Potong'. This study applied a qualitative approach that was conducted in the Malay Traditional House 'Limas Potong', specifically in the Kampung Melayu neighborhood of Batam City's Nongsa District in the Riau Archipelago. The data used in this research was obtained from these explorations or already-published articles. Observation, interviews, and documentation were used as data collection methods. In this research, data analysis was carried out in two stages: data analysis in the field and data combining. According to the research findings, each decorative and structural part of the Malay Traditional House 'Limas Potong' incorporates mathematical ideas in geometrical shapes and components. Measurement, architectural design, mathematics learning, and application of learning are all related to ethnomathematics in the Malay Traditional House 'Limas Potong'. The construction of the Malay Traditional House 'Limas Potong' can be utilized as a learning resource for students, especially in geometry material, according to some mathematical ideas contained in the structure of the traditional house. Ethnomathematics exploration will inspire teachers to make this a new alternative to developing creativity in students' mathematics learning.

Design and Validation of Augmented Reality-Based Student Worksheets for Polyhedra Material in Improving Students’ Spatial Abilities

Sri Winarni — 2023-11-07

This study aims to develop and test the quality of augmented reality-based student worksheets (LKPD) that can improve students' spatial abilities. This type of research is development research using the Plomp development model, which consists of the initial investigation stage, design, realization, tests, evaluations, revisions, and implementation. The data collection techniques used in this study were observation, interviews, questionnaires, and tests. The instruments used were expert validation sheets, observation sheets, interview guidelines, teacher and student response questionnaires, learning outcomes tests, pre-test questions, and student spatial ability post-test questions. The validation results by design experts and Student Worksheet material experts were 89.09% and 92%, respectively, in the very valid category. In addition, the practicality of Student Worksheets seen from the teacher response questionnaire of 80.00% was classified as practical, and the score of the student response questionnaire in small group trials with 9 students was 81.11% in the very practical category. The effectiveness was shown by 77% of students completing the learning outcomes test, 19 students experiencing moderate spatial ability improvement, and 3 students experiencing high spatial ability improvement, with a percentage of N-Gain effectiveness obtained 61.8% with moderately effective criteria. Based on the results of the study, it can be concluded that augmented reality-based Student Worksheets for polyhedra materials that have been developed are suitable for use as learning teaching materials to improve students' spatial abilities.

Pedagogical Competence of Teachers and Online Engagement of Junior High School Students in the New Normal

P. J. D. Mamacos — 2023-11-07

Most students are struggling in this new learning method and their engagement in learning math is deemed to be adversely affected due to limited interactions and accessibility in an online mode of learning, thereby affecting their motivation and achievement. Hence, this study looked into the domain of pedagogical competence of teachers that significantly influence students’ online engagement in the new normal. This study utilized non-experimental quantitative research design employing a descriptive-correlation technique to 100 junior high school students of the research locale identified through random sampling method. The research instrument of this study used two sets of questionnaires in accordance with its declared variables. Results of the data were analyzed using Mean, Standard Deviation, Pearson r correlation, and Linear Regression analysis. Descriptive results of the study revealed that teachers’ pedagogical competence and online engagement of the respondents both obtained a high descriptive level. Furthermore, inferential results of the study suggested there is no significant relationship between teachers’ pedagogical competence and online engagement of junior high school students in mathematics. Given these results, it is highly encouraged that the school must have constant teachers’ professional development programs that can strengthen the abovementioned significant pedagogical competence domains affecting the students’ learning engagement.