Jurnal Tadris Matematika
ISSN / EISSN : 2621-3990 / 2621-4008
Published by: Martabat : Jurnal Perempuan dan Anak (10.21274)
Total articles ≅ 61
Latest articles in this journal
Jurnal Tadris Matematika, Volume 4, pp 59-76; https://doi.org/10.21274/jtm.2021.4.1.59-76
Problem-solving abilities have an important role in learning, especially in solving math problems, one of which is in circle material. This study aims to describe the mathematics problem solving process of junior high school students in solving circle problems through the process of solving problems in IDEAL. The approach used is a qualitative approach with a descriptive type. The sampling technique used in this research is purposive sampling technique. The results showed that, based on the problem-solving process, each subject had a different problem-solving process. S-1 with the category of completely solving problems fulfills the indicators in solving IDEAL problems. S-2 with the category of correct but not perfect does not yet fulfill the IDEAL problem-solving process. S-2 experienced errors when exploring the strategy and implementing the first problem strategy so that the final result was not in accordance with the objectives of the first problem. S-3 with the category of imperfect does not yet fulfill the IDEAL problem-solving process. S-3 only fulfills one IDEAL problem solving indicators, implementing strategies. However, the problem-solving process carried out by S-3 is not exactly in accordance with the objectives of the first and second problems.
Jurnal Tadris Matematika, Volume 4, pp 1-14; https://doi.org/10.21274/jtm.2021.4.1.1-14
Mathematics learning in elementary schools frequently encountered obstacles in material delivery. It was due to the abstract concepts of mathematics and the character of students who entered the concrete operational phase. Ethnomathematics learning could become an effort to overcome those obstacles. The purpose of this study was to determined the effectiveness of learning ethnomathematics "engklek-game" on the understanding of geometry concept for third-grade students of SDN 4 Sepanjang Glenmore. This study used a mixed-method approach with the type of experimental research one-group pretest-posttest design. Data collection techniques were through written tests and interviews. The quantitative data were analyzed using descriptive analysis and used paired sample t-test. The qualitative data was analyzed by reducing the data, presenting the data, and drawing conclusions. The results of the study showed that learning ethnomathematics "engklek-game" obtained Sig. (2-tailed) of 0.000, so that it had a significant effect on the understanding of the geometry concept of students in grade III SDN 4 Sepanjang Glenmore. Based on the results of the interview, it found that the student response was good. Teachers stated that students were enthusiastic during the learning, which led to an increase in learning outcomes before and after learning ethnomathematics "engklek-game."
Jurnal Tadris Matematika, Volume 4, pp 15-30; https://doi.org/10.21274/jtm.2021.4.1.15-30
This study aims to describe the creative thinking abilities of students based on their level of creative thinking in solving math problems in the context of covid 19. Data collection was carried out by providing a test for solving mathematics problems in the context of Covid 19. Data analysis techniques were data reduction, data presentation, and conclusion drawing. Data analysis is to see how the student is solving problems with what ideas can be given. The research subjects were four students with different levels of creative thinking, then interviewed how the students completed these problems. The results showed that the subject at level 0 (not creative) only gave one answer and one way of solving the problem. Subjects with creative thinking level 1 (less creative), able to produce two different answers, and able to present data in two ways of presenting data, but only one is correct. Then the subject with level 2 (creative enough), can give one answer correctly and two ways of presenting the data correctly. While the subject with level 3 (creative) thinking can produce two different answers correctly and two ways of presenting data correctly.
Jurnal Tadris Matematika, Volume 4, pp 41-58; https://doi.org/10.21274/jtm.2021.4.1.41-58
The results of observations on April 15, 2019, at SMP Negeri 1 Peureulak, East Aceh District, and the 2017/2018 National Examinations showed that students experienced difficulties in geometry, so there was a need for teaching materials in the form of LAS (Student Activity Sheets). This development aims to determine that teaching materials in the form of LAS based on Acehnese local wisdom are valid, practical, and effective, and also determine student learning outcomes. This research is a development research using the ADDIE model (Analyze, Design, Development, Implementation, and Evaluation). The subject of the trial in this study was grade VII-1 students of SMP Negeri 1 Peureulak, East Aceh District. Questionnaires, observations, interviews, and tests are used as data collection techniques and instruments in this research. The data analysis in this study is descriptive analysis using the preparation/development of the LAS product variable and the resulting LAS quality variable. As for student learning outcomes in using LAS can be seen from the results of the LAS analysis, which includes student learning outcomes as one of the effectiveness aspect of LAS and test data on learning outcomes. Based on the results of the analysis, it can be concluded that the teaching materials in the form of LAS based on Acehnese local wisdom in mathematics learning especially geometry material in Junior High Schools are categorized as valid, practical, and effective. Student learning outcomes using the LAS have a mastery score with a score of 86.43.
Jurnal Tadris Matematika, Volume 4, pp 31-40; https://doi.org/10.21274/jtm.2021.4.1.31-40
The learning of addition and subtraction that usually be done in sequence impact students’ tendency to separate type of the strategies employ to solve the related problems. In fact, there are a number of situations that can be observed and solved through both lenses. Therefore, in this study we designed a simultaneous addition and subtraction of two-digit numbers learning trajectory. The learning activities were constructed based on Realistic Mathematics Education (RME) Approach. This design study was conducted in three steps consist of preliminary study, teaching experiments, and retrospective analysis. The teaching experiments were done in two cycle, the first was done with four students and the second was done with 33 students in two classes of an elementary school located in Singaraja, Bali. The data related to number sense ability were gathered from observation and students’ written work in solving worksheet and post-test. The collected data were analyzed using constant comparative method. From the results, we found that a simultaneous learning of two-digit numbers addition and subtraction were effectively develop the students’ number sense and encourage the students to develop efficient counting strategies.
Jurnal Tadris Matematika, Volume 3, pp 177-194; https://doi.org/10.21274/jtm.2020.3.2.177-194
One of the objectives of mathematics learning is to improve the mathematical connection abilities on students. However, our observations showed that the mathematical connection abilities on students at MTs Pancasila, Bengkulu was still poor. This encourages the need for a learning strategy which is able to direct students to connect with what they have learned into everyday lives. Therefore, this study aimed to examine students’ ability in understanding mathematical concepts to solve problems related to cubes and rectangular prism topic. This was qualitative study with the REACT strategy. Cubes and rectangular prism was one of the mathematics topics of the basic competencies which have to be mastered by students in grade VIII. The subjects were 20 students who took the test and seven students who were randomly selected to be interviewed. Data collection included test of understanding the concept in essay form which was previously validated. Based on the results of students’ answers, 20 students have been able to connect between mathematics problems with the learned mathematics topic, the density topic in physics with the volume cube topic, and the question problems with everyday issues. However, it was also found that some students answered the questions with different procedures.
Jurnal Tadris Matematika, Volume 3, pp 153-162; https://doi.org/10.21274/jtm.2020.3.2.153-162
The poor problem solving abilities of students is still a scourge in mathematics learning, mainly in terms of solving mathematical story problems. This is because in the case of story problems, students are required to understand the information and the questions in mathematical problems at the beginning in order to create a mathematical model which reflects the problem being solved. This study aimed to examine the achievement and improvement of students’ abilities in solving mathematical story problems about arithmetic sequences and series using LAPS-Heuristic learning model. The study method was the Intact-Group Comparison. The subjects were 43 students who were divided into two groups. The first group received conventional learning, while the other group received LAPS-Heuristic learning. The results showed that both achievement and improvement of students’ abilities in solving mathematical story problems who received LAPS-Heuristic learning model were better than in students’ abilities who received conventional learning.
Jurnal Tadris Matematika, Volume 3, pp 219-228; https://doi.org/10.21274/jtm.2020.3.2.219-228
This study aimed to describe the errors that student made in completing the Two Variable Linear Equation System based on Watson's criteria. This was a descriptive qualitative study involving 29 students consisted of of 12 high-skilled students, 5 medium-skilled students, and 12 low-skilled students in 8th grade at SMP PGRI 6 Malang. The data were obtained from the types of errors that student made using the Two Variable Linear Equation System question tests and the results of the interviews based on the Watson's criteria indicators. The question sets used in this study had been verified by mathematics education lecturers and mathematics teachers. The results of this study were: a) high-skilled students were 'less thorough' at work; (2) medium-skilled students were ‘using data incorrectly at the early stages'; while (3) low-skilled students ‘did not give answers' because they did not understand the concepts of the learning materials. The three types of errors frequently made by students were errors in determining the operation to be used (mhk), errors in determining the stages of solving the question problems (mtl), and errors in drawing conclusions from the final results (kh).
Jurnal Tadris Matematika, Volume 3, pp 195-206; https://doi.org/10.21274/jtm.2020.3.2.195-206
Mathematical communication skill is very important for university students because through communication, students can convey their mathematical ideas, knowledge and arguments. However, the facts show that the written mathematical communication skills of students majoring in Mathematics Education at IAIN Tulungagung are classified as low. The low written mathematical communication skill of students is indicated by errors in writing mathematical symbols on an equation and unsystematic writing of the steps to solve mathematical problems. This study aimed to determine the effectiveness of the Think Pair Share (TPS) learning model using Google Classroom media to improve the written mathematical communication skill of IAIN Tulungagung students. Several previous researchers have reviewed the use of Google Classroom in learning, but it was not integrated with the TPS learning model and did not focus on the influence on students' mathematical communication skill. The study sample was 40 students of the 5th semester in 2019/2020 academic year majoring in Mathematics Education at IAIN Tulungagung who took the Differential Equation course. The data collection was carried out by providing a pretest and posttest before and after implementing the learning using the TPS model with Google Classroom media. Then, the data from the pretest and posttest results were analyzed using the Wilcoxon test because the data were not normally distributed. The results of this study showed that the TPS learning model using Google Classroom media could improve the students' mathematical communication skill.
Jurnal Tadris Matematika, Volume 3, pp 117-130; https://doi.org/10.21274/jtm.2020.3.2.117-130
To improve students' critical thinking skills in solving High Order Thinking Skill (HOTS) questions, the ability to think metaphorically in learning is required. Thus, this study aimed to describe the metaphorical thinking process of students in solving HOTS mathematical problems by PISA approach. In this study, the research method was descriptive with a qualitative approach. The sampling technique was purposive sampling technique, which was a sampling technique suitable for this study. The results showed that based on the works of the three subjects, they had distinct characteristics in solving the problems. S1 who was classified in high category had a metaphorical form by looking at the room from the top side and based on the indicators, S1 had met the metaphorical thinking indicators. S2 who was classified in low category still did not have metaphorical form as compared to the indicators of identifying problems. However, S2 also had gone through metaphorical thinking process when compared to the indicators of connecting and deciding the main concept, as well as was able to illustrate ideas. Meanwhile, S3 who was classified in the middle category had a metaphorical form by only looking at the room side. S3 also had met several indicators of metaphorical thinking.