Jurnal Didaktik Matematika
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Students Anomaly Reasoning in Solving Number Pattern in terms of Gender
Full text linkRelational reasoning plays an important role in helping students to understand mathematical concepts. The student's ability to distinguish patterns or objects is one of the understandings of mathematical concept indicators. The anomaly dimension is part of the relational reasoning that students need to be able to determine a pattern or object in mathematics. This study aims to reveal the student's relational reasoning ability of anomaly dimension in solving number pattern problems in terms of gender differences. The subjects of this study are 52 grade-8 students in one of Muhammadiyah Junior High Schools in Kartasura. We used two similar problems on number patterns to disclose the student's ability to identify the pattern deviation in solving problems. The two selected students had relatively similar in their mathematical abilities. The finding showed that female subject met the three anomaly dimension indicators: identification, interpretation, and adaptation. Conversely, male student cannot fulfill the anomaly indicators. He cannot recognize pattern deviation in the formed mathematical model. He also failed to identify a pattern different from the two problems. Although the subjects interviewed were limited, the finding provided the insightful into the differences in anomaly reasoning abilities in male and female student
Development of Numeracy Problems with the Context of Herbal Medicines in Junior High School
Full text linkIndividuals with low immune systems have a higher impact on the Covid-19 outbreak. Herbal treatment is one of the solutions to reduce the risk of being infected by the virus. However, the public has not yet fully known about herbal medicines in Indonesia. One of the efforts to increase students' knowledge about herbal medicine is by developing numeracy questions in the context of herbal medicine. This study aims to produce valid and reliable numeracy questions in the context of herbal medicine for junior high school students and to find student responses to numeracy questions in the context of herbal medicine. The research method used is a design research type of development study with a Tessmer development model. The results of the study were 16 numeric questions with the context of herbal medicines that were valid in terms of content, construct, and language based on the validator's assessment, while nine of the 16 questions met empirical validity. The numeration question set in the context of herbal medicine has a high-reliability value. Based on the students' responses, the set of questions developed positively impacted students. The teacher can use these questions as an instrument to train students' numeracy ability
Problem Solving Ability According to Polya on System of Linear Equations in Two Variables Based on Student Learning Styles
Full text linkThe ability to solve mathematical problems can be said to be still low. Learning style is one of the factors that affect it. The purpose of the research conducted is to describe mathematical problem-solving skills based on learning styles. This research uses a type of research in the form of qualitative descriptive research. The subjects used were 3 students of class VIII with each having a different learning style. The selection of subjects for as many as three students in this study was on purposive sampling. This study used instruments in the form of questionnaires, tests, and interviews. The techniques used when analyzing data are to carry out the stages of data reduction, data presentation, and drawing conclusions. Checking the validity of the data using triangulation techniques. Troubleshooting using Polya steps. This study shows several results as follows: (1) subjects who have a visual learning style are able to understand problems, devise a plan, carry out the plan, and looking back, (2) subjects who have an auditory learning style are able to understand problems, devise a plan, carry out the plan, and looking back, and (3) subjects who have a kinesthetic learning style do not understand the problem, devise a plan, carry out the plans, and do not looking back
Developing RME-Based Learning Trajectory for Teaching Addition to A Dyscalculia Student in Elementary School
Full text linkThis research aimed to design an RME-based learning trajectory for a dyscalculia student to learn the addition of whole numbers. The research used design research approach that consists of three phases: preparing for the experiment, conducting the experiment, and retrospective analysis. This research's data collection techniques were observations, interviews, videotaping, and analyzing the student works. The main result of this research is the learning trajectory for teaching addition of whole numbers to a dyscalculia student using RME approach. The series of activities in the learning trajectory are addition of whole numbers between 1 and 10 by combining the objects, addition of whole numbers between 1 and 10 using number relations, addition of whole numbers between 1 and 20 using number relations, and finding the concept of place value of tens and ones in addition of numbers. This research also shows the cognitive improvement of dyscalculia student in learning the addition of whole numbers. Learning activities carried out by the dyscalculia student help him to shif from informal knowledge to formal mathematical knowledge in order to understand the concept of addition of whole numbers. It makes dyscalculia student has number sense, number construction, and number relation abilities which increase significantly in the learning process
Development of Application Based on Augmented Reality to Improve Student's Spatial Ability
Full text linkTechnology has become a crucial part of the learning process and a facilitator of the interaction between students and teachers. Spatial ability is a crucial ability in mathematics learning and success in STEM. In this case, Augmented Reality (AR) in mathematics learning can facilitate the abstraction of mathematics that represents a new representation of mathematics concept. The objectives of this studywere to develop an application using AR which was further used to improve the spatial ability of Junior High School students.Meanwhile, the method used in this study was RD using the ADDIE model and quantitative approach through t-test. In this case, 64 students of 8thgrade in Junior High School were involved as the research samples, where 32 students were in the control class and 32 students were in the experimental class. The results of this study were that the AR application was feasible to use in mathematics learning and its application enabled teacher and students to learn solid geometry using Augmented Reality with the object that can be manipulated, interact in real-time, and measure objects in the real world. It was also obtained that the learning outcomes of students who used the application were higher than the learning outcomes of students who did not use application, indicating that the application could increase stdudents spatial ability
Analysis of Students' Mathematical Connection Ability Through Learning Strategies Based on Local Wisdom
Full text linkStudents' mathematical abilities are still considered low due to the lack of students' mathematical connection abilities. One effort that can be done in overcoming the low ability of students' mathematical connections is to involve the culture around students in the learning process. This study aims to analyze students' mathematical connection ability through the application of learning strategies based on local wisdom a'bulo sibatang, assamaturu, mappesabbi and sipakatau. The research method used is a quantitative quasi-experimental type of nonequivalent control group design. Through purposive sampling technique, it was obtained class XI MIPA 3 (experimental class) and XI MIPA 1 (control class). The instrument used is a test to indicators of mathematical connection ability. The results showed an increase in indicator of mathematical connection ability in the experimental class, namely 88.52% indicator I, 85.35% indicator II and 83.87% indicator III. Meanwhile, in the control class applied problem-based learning strategies only got a score of 65%. Based on the results of the analysis, it can be concluded that local wisdom-based learning in the experimental class is able to improve students' mathematical connection ability better than the control class that applies problem-based learning
Teachers Self-regulation in Solving the Problem with Contradiction Information
Full text linkThe teacher's self-regulation in solving problems with contradictory information needs to be investigated because this certainly has an impact on students' self-regulation abilities. However, research related to this is still limited. Problem with Contradiction Information (PWCI) is appropriate to view self-regulation. This research is a case study which involved teachers in East Java, Indonesia and already have an educator certificate. There are 24 teachers as participants of this research, 14 females and 10 males. The objectives of this study describe how the teacher's response when completing PWCI and how the teacher's self-regulation when solving PWCI. Data were collected through tests and interviews. The results show that (1) There are two types of teacher responses in completing PWCI, the first type is the teacher who answers the questions directly without checking the provided information, the second type is the teacher who is thorough and cross-checks before working on the questions, (2) The emergence of self-assessment teacher regulation when completing PWCI is divided into four, namely, teacher self-regulation appears at the stage of understanding, implementing, re-checking and does not appear when completing PWCI. Most of the teachers are not aware of the contradictions in the questions given
Mathematics Teacher's Response to Blended Learning Hyper content with Hyperlinks as a Limited Face-to-Face Learning Strategy
Full text linkThe need for adaptive learning strategies during limited face-to-face learning inspires this study. The research intends to analyze the responses and implementation plans of mathematics teachers in implementing blended learning hyper content with hyperlinks on linear equation system with two variables (LESTV). The data collection was done through survey involving questionnaires and interview sheets. Data were then analyzed descriptively. The participants were 38 mathematics junior high teachers in Purwakarta, Indonesia. This study shows the enthusiasm and confidence of teachers in implementing blended learning hyper content with hyperlinks, which is undoubtedly a new insight. It is deemed flexible and easy to apply and becomes an alternative during limited face-to-face learning. Mathematics teachers can plan Blended Learning Hyper content with Hyperlinks through various media and topics. Various LESTV problem-solving strategies can give student interest in studying LESTV concepts and solving problems
Metacognitive Approach to Improve Students' Mathematical Problem Solving Skills based on Thinking Styles
Full text linkStudents' thinking styles are important factors for teachers to accommodate all types of students' thinking styles in a learning approach. Therefore, this study aims to determine students' mathematical problem-solving skills from their respective thinking styles using a metacognitive approach. The sample in this study was 60 students of class XII Madrasah Aliyah Negeri Ambon consisting of 31 Mathematics IPA-1 classes as the experimental class and 29 Mathematics IPA-2 classes as the control class. This research is a quasi-experimental study with a pretest-posttest control group design. The research instruments used were tests (pre-test and post-test) and the thinking style instrument. The data were tested by univariate test and t-test. The experimental class concluded; There are differences in the improvement of students' mathematical problem-solving abilities between groups of thinking styles and there is an influence of thinking styles on problem-solving abilities. While in the control class; There is no difference in increasing students' mathematical problem-solving skills between groups of thinking styles, nor is there any influence of thinking styles on problem-solving abilities. These results illustrate that students' mathematical problem-solving skills can be influenced by thinking styles as a result of the learning approach used, namely the metacognitive approach
