Kalamatika: Jurnal Pendidikan Matematika
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STUDENTS’ PERCEPTION TOWARDS THE USE OF GOOGLE CLASSROOM FOR MATHEMATICS ONLINE LEARNING VIEWED FROM STUDENTS’ READINESS
No full textGoogle Classroom is an online learning app that can be used for free and offers many features to support the online learning system and the implementation of Google Classroom must consider the students' readiness in accessing Google Classroom because many students have difficulty in the learning process, which affects the decline in student assignments and exam scores. The purpose of this study was to describe students’ perception towards the use of Google Classroom in mathematics learning in terms of students' readiness to take online learning. This study was conducted using a survey on 91 mathematics education students of STKIP Pamane Talino. The instrument used in this study was a questionnaire. The survey results showed that the level of readiness of students was 74.60% in the very good category. The effectiveness of Google Classroom implementation on online learning was 71.24% (very good); the use of Google Classroom is effective in learning mathematics in terms of students’ readiness for online learning. The results also show that students can access Google Classroom online to ask the tutors, work on assignments and view the answers to their assignments independently and regularly. Students find learning using Google Classroom is effective and fun because students can study material, discuss with teachers, and send assignments remotely
ANALYSIS OF MATHEMATICAL WRITING ERRORS RELATED TO THE ANGLE OF TRIGONOMETRI FUNCTIONS
Full text linkMathematical writing errors are often made by students, especially when writing mathematical expressions on the angle of trigonometric functions. One of the causes of this error is that students do not pay close attention to the difference between radians and degrees when writing questions or writing answers. These mathematical writing errors were made mainly by students who were oriented towards the result of the answer to a question, without paying attention to good and correct writing rules. One form of writing errors in mathematical expressions of trigonometric functions is writing y = sin (x + 45), which is considered the same as writing y = sin (x + 45o). If they are asked to compare the graphical form of the function of the two mathematical expressions in the same image, the writing error will be recognized and seen. Counterexamples and technology in learning mathematics can help students understand and correct errors in writing mathematical expressions of trigonometric functions
MARGINAL REGIONS MATHEMATICS TEACHERS’ PERCEPTION OF THE USE OF MANIPULATIVE TOOLS
No full textManipulative tool is one of the learning media most likely to be used by teachers, including those in marginal regions. This study aimed to determine the perception of mathematics teachers in marginal regions toward using manipulative tools as learning media. This study used surveys designed with two domains: the use of manipulative tools as learning media and the importance of manipulative tools as learning media. The sample for this study comprised 81 teachers who were either currently teaching or had previously taught at the elementary, middle, and high school levels in marginal regions. This study found that the manipulative tools mostly used by mathematics teachers in marginal regions are objects obtained from the surrounding environment (used cans, paperboard, coins, rulers, stones, and sticks). This study revealed that the mathematics teacher's perception of manipulative tools as learning media and the importance of manipulative tools as learning media are generally in the medium category
DEVELOPMENT OF LEARNING TRAJECTORY ON THE SET TOPIC FOR 7TH GRADE IN THE CONTEXT OF SEDEKAH LAUT TRADITION
No full textSet is an important topic to be mastered by students because it influences the development of mathematics in daily life. However, many students still have difficulty learning the topic. Therefore, it is necessary to design a learning trajectory using the appropriate approach, context, and media. This research resulted in the learning development using Sedekah Laut context to create meaningful learning and increase students' understanding of sets. The method used in this study was design research proposed by Gravemeijer & Cobb with three stages: preliminary design, experimental design (pilot experiments and teaching experiments), and retrospective analysis. However, this article only presented the results from the Preliminary design stage. The participants involved in this study were 7th-grade students of SMP Negeri 6 Semarang. The resulting hypothetical learning trajectory consists of a series of learning processes: observing context videos to find the concepts of sets, non-sets, empty sets, universal sets, and Venn diagrams; explaining the properties of the set; defining set operations; and solving problems related to sets
THE NEWMAN PROCEDURE FOR ANALYZING STUDENTS' ERRORS IN SOLVING SYSTEMS OF LINEAR EQUATIONS
Full text linkThis study aimed to analyze students’ errors in problem-solving activities for systems of linear equations. The descriptive qualitative method was adopted and applied to obtain and process the research data. Research subjects were selected using the purposive sampling technique. Three participants were chosen according to their mathematical proficiency levels. Data collection was conducted by tests to measure students’ problem-solving abilities and semi-structural interviews to gather qualitative information about students’ errors in solving systems of linear equations. The interview results were analyzed using narrative analysis to obtain accurate conclusions. The study found that (1) low-ability students tend to perform error at the comprehension stage, (2) medium-ability students are likely to perform error at the transformation stage, and (3) high-ability students tend to perform error at the process skills stage. The solutions based on the ability level are: (1) low-ability students are required to read the question carefully, educators should emphasize the problem-solving procedure, and students should strengthen their understanding of the prerequisite learning content in problem-solving; (2) medium-ability students have to focus on the emphasis and development of their skills in understanding the language of a problem and balance with improving their understanding of learning content and contextual exercising; (3) high-ability students are provided with exercises that can improve their counting speed and accuracy of the subject in resolving a problem
THE EFFECT OF ONLINE LEARNING AND DIRECT FACE-TO-FACE TO MATHEMATICS LEARNING ACHIEVEMENT
No full textThis study aimed to determine the effect of learning media on student achievement in mathematics. The learning media used include learning using Zoom Meeting, Google Classroom, and face-to-face in class. The research method used was an experiment with a quantitative approach. The samples were 30 Year 9 students divided into three different treatments in learning: learning using Zoom Meeting, learning using Google Classroom, and face-to-face learning in class. The instrument used was a description of the essay questions used to measure student achievement. Data were analyzed using one-way ANOVA and Tukey's - HSD test. The results showed a significant or different effect between the use of learning media on student achievement (Fcount = 3.665 > Ftable = 3.35) of α= 5%. Furthermore, further tests were carried out using the Tukey's - HSD test to examine which learning media had a different effect. Further test results showed that learning using Google Classroom with face-to-face learning in the class had a different effect on students' mathematics learning achievement. Meanwhile, student achievement between Zoom Meeting and face-to-face learning and Zoom meeting and Google Classroom was not significantly different. The average student learning achievement in face-to-face learning was greater than those using Google Classroom
HIGH SCHOOL STUDENTS’ ATTITUDES TOWARDS MATHEMATICS LESSONS USING THE PQ4R STRATEGY AND PROBLEM POSING MATHEMATICAL PROBLEMS
No full textThis study aimed to examine students 'attitudes or perceptions of mathematics learning, attitudes towards the Application of PQ4R (Preview, Question, Read, Reflection, Recite, Review) Learning Strategies, and problem posing mathematical problems. Data were analyzed using a qualitative descriptive data analysis, and quantitative analysis was carried out using the Likert scale. The population in this study were Year 11 students in the city of Bandung, and the sample was one of Year 11 Social classroom as the experimental class, selected by purposive sampling. The sample was given treatment using PQ4R learning. The results showed that students taking PQ4R learning had significant attitudes towards mathematics. This can be seen from the high interest and motivation. Student responses to PQ4R learning and questions were also very good. This provides good information about students' attitudes towards learning mathematics in high school so that they can apply good and correct mathematics. Learning mathematics requires an analysis of students' attitudes to feel happy and motivated in learning mathematics on an ongoing basis
THE VALIDITY AND RELIABILITY OF INSTRUMENTS FOR MEASURING ELEMENTARY SCHOOL STUDENTS' EARLY MATHEMATICAL ABILITY
Full text linkTeachers need to understand students' early mathematical abilities before continuing learning on the next topic to retain the knowledge. This study aims to produce appropriate and reliable instruments for quality research related to early mathematical abilities. This research implemented R&D. The subjects were 113 sixth-grade students of the elementary school in Karawang. The instrument used was a test to measure early mathematical ability. Validity and reliability tests indicated that the five initial mathematical ability test items were considered valid, with r count > r table and p-value <0.05. The Cronbach's Alpha value was 0.875 (above 0.8 or high reliability). Thus, the five items of the early mathematical ability instrument on the volume of cubes and rectangular prisms can be used for further research to measure the same variables accurately. The results are not significantly different for the same subject even though the time and place are different
ANALYSIS OF MATHEMATICS PROBLEMS IN THE 2013 CURRICULUM AND CAMBRIDGE CURRICULUM MATHEMATICS TEXTBOOKS
No full textSeveral factors influence the success of learning; one of them is the quality of textbooks. Textbooks have a pivotal role in learning, namely, representing the teacher's explanation in front of the class. Curricula have continuously changed because they are far from the expectations. In Indonesia, many schools have implemented an international curriculum to improve school quality. One of the curricula used is the Cambridge curriculum. This study analyzed the types of problems in the Cambridge and 2013 curriculum mathematics textbooks, especially on quadratic equations. This research utilized a six-dimensional analysis method which consists of mathematical activities, complexity level, answer form, contextual features, response types, and mathematical features. Furthermore, the data collection technique was carried out by analyzing and describing the types of questions in the 2013 curriculum and the Cambridge curriculum mathematics textbooks. The analysis focused on the quadratic equation topic in the 2013 curriculum and the Cambridge curriculum mathematics textbooks. The results shows that there is no difference between the types of problems in the 2013 curriculum and the Cambridge curriculum mathematics textbooks for quadratic equation topics. The framework of this study could be a reference for further research and used by mathematics textbook writers to create more diverse types of questions.  
STUDENT EVALUATION MATHEMATICAL EXPLANATION IN DIFFERENTIAL CALCULUS CLASS
Full text linkThis study aimed to determine that the failure of students to evaluate mathematical explanations based on mathematics is influenced by sociomathematical norms, teaching authority, and classroom mathematics practice. The research method used is the case study method. The research data were obtained from inside and outside the research class. The data in the research class were in the form of field notes, video recordings of the class, video recordings of student group work, and student work. Data outside the research class is the result of interviews with three interview subjects. By studying the three evaluation methods students used in evaluating explanations, it was found that each student applied a different evaluation method at different times. The three evaluation methods contributed to some of the difficulties students experience in evaluating their mathematical descriptions. The results indicate that the failure of students in evaluating explanations is not solely due to errors in choosing the method, approach, or learning model used but can be caused by sociomathematical norms, authority, and classroom mathematics practices applied in the classroom