Articles
<![CDATA[Problem-Based Learning Assisted by GeoGebra to Improve Students’ Mathematical Understanding ]]>
<![CDATA[Keni Eviliasani]]>;
<![CDATA[Jozua Sabandar]]>;
<![CDATA[Nelly Fitriani]]>
<![CDATA[ AL-ISHLAH: Jurnal Pendidikan Vol 14, No 1 (2022): AL-ISHLAH: Jurnal Pendidikan ]]>
Publisher : <![CDATA[STAI Hubbulwathan Duri ]]>
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DOI: 10.35445/alishlah.v14i1.1092
<![CDATA[This study aimed to develop teaching materials to improve the mathematical understanding of the Pythagorean theorem material by using the development of teaching materials through the GeoGebra-assisted Problem Based Learning (PBL) approach. This study uses the Borg Gall model's research and Development (RnD) development method with the Borg Gall model. The researchers collected data through observation, questionnaires, interviews, and tests of mathematical understanding abilities. The population in this study was 80 students of Madrasah Tsanawiyah class VIII, with 30 students in a limited trial and 50 students in a broad trial. Data is processed using descriptive and inferential statistics. This research produced a teaching material with a Problem Based Learning approach assisted by Geogebra software on the Pythagorean theorem material and indicates that there is an increase in students' mathematical understanding abilities after being given learning using GeoGebra-assisted PBL approach teaching materials.]]>
<![CDATA[RELATIONSHIP BETWEEN MISCONCEPTION AND MATHEMATICAL ABSTRACTION OF GEOMETRY AT JUNIOR HIGH SCHOOL ]]>
<![CDATA[Gida Kadarisma]]>;
<![CDATA[Nelly Fitriani]]>;
<![CDATA[Risma Amelia]]>
<![CDATA[ Jurnal Infinity Vol 9, No 2 (2020): VOLUME 9, NUMBER 2, INFINITY ]]>
Publisher : <![CDATA[IKIP Siliwangi and I-MES ]]>
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DOI: 10.22460/infinity.v9i2.p213-222
<![CDATA[This study aims to examine the misconceptions that often occur in junior high school students on the concept of geometry based on abstraction level. The research method is qualitative with a case study design. Subjects in this study are 27 students of the 3rd grade of junior high school students, who had to learn all the concepts that will be appeared on the test. Material that will be given on the test of this research is the concept of Triangle, Quadrilateral, Flat Side Geometry and Curved Side Geometry. This research takes a place at one of the junior high schools in Cimahi. The instrument in this study is a diagnostic test (to find out the types of students’ misconception), mathematical abstraction tests (to determine the level of abstraction) and interview rubrics. Misconceptions produced by students are closely related to students’ mathematical abstractions, the higher the level of abstraction ability, the more students away from misconceptions. The topic taken in this study is the topic of basic geometry, the results can be a source of information about the types of misconception that often occur in students, and how the solution so that these misconception do not re-occur.]]>
<![CDATA[Mathematical Abstraction of Year 9 Students Using Realistic Mathematics Education Based on the Van Hiele Levels of Geometry ]]>
<![CDATA[Heris Hendriana]]>;
<![CDATA[Nelly Fitriani]]>
<![CDATA[ Didaktik Matematika Vol 6, No 1 (2019): Jurnal Didaktik Matematika ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.24815/jdm.v6i1.13285
<![CDATA[Previous research regarding abstraction has not discussed abstraction qualitatively based on van Hiele levels. Thus, it is necessary to study abstraction analysis based on van Hiele levels through Realistic Mathematics Education (RME) approach. The purpose of this research was to analyze mathematical abstraction based on van Hiele levels of geometry (VHLG) through RME and traditional learning approach reviewed from the levels of prior knowledge. This research employed a descriptive qualitative method involving Year 9 junior high school students as the subjects. The instruments were a mathematical abstraction test, van Hiele geometry test, and interview guidelines. The results of the high- and medium-ability students in the classroom using RME approach showed that VHLG was at the Deduction level and the abstraction ability was dominated by Empirical and Reflective Abstraction, whereas the low-ability students are at the level of Abstraction, they had imperfect Empirical and Reflective Abstraction. As for the high-ability students in the traditional learning classroom, the VHLG was at the level of Abstraction; their Reflective Abstraction was at the Representation level. While concerning the low- and medium-ability students, the VHLG was at the Analysis level; they mastered the Reflective Abstraction at the level of Recognition. This study indicates that the RME approach can trigger the development of mathematical abstraction, and accelerate the van Hiele levels of geometry progress.]]>
<![CDATA[PENGEMBANGAN DESAIN DIDAKTIS UNTUK MENGATASI LEARNING OBSTACLE PADA MATERI DIMENSI TIGA ]]>
<![CDATA[Nelly Fitriani]]>;
<![CDATA[Gida Kadarisma]]>;
<![CDATA[Risma Amelia]]>
<![CDATA[ AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 9, No 2 (2020) ]]>
Publisher : <![CDATA[UNIVERSITAS MUHAMMADIYAH METRO ]]>
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DOI: 10.24127/ajpm.v9i2.2686
<![CDATA[This research is motivated by the many learning obstacles experienced by students in understanding the three-dimensional material, while the teaching materials used by teachers are inadequate because they do not pay attention to student needs. Therefore, this study aims to determine the characteristics of Learning obstacles that occur in students in the three dimensional material as well as to find out the didactic designs used in overcoming Learning obstacles. Didactic design developed in the form of teaching materials are arranged based on four things, namely learning obstacle that occurs, learning trajectory, didactical situation theory and the process of abstraction. The research method used is a qualitative method with a didactic design approach. The subjects in this study were 35 students of class X SMAN 4 Cimahi, with instruments in the form of Respondents' Ability Tests about 5 questions and validation sheets of teaching materials from expert validators. The results showed that the characteristics of Learning obstacle that occurred in the three dimensional material were Ontogenic Obstacle, Didactical Obstacle and Obstacle Epistemology. Then a didactic design was made which was implemented as many as 6 meetings with a validation percentage of 69.5% expert validator, a retrospective analysis was carried out to analyze the students' responses to the didactic hypothesis design, because there were still mismatches of student responses and obstacle epistemology was still found. the validation percentage increased to 76% with a valid category. Based on the implementation, this didactic design can overcome the learning obstacles experienced by students in the three dimensional material. The implications of this study, the good teaching materials provided to students must be arranged based on the needs of students which, including analysis of learning obstacles and student learning trajectories so that learning objectives can be achieved.]]>
<![CDATA[ANALISIS KESULITAN SISWA PADA MATERI BANGUN RUANG SISI DATAR ]]>
<![CDATA[Murni Chintia]]>;
<![CDATA[Risma Amelia]]>;
<![CDATA[Nelly Fitriani]]>
<![CDATA[ JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 4, No 3 (2021): JPMI ]]>
Publisher : <![CDATA[IKIP Siliwangi ]]>
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DOI: 10.22460/jpmi.v4i3.p%p
<![CDATA[This research was conducted with the aim of analyzing the difficulties experienced by students in working on BRSD material problems. This is taken from the cognitive indicators on the bloom taxonomy which are indicators of its difficulty. This research uses a qualitative descriptive method. The data collection technique is by giving questions to students. Furthermore, students' answers are analyzed to determine the extent of the difficulties that occur to students based on the determined indicators. This research was conducted at one of the state junior high schools in Cimahi for the 2020-2021 academic year. The subjects were 20 grade IX students. The instrument inside is a test item with predetermined indicators. The results of the analysis obtained are that there are still students who have difficulty solving indicators of problems that involve cubes. The above is evidenced by the results of the test questions to students where 70% of students experience difficulties with the question indicators as well as the percentage of student answers that are less than the predetermined KKM. The factors that make this indicator experience difficulties are (1) the students' lack of thoroughness in reading, understanding and answering questions; (2) Lack of students' spatial ability to imagine BRSD; (3) Students are accustomed to solving routine problems found in examples.]]>
<![CDATA[ANALISIS PENCAPAIAN SISWA SMP DALAM MENYELESAIKAN SOAL PERSAMAAN LINEAR DUA VARIABEL DI SMPN 1 CAMPAKA MULYA-CIANJUR ]]>
<![CDATA[Ruslan Mubarok]]>;
<![CDATA[Nelly Fitriani]]>
<![CDATA[ JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 3, No 5 (2020): JPMI ]]>
Publisher : <![CDATA[IKIP Siliwangi ]]>
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DOI: 10.22460/jpmi.v3i5.p%p
<![CDATA[This study aims to analyze the achievement of junior high school students in solving the Two Variable Linear Equation System (SPLDV) questions, this material is one of the materials that junior high school students generally lack in power. The subjects of this study were 25 students of class IX-C at SMPN 1 Campaka Mulya-Cianjur, who then took a sample of 6 people representing high, medium, and low ability students for analysis. The method in conducting this research is a case study. The instrument for obtaining the data itself was carried out by a test given to students in the form of a question sheet containing 3 contextual questions with questions that had different difficulty levels. Based on the research that has been done, it turns out that the mistakes of students in solving SPLDV questions are different. From the test results there were 2 students with high abilities, 2 students with moderate abilities, and 21 students with low abilities]]>
<![CDATA[ANALISIS MINAT BELAJAR SISWA SMP DI CIMAHI PADA MATERI BANGUN RUANG SISI DATAR DENGAN BERBANTUAN SOFTWARE GEOGEBRA ]]>
<![CDATA[Muhammad Raka Jaya]]>;
<![CDATA[Nelly Fitriani]]>
<![CDATA[ JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 5, No 3 (2022): JPMI ]]>
Publisher : <![CDATA[IKIP Siliwangi ]]>
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DOI: 10.22460/jpmi.v5i3.9651
<![CDATA[This study aims to analyze students' interest in learning through-assisted learning geogebra. This Research design is a qualitative descriptive research method. The Population of this study were all students of class VIII A at SMP PASUNDAN 3 CIMAHI with the sample used was 15 students. Data collection techniques in this study are Observation, Documentation, Questionnaire sheets and Interviews. The observation instruments and questionnaire instruments in this study were students' learning interest attitudes scale with 18 statements consisting of negative and positive statements about learning using theapplication geogebra. Data processing techniques in this study are data collection, data reduction, data presentation and drawing conclusions. The results of this study show that students' interest in learning straight line equations assisted by media geogebra software shows positive results with the average response showing a very strong category with a percentage of 69,16%. The Average is obtained from the data for each indicator of student learning interest.]]>
<![CDATA[ANALISIS KESULITAN SISWA SMP DALAM MENYELESAIKAN SOAL PADA MATERI ARITMETIKA SOSIAL ]]>
<![CDATA[Yuni Sapitri]]>;
<![CDATA[Nelly Fitriani]]>;
<![CDATA[Gida Kadarisma]]>
<![CDATA[ JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 3, No 5 (2020): JPMI ]]>
Publisher : <![CDATA[IKIP Siliwangi ]]>
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DOI: 10.22460/jpmi.v3i5.p%p
<![CDATA[This study aims to find out the difficulties of junior high school students in working on descriptive questions on social arithmetic material and to analyze the factors. The subjects of this study were 26 students of class VIII SMP Buana Panca Bakti Cianjur totaling 26 people in the 2019-2020 school year. Data collection in this study was conducted by means of tests, interviews and documentation. Before the interview, a math test was conducted with 5 questions of social arithmetic material. After the tests and interviews are carried out, the results of the tests and interviews are analyzed and taken from the difficulties the students experience when working on social arithmetic questions. The data analysis techniques used in this study were: (1) data reduction, by selecting the main things and focusing the important things, (2) data presentation, presenting the data on student work, (3) drawing conclusions. The results showed that the students' difficulties when solving social arithmetic problems were difficulties in understanding the problems because social arithmetic problems were in the form of story problems, difficulties in mathematical models and difficulties in the process or steps of completion. The factors that cause students' difficulties because students are lazy to read the questions, it is difficult to digest the words and the meaning of the questions, students are less interested in learning mathematics, and students do not understand the arithmetic operation well.]]>
<![CDATA[MENINGKATKAN KEMAMPUAN ADVANCED MATHEMATICAL THINKING DENGAN MENGGUNAKAN MODEL PEMBELAJARAN MATEMATIKA KNISLEY PADA MATA KULIAH TRIGONOMETRI ]]>
<![CDATA[Nelly Fitriani]]>;
<![CDATA[Puji Nurfauziah]]>
<![CDATA[ JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 3, No 1 (2020): JPMI ]]>
Publisher : <![CDATA[IKIP Siliwangi ]]>
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DOI: 10.22460/jpmi.v3i1.p69-80
<![CDATA[This study aims to examine the improvement of Advanced Mathematical Thinking in students whose learning uses the Knisley Mathematical model compared to those using ordinary learning. The research method used is quantitative with Pretest-Postest-Only design, with the instrument used is the Advanced Mathematical Thinking test instrument with 3 categories of questions. Learning is carried out applied to one of the courses at the basic level, Trigonometry. The results obtained from this study are students whose learning using the Knisley mathematical model in Trigonometry courses is better improved than those using ordinary learning, the most prominent results are in the ability of representation and the results that still tend to be low are in the ability of abstraction.]]>
<![CDATA[PENINGKATAN KEMAMPUAN KOMUNIKASI MATEMATIS DAN KETERAMPILAN BELAJAR SISWA SMP DENGAN MENGGUNAKAN PENDEKATAN CONTEXTUAL TEACHING AND LEARNING ]]>
<![CDATA[Laelasari Laelasari]]>;
<![CDATA[Euis Eti Rohaeti]]>;
<![CDATA[Nelly Fitriani]]>
<![CDATA[ JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 1, No 5 (2018): JPMI ]]>
Publisher : <![CDATA[IKIP Siliwangi ]]>
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DOI: 10.22460/jpmi.v1i5.p847-856
<![CDATA[The purpose of this study is to examine how the improve mathematical communication ability of students in learning using contextual approach. The research method used in this study is a quasi-experimental method, with two different classes taken, where the first class gets the learning with the Contextual Approach and the second class using ordinary learning. The population is all students in one of the islamic junior hight schools in Cimahi city with a sample taken two classes. Both classes were given pretest and early questionnaires to determine their initial ability, then the experimental class was given learning with the contextual approach and the control class was given regular learning, and at the end of both classes were given postes that will on though to use help software SPSS 22 and Minitab 16. Analysis using Product Moment Pearson. The results showed a significan students in learning mathematics.]]>
