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INDONESIA
Jurnal Cermatika
Published by Universitas Graha Nusantara
ISSN : 25025139     EISSN : 27766039     DOI : https://doi.org/10.64168/cermatika.v4i1
Core Subject : Education,
Mathematics
JURNAL CERMATIKA Jurnal Cermatika adalah jurnal ilmiah dengan Nomor ISSN 2502-5139 (Media Cetak) dan ISSN 2776-6039 (Media Online) yang mempublikasikan artikel hasil penelitian, kajian pustaka, maupun pengembangan dalam bidang matematika dan pendidikan matematika. Jurnal ini terbit secara berkala dua kali dalam setahun, yaitu pada bulan April dan Oktober.
Arjuna Subject : Matematika - Aljabar dan Teori Bilangan
Articles 55 Documents
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2. PENERAPAN MODEL PEMBELAJARAAN INKUIRI TERBIMBING UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA DI SMK NEGERI 1 KABUPATEN PADANG LAWAS Nenni Herawati Siregar; Yuni Rhamayanti; Nova Christina Dewi
JURNAL CERMATIKA Vol. 2 No. 1 (2022): Jurnal Cermatika Vol 2 No 1 April 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i1.1032

Abstract

From the results of the validity of the first cycle student problem solving test instrument above, it was found that all items had a minimum validation correlation of moderate category, so that all items could be used for evaluation in this study. the results of the difficulty level of the problem-solving ability test instrument above, it was found that the percentage interval of the difficulty level of the questions was at 27%-73%, with the minimum item category being moderate. All questions are not too difficult and not too easy, so they can be used for evaluation in this study. The implementation stages of this classroom action research include: Action planning, In this stage a plan will be made in the form of activities that will be carried out by the teacher in planning classroom action research on the application of problem-based learning strategies, Implementation of actions, In this stage, the teacher conveys the competencies to be achieved during the learning process, Observation, In this stage, observations are made of student and teacher activities in the learning process, Reflection. At this stage, classroom action research will continue if the level of problem-solving ability of students in the circle material mathematics lesson is marked by student learning mastery that has not reached 80% in the good category
ANALISIS KESULITAN BELAJAR SISWA DALAM MEMAHAMI KONSEP BANGUN DATAR DI KELAS V SD NEGERI 100612 SORIK TAHUN AJARAN 2021-2022 Yuni Rhamayanti; Riski Handayani; Ramadhan Saleh
JURNAL CERMATIKA Vol. 2 No. 1 (2022): Jurnal Cermatika Vol 2 No 1 April 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i1.1034

Abstract

In this study, the problem raised is the difficulty of students in learning mathematics, generally resulting from several problems that arise in the learning process, there are still many students who have difficulty understanding the concept of flat shapes even though in previous classes they have studied the material but the data obtained show there are still many students who have learning difficulties below the average. This study aims to find out where students have difficulty learning the Bangun Datar material, what factors influence students' mathematics learning difficulties in the Bangun Datar material and what are the teacher's efforts in overcoming students' mathematics learning difficulties at SD Negeri 100612 Sorik. This research is a qualitative research that uses descriptive methods to collect data by using tests and interviews. which was held at SD Negeri 100612 Sorik, from February 30 to March 25, 2022. The data sources in this study were students and mathematics teachers for grade 5 at SD Negeri 100612 Sorik.
PENGARUH PENGUASAAN KONSEP TEOREMA LIMIT TERHADAP KEMAMPUAN MENYELESAIKAN SOAL-SOAL BARISAN DAN DERET PADA MAHASISWA Haritsah Hammamah Herahap; Yuni Rhamayanti; Yeni Cholida
JURNAL CERMATIKA Vol. 2 No. 1 (2022): Jurnal Cermatika Vol 2 No 1 April 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i1.1035

Abstract

The background of this research is that the ability of students of the Mathematics Department of UGN Padangsidimpuan in solving problems in the Complex Analysis course, especially on the material of Rows and Complex Series, has not been satisfactory. This is because students are less able to master the concept of the Limit Theorem. Mastery of the concept of the Limit Theorem is one of the factors that affect students' ability to solve complex Rows and Series problems so that they can obtain satisfactory results. This type of research uses quantitative methods with an ex fost facto approach. The population of this study were 102 students of the Mathematics Department of UGN Padangsidimpuan, while the sample was 38 students. Sampling was done by simple random sampling technique. The instrument used as data collection is a test. The analyzed data were obtained in two stages. The first stage is descriptive statistical analysis stage and the second stage is inferential statistical analysis. Based on this, this study aims to determine the significant influence between mastery of the concept of the Limit Theorem on the ability to solve problems of sequences and series in students. The results obtained in this study indicate that there is a significant effect between the X variable and the Y variable. This is evidenced by the calculation of the T test, with the results Tcount > T table or 55.84 > 4.11.
Penerapan Model Pembelajaran Inkuiri Terbimbing Untuk Meningkatkan Kemampuan Pemecahan Masalah Siswa Yuni Rhamayanti; harahap, mukmin; Lynni Suryani; Sri Rezeki Pakpahan
JURNAL CERMATIKA Vol. 2 No. 1 (2022): Jurnal Cermatika Vol 2 No 1 April 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i1.1039

Abstract

This research is a classroom action research (classroom action research) conducted collaboratively between researchers and mathematics teachers in class VII-2 SMP Negeri 3 Padangsidimpuan for the academic year 2021-2022. The subjects of this study were all seventh grade students. Techniques in collecting data in this study were tests, observation interviews and questionnaires. From the results of the validity of the first cycle student problem solving test instrument above, it was found that all items had a minimum validation correlation of moderate category, so that all items could be used for evaluation in this study. the results of the difficulty level of the problem-solving ability test instrument above, it was found that the percentage interval of the difficulty level of the questions was at 27%-73%, with the minimum item category being moderate. All questions are not too difficult and not too easy, so they can be used for evaluation in this study. The implementation stages of this classroom action research include: Action planning, In this stage a plan will be made in the form of activities that will be carried out by the teacher in planning classroom action research on the application of problem-based learning strategies, Implementation of actions, In this stage, the teacher conveys the competencies to be achieved during the learning process, Observation, In this stage, observations are made of student and teacher activities in the learning process, Reflection. At this stage, classroom action research will continue if the level of problemsolving ability of students in the circle material mathematics lesson is marked by student learning mastery that has not reached 80% in the good category, then improvements are made in the next cycle. This research is planned for two cycles, if in two cycles the teacher feels that the performance indicators that have been formulated previously, then something has not been resolved, then proceed to the next cycle with the stages as has been done in the second cycle of course with improvements. The first and second cycles consisted of 3 meetings. Student activity increases with the use of the guided inquiry learning model. This can be seen from the results of the observation of student activities in the first cycle, 79.58% are still in the "enough" category. Furthermore, in the second cycle there was an increase to the "good" category with a percentage of 88.33%. Based on cycle I and cycle II there was an increase in student activity of 8.75%. Teacher performance in managing learning increases with the use of problem-based learning models. This is supported by achieving the category of "Good enough" and cycle II obtained an increase by obtaining the category of "Good". Based on cycle I and cycle II there is an increase in teacher performance
PENERAPAN MODEL PEMBELAJARAN INKUIRI TERBIMBING UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH PADA MATERI SISTEM PERSAMAAN LINEAR DUA VARIABEL DI KELAS X SMK NEGERI 1 SIBUHUAN Melida Warni Nasution; Yuni Rhamayanti; Nova Christina Dewi
JURNAL CERMATIKA Vol. 2 No. 1 (2022): Jurnal Cermatika Vol 2 No 1 April 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i1.1040

Abstract

This study uses problem solving methods in the experimental class A and the cooperative method with the type of Guided Inquiry in the experimental class B. In research that uses problem solving learning, students' mathematical problem solving abilities in experimental class A will be seen. Data on students' mathematical problem solving abilities are obtained by providing description test as many as 5 questions on the pretest and posttest. From previous research data, the researcher obtained tcount = 1.950 and ttable = 1.670. This indicates that the learning outcomes taught using problem solving methods are different from problem solving abilities using the cooperative method of Guided Inquiry. Meanwhile, in the cooperative model of the type of Guided Inquiry, the class became a little noisier and slower because of the change in groups from the initial group to the expert group and from the expert group back to the initial group again. The results of these calculations indicate that the problem solving method and the cooperative method of the type of Guided Inquiry have differences in students' mathematical problem solving abilities. The test results on the problem-solving method and the cooperative method of the Guided Inquiry type showed that students had the ability to state what was contained in the problem into a mathematical model and students could express the correct reasons for the questions given.
PENERAPAN MODEL PEMBELAJARAN DISCOVERY LEARNING UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA KELAS VII DI SMP NEGERI 4 MUARA BATANG GADIS Habibah; Yuni Rhamayanti; Puspa Riani Nasution
JURNAL CERMATIKA Vol. 2 No. 2 (2022): Jurnal Cermatika Vol 2 No 2 Oktober 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i2.1041

Abstract

This study aims: (1) To find out the improvement of students' mathematical problem solving by applying the Discovery Learning learning model to the subject of social arithmetic in class VII SMP Negeri 4 Muara Batang Gadis in the 2021/2022 academic year, (2) To determine the level of achievement of problem solving abilities. students' mathematics by applying the Discovery Learning learning model to the subject of social arithmetic in class VII SMP Negeri 4 Muara Batang Gadis for the 2021/2022 academic year, (3) To find out the management of learning carried out by the teacher by applying the Discovery Learning learning model based on problem solving on the subject of arithmetic Social studies in class VII SMP Negeri 4 Muara Batang Gadis teaching 2021/2022 This type of research is classroom action research. The level of problem solving ability in the first cycle is moderate with a class average score of 70.083 with 26 students (72.22%) Implementation of actions in cycle II, high The problem solving ability of students is high with a class average score of 80.47 with 35 students or 80.083% of all students. Thus it can be said that the class has been completed in learning, there are 80% of students who have a moderate level of problem solving ability.
KORELASI MOTIVASI BELAJAR TERHADAP HASIL BELAJAR SISWA SELAMA DARING Oktina Khoirunnisa; Mona Chairani; Joice Ronitua Simamora
JURNAL CERMATIKA Vol. 2 No. 2 (2022): Jurnal Cermatika Vol 2 No 2 Oktober 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i2.1043

Abstract

Indonesia experienced the Covid-19 pandemic, precisely at the beginning of 2020. This pandemic had an impact on various sectors, one of which was the education sector. Students and college students still have to follow the policies of the government to implement Distance Learning (PJJ). Although it has been supported by various technologies during the PJJ, there are still gaps that cause learning to be less effective. One of the things that is feared is that if the PJJ lasts for a long time, it will result in learning loss or reduced motivation, knowledge and skills academically. Online learning is learning that uses the internet network supported by learning applications.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBER HEAD TOGETHER (NHT) UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA KELAS VIII-1 SMP NEGERI 4 MUARA BATANG GADIS TP. 2021/2022 Wilda Harianti; Yuni Rhamayanti; Puspa Riani Nasution
JURNAL CERMATIKA Vol. 2 No. 2 (2022): Jurnal Cermatika Vol 2 No 2 Oktober 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i2.1044

Abstract

This The low ability of students' mathematical problem solving affects the success of a learning process. Learning model as a tool to achieve a goal. The better a learning model, the better the achievement. So one of the most important teacher tasks, before carrying out their duties is to know and apply the learning model, the model used in this study is the Number Head Together (NHT) cooperative learning model.This research is a classroom action research (CAR) by taking the research subjects of Class VIII-1 students of SMP Negeri 4 Muara Batang Gadis for the academic year 2021-2022. consisting of 22 students. The objects taken in the research are students' problem solving abilities, student learning activities in the implementation of classroom learning, teacher activities that specialize in the Number Head Together (NHT) type cooperative learning model to improve students' mathematical problem solving on the subject of Two Variable Linear Equation Systems ( SPLDV). The results of this study show that the problem-solving ability of students using the Number Head Together (NHT) type of cooperative learning model for Class VIII-1 students of SMP Negeri 4 Muara Batang Gadis in the 2021-2022 academic year has increased, it can be seen from the students' mathematical problem solving ability in the first cycle of 45 ,45% who completed the second cycle and 81.82% of students who completed the 22 students who took the study test. Based on the research data through the student observers, the percentage was 68.75% in the first cycle and 90% in the second cycle. Based on the research data through teacher observers, the percentage was 3.45 in the first cycle and 3.94 in the second cycle. So, it can be concluded that each cycle has increased and is included in the "very good" category and has met the research achievement criteria, so this research stops in cycle II.Based on these results, the application of the Number Head Together (NHT) learning model can improve students' mathematical problem solving skills on the subject of a two-variable linear equation system in class VIII-1 of SMP Negeri 4 Muara Batang Gadis in the 2021-2022 academic year.
PENGARUH MODEL ACTIVE LEARNING QUIZ TEAM Yuni Rhamayanti; Nandini Faradilla; Wulan Eka Putri; Sri Rejeki Pakpahan; Marozi Hardiansyah
JURNAL CERMATIKA Vol. 2 No. 2 (2022): Jurnal Cermatika Vol 2 No 2 Oktober 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i2.1045

Abstract

The active learning quiz team model is one type of active learning that serves to liven up the atmosphere, increase their sense of responsibility for what they learn. The reason for using the active learning quiz team model is because this strategy is considered to make learning fun and students can actively participate in the learning process. At SMPN 2 Batangtoru Kab. South Tapanuli teachers have not used models, media or methods so that students' interest and activity have not been maximized. This study aims to explain: (1) how the effect of using the active learning quiz team model on the learning interest of class VIII students of SMPN 2 Batangtoru, Kab. South Tapanuli (2) how is the effect of using the quiz team model on the learning interest of class VIII students of SMPN 2 Batangtoru Kab. South Tapanuli and (3) how is the description of the activeness of class VIII students of SMPN 2 Batangtoru Kab. South Tapanuli. This type of research is quantitative research. The research design used is experimental research. In this study the population was all fourth grade students at SMPN 2 Batangtoru Kab. South Tapanuli with a total of 46 students with 23 students for the experimental class and 23 students as the control class.Sampling techniques and population samples. The data collection instruments used tests and questionnaires. The data analysis technique in this study used the T-test. Based on the calculated data, it showed that the average student interest in learning had a t-count value of 2.831 while t-table was 1.684, 0.05 and the average learning outcomes students have a t count value of 6.258 while t table 1.697, 0.05 the above variable shows t count > t table, meaning that Ho is rejected and Ha is accepted, so there is an effect of the quiz team strategy on interest in learning in mathematics learning for class VIII students
PENGARUH BLENDED LEARNING TERHADAP MOTIVASI BELAJAR MATEMATIKA PADA SISWA DI KELAS XI SMK NEGERI 1 ANGKOLA TIMUR TAHUN AJARAN 2021/2022 Indah Purnama Sari; Nova Christina Dewi; Adek Nilasari Harahap
JURNAL CERMATIKA Vol. 2 No. 2 (2022): Jurnal Cermatika Vol 2 No 2 Oktober 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i2.1046

Abstract

This study aims to determine whether there is an effect of Blended Learning on the motivation to learn mathematics in class XII TBSM SMK Negeri 1 Angkola Timur. This type of research is an experiment by giving treatment to the research sample group and then given a post-test, as a data collection tool the instrument is a student's mathematics learning motivation questionnaire. The sample in this study consisted of 2 classes of 30 students in class XI TBSM-1 as the experimental class and class XI TBSM-2 as the control class. The results of the questionnaire on students' motivation to learn mathematics obtained an average score of students on the subject of relations and functions of 83.53 and a standard deviation of 10.644 in the experimental class or those given treatment. While in the control class obtained an average value of 76.93 with a standard deviation of 8.925. And after the t-test was carried out on the post-test data of the experimental and control classes, which was used to see whether there was an effect of Blended Learning on the motivation to learn mathematics in class XI TBSM students of SMK Negeri 1 Angkola Timur, it was found that the t-count = 2.602 and t- table = 2.042 for the significance level = 0.05. This shows that the value of t-count > t-table is 2.602 > 2.042 then Ho is rejected and Ha is accepted.

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