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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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Pengaruh Metode Kooperatif Learning Tipe Snowball Throwing Terhadap Kemampuan Komunikasi Matematika Siswa SMP Negeri 5 Padangsidimpuan Wulan Eka Putri Siregar; Susi Sulastri Lubis; Nova Christina Dewi
JURNAL CERMATIKA Vol. 4 No. 2 (2024): Jurnal Cermatika Vol 4 No 2 Oktober 2024
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v4i2.1498

Abstract

This study aims to see whether or not there is an effect of snowball throwing type cooperative learning method on mathematical communication skills of seventh grade students of SMP Negeri 5 Padangsidimpuan. This type of research is a pseudo experiment. The research samples were VII-5 and VII-8 classes totaling 40 students. The data collection technique used is an essay-shaped test of 5 questions that have been tested with pretest and posttest reliability using the Cronbach's alpha formula in the spss application with a significant level of 5% and n = 20 which is then compared to the r table obtained a value of 0.444. It turns out that rcount> rtabel is (0.608>0.444) for the pretest and (0.556>0.444) for the posttest. Data analysis using normality test, homogeneity test and hypothesis testing. The pretest results of the average value of the experimental and control classes were 63.8 and 64.05, respectively. For the posttest results, the average value of the experimental class was 82.75 and the control class was 75.65. The normality test of the pretest and posttest of the experimental and control classes has sig>0.05 and the homogeneity test of the significant value is above 0.05 or sig>0.05, so the experimental class and control class have homogeneous data conditions. For the hypothesis test, a significant value of 0.039 or 0.039 <0.05 was obtained. Thus the researcher concluded that there was an effect of the snowball throwing type cooperative learning method on the mathematical communication skills of SMP Negeri 5 Padangsidimpuan.
Analisis Kemampuan Pemahaman Konsep Matematika Kelas VII SMP Negeri 7 Padangsidimpuan Melalui Pemanfaatan Media Audio Visual Pada Materi Bilangan Bulat Nurhaida; Puspa Riani Nasution; Haritsah Hammamah Harahap
JURNAL CERMATIKA Vol. 4 No. 2 (2024): Jurnal Cermatika Vol 4 No 2 Oktober 2024
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v4i2.1499

Abstract

This study aims to determine students' conceptual understanding after using audio-visual media on the topic of integer operations, using five indicators of mathematical conceptual understanding in Class VII 3 at SMP N 7 Padangsidimpuan. This research is qualitative in nature. The data in this study were obtained from direct observations, interviews with teachers, and interviews with students. After the data were collected, they were analyzed using three stages: data reduction, data presentation, and verification or conclusion drawing. Data validity was checked using data source triangulation. The subjects of this study were two Class VII teachers and 26 students from Class VII 3. The results of this study show that after learning using audio-visual media, some students experienced an improvement in their conceptual understanding. This improvement was observed across all indicators of conceptual understanding. Most students demonstrated a good understanding of integer operations, although a small number of students still struggled with this concept.
Upaya meningkatkan minat belajar siswa dengan menggunakan pendekatan project Based learning pada siswa kelas VIII SMP Negeri 6 Padangsidimpuan yuni fitri febriani; Adek Nilasari Harahap; Andi Saputra Mandopa
JURNAL CERMATIKA Vol. 4 No. 2 (2024): Jurnal Cermatika Vol 4 No 2 Oktober 2024
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v4i2.1549

Abstract

The research method used is classroom action research utilizing two cycles conducted in the second semester with the material of Geometry and Spatial Structures using the Project-Based Learning approach. The sample in this study is students in class VIII^1 at SMP Negeri 6 Padangsidimpuan, totaling 32 students. The results of the study indicate that the interest in learning Mathematics through the Project-Based Learning method among grade VIII^1 students at SMP Negeri 6 Padangsidimpuan in the 2023/2024 academic year increased. This can be seen from the increase in the average initial test score of 57.34%. The students’ learning interest test scores in cycle I meeting I were 66.6 and in meeting II were 80 with an average score of 73.3%. In cycle II meeting III, the students’ learning interest test scores were 86.6 and in meeting IV were 100 with an average score of 93.3%. Meanwhile, the results of the teacher’s observations in cycle I meeting I were 66.6 and in meeting II were 79.1 with an average score of 72.85. In cycle II meeting II, the teacher’s observation results were 83.33 and in cycle IV were 95.83 with an average score of 89.55%.
Analisis Kesulitan Siswa Dalam Menyelesaikan Soal Pada Materi Barisan dan Deret Aritmatika dengan Menggunakan Model Pembelajaranm Make A MATCH Khoirunnisa; Nova Christina Dewi; Puspa Riani Nasution
JURNAL CERMATIKA Vol. 5 No. 1 (2025): Jurnal Cermatika Vol 5 No 1 April 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i1.1584

Abstract

This research aims to determine: (1) students' difficulties in understanding the concept of arithmetic sequences and series, (2) students' difficulties in applying the principles of arithmetic sequences and series in solving problems, and (3) students' difficulties in finding information contained in sequences and arithmetic series questions. arithmetic series using the Make a Match learning model in class XI IPS 1 SMA NEGRI 8 Padangsidimpuan. The research carried out was qualitative research using qualitative descriptive methods. The subjects in this research were students of class XI IPS 1 SMA NEGRI 8 PADANGSIDIMPUAN. Data collection techniques by means of interviews with tests.The results of the research showed that the 4 students who were interviewed and completed the test questions found that the four students had different difficulties in solving sequence and series story questions. In understanding concepts, students who have difficulty will find it difficult to understand the concept of arithmetic sequences and series and will not be able to apply it to story problems for arithmetic sequences and series. When finding the information contained in the problem, students who experience difficulty will find it difficult to find the information and convert the mathematical information into the form of a mathematical model so they will experience difficulty in determining principles or formulas if the information contained in the story is not known beforehand.
Penerapan Metode Drill Untuk Meningkatkan Kemampuan Berpikir Kritis Siswa Kelas VIII Materi Peluang Rumondang Bulan Harahap; Adek Nilasari Harahap; Haritsah Hammamah Harahap
JURNAL CERMATIKA Vol. 5 No. 1 (2025): Jurnal Cermatika Vol 5 No 1 April 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i1.1585

Abstract

This class action research aims to determine the effectiveness of the application of the drill method in improving the critical thinking skills of grade VIII students in learning mathematics of chance material. The results showed a significant increase in students' critical thinking skills after the systematic and gradual application of the drill method. The average pre-test score in Cycle I increased from 52.00 to 71.33 with an N-Gain of 0.40 (medium category), and in Cycle II it increased further to 84.67 with an N-Gain of 0.47 (medium category). In addition, the percentage of student learning completeness increased from 53.33% in Cycle I to 86.67% in Cycle II. This improvement was also supported by students' increased active participation, seen from their courage to answer questions, ask questions, and discuss in small groups. Direct feedback from the teacher after practicing the problems also played a role in improving students' thinking processes and supporting the development of metacognition. The drill method proved effective in overcoming students' difficulties in summarizing opportunities, comparing probabilities, and constructing logical arguments based on mathematical data. Although the improvement in critical thinking skills is still moderate, this study shows that the drill method has great potential to be developed in learning mathematics, especially materials that require analysis and reasoning.
Pengaruh Gamifikasi Pembelajaran Matematika Terhadap Hasil Belajar Peserta Didik Kelas VII SMP Negeri 5 Padangsidimpuan Mona Chairani; Adek Nilasari Harahap; Nurdalilah
JURNAL CERMATIKA Vol. 5 No. 1 (2025): Jurnal Cermatika Vol 5 No 1 April 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i1.1586

Abstract

This study aims to determine the effect of gamification in mathematics learning on the academic achievement of seventh-grade students at SMP Negeri 5 Padangsidimpuan. The research employed a quasi-experimental method with a non-equivalent control group design. The sample consisted of two classes: an experimental group that received gamified instruction and a control group that was taught using conventional methods. Data were collected through learning outcome tests, and the analysis was conducted using parametric statistics, specifically the independent samples t-test. The analysis revealed that the average learning outcome in the experimental group was 83.6, which was higher than that of the control group, which had an average score of 76.2. The prerequisite tests indicated that the data were normally distributed and homogeneous. The t-test produced a significance value of p = 0.003 < 0.05, indicating a statistically significant difference between the two groups. The conclusion of this study is that gamified learning has a positive impact on students' mathematics achievement. Gamification enhances student engagement, motivation, and conceptual understanding. Therefore, this strategy is recommended as an innovative approach to mathematics instruction at the junior high school level.
Penerapan Model Pembelajaran Talking Stick Untuk Meningkatkan Keaktifan Belajar Matematika Siswa Pada Materi Himpunan di Kelas VII Mhd. Syukri Harisandi; Nova Christina Dewi; Susi Sulastri Lubis
JURNAL CERMATIKA Vol. 5 No. 1 (2025): Jurnal Cermatika Vol 5 No 1 April 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i1.1619

Abstract

This study aims to determine whether there is a significant effect of using the Talking Stick learning model on students' mathematics learning outcomes on set material at SMP Negeri 4 Padangsidimpuan, Padangsidimpuan City on set subject matter. This study used a Non-Equivalent Group Design with one type of treatment where in this study only the experimental class was given treatment while the control class was not given treatment. The samples in this study were two classes taken from the population using the Total Sampling technique. Total Sampling (Saturated Sampling). The samples in this study were students in grades VII-8 and VII-9 of SMP Negeri 4 Padangsidimpuan Padangsidimpuan City in the 2023-2024 school year. the data collection instrument used was a test. The results of research using the Talking Stick learning model on set material in class VII SMP Negeri 4 Padangsidimpuan Padangsidimpuan City. It is known that t-count> t-table (2.194> 2.002) means Ha is accepted and H0 is rejected. So it can be concluded that: There is a Significant Effect on the Use of the Talking Stick Learning Model on Student Mathematics Learning Outcomes in Class VII of SMP Negeri 4 Padangsidimpuan, Padangsidimpuan City.
Penerapan Model Pembelajaran Conceptual Understanding Procedures Dapat Meningkatkan Hasil Belajar Matematika Siswa di Kelas IX SMP fatimah Sari; Susi Sulastri Lubis; Andi Saputra Mandopa
JURNAL CERMATIKA Vol. 5 No. 1 (2025): Jurnal Cermatika Vol 5 No 1 April 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i1.1620

Abstract

This research was carried out at SMP Negeri 3 Angkola Timur. The subjects in this research were students in class IX-2 of SMP Negeri 3 East Angkola for the 2023-2024 academic year, totaling 20 students. The object of this research is the application of the Conceptual Understanding Procedures learning model to the sub-subject of cubes and blocks. From the results of the first cycle of observations, it is known that at the first meeting the observation results were 65.5 and the observation results at the second meeting were 75 with an average of 71.25%. Meanwhile, the results of the second cycle of observations showed that at the third meeting the observation results were 80 and the observation results at the fourth meeting were 87.5 with an average of 77.5%. The results of the initial test obtained an average score of 55% with 25% or 5 students completing their studies, while 75% or 15 students did not complete their studies. After taking action in cycle I in class IX-2, carrying out the first learning outcomes test, the average score in cycle I was 65.25, 13 students or 65% completed their studies, while 7 students or 35% did not complete their studies. In cycle II in class IX-2, the implementation of the first cycle learning outcomes test obtained an average score of 74.5, 17 students who completed their studies or 85%, while those who did not complete their studies were 3 people or 15%. By implementing the Conceptual Understanding Procedures learning model, students' mathematics learning outcomes can be improved.
Upaya Meningkatkan Hasil Belajar Siswa Pada Materi Himpunan Dengan Model Pembelajaran Reciprocal Teaching eka suryani Rindani; adek nila sari harahap; Nurdalilah
JURNAL CERMATIKA Vol. 3 No. 1 (2023): Jurnal Cermatika Vol 3 No 1 April 2023
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v4i1.1643

Abstract

This research is classroom action research (PTK). The learning tools used in this research are the Learning Implementation Plan (RPP), Student Activity Sheet (LAS), test instruments, student activity observation sheets and teacher ability observation sheets to manage learning. The results of the research showed that by applying the Reciprocal Teaching learning model in cycle I, the percentage of completeness in the minimum "sufficient" category was 73.08% and in cycle II it was 84.62%. There was an increase from cycle I to cycle II of 11.54%. With achievement indicators ≥ 80% have been achieved. Then, for the results of observations of student activities in cycle I, it was found that the level of student activity was 71.05% "fair" in cycle II 80.69% "good". The increase that occurred from cycle I to cycle II was 9.64%, the achievement indicator was ≥ 80%. Meanwhile, the results of observations of the teacher's ability to manage learning in cycle I and cycle II were obtained in the "good" category.
Pengaruh Metode Inquiry Terhadap Kemampuan Koneksi Matematika Kelas X SMK Swasta Teruna Padangsidimpuan andika saputra harahap; Yuni Rhamayanti; Puspa Riani Nasution
JURNAL CERMATIKA Vol. 5 No. 2 (2025): Jurnal Cermatika Vol 5 No 2 Oktober 2025
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v5i2.1664

Abstract

This study aims to determine the effect of the inquiry method on students' mathematical connection ability in Class X of SMK Swasta Teruna Padangsidimpuan. Mathematical connection ability is an essential competency in mathematics learning that includes students’ ability to connect mathematical concepts, relate mathematics to real-life situations, and apply various mathematical representations. This research is a quasi-experimental study using a Non-Equivalent Control Group Design. The sample consisted of two classes: the experimental class, which received treatment using the inquiry method, and the control class, which was taught using conventional methods, with 20 students in each class. The instrument used in this study was a mathematical connection ability test in the form of essay questions that had been validated.The results showed that the average post-test score in the experimental class was 77.05, while in the control class it was 53.90. The independent sample t-test resulted in a significance value of 0.000 < 0.05, indicating a significant difference between the two groups. Therefore, it can be concluded that the inquiry learning method significantly affects the improvement of students’ mathematical connection ability.

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