Article Per Year (5 Year)
p-Index From 2021 - 2026
4.57
P-Index
This Author published in this journals
All Journal Primary: Jurnal Pendidikan Guru Sekolah Dasar AKSIOMA: Jurnal Program Studi Pendidikan Matematika EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA JURNAL EDUCATION AND DEVELOPMENT PeTeKa JURNAL MathEdu (Mathematic Education Journal) Jurnal Pendidikan dan Konseling Edumatika Nasyatuna: Jurnal Pengabdian kepada Masyarakat Jurnal Pengabdian Kepada Masyarakat Radisi Journal Education Innovation Jurnal Cermatika Jurnal Cermatika Jurnal Transformasi Pendidikan Indonesia
Adek Nilasari Harahap
UNIVERSITAS GRAHA NUSANTARA
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Social Sciences Other

Published : 30 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search
Journal : Jurnal Cermatika

 1 
Upaya Meningkatkan Hasil Belajar Dengan Model Pembelajaran Demontrasi Berbantuan Lembarkerja Siswa (LKS) Di Kelas VII SMP Negeri 9 Padangsidimpuan Tahun Ajaran 2021/2022 Makrup Hasbi; Adek Nilasari Harahap; Haritsah Hammamah Harahap
JURNAL CERMATIKA Vol. 3 No. 2 (2023): Jurnal Cermatika Vol 3 No 2 Oktober 2023
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v3i2.1347

Abstract

This research method used is classroom action research using two cycles carried out in the first semester with Set material.The population in this study were VII grade students of SMP Negeri 9 Padangsidempuan as many as 30 people. The class that was used as the sample was class VII-2 of SMP Negeri 9 Padangsidimpuan with 30 students. As the sample is class VII-2 SMP Negeri 9 Padangsidimpuan which will use the demonstration method aided by the set material. will use the demonstration method assisted by student worksheets (lks) in learning. learning. The ability of student learning outcomes in learning mathematics inclass VII-2 SMP Negeri 9 Padangsidempuan on set material increased by 62.4% with the category "sufficient" in cycle I, then increased to 91% with the category "good" in cycle II. with the category "good" in cycle II. Increased student learning activities on set material in the cycle with a percentage result of 75.08% and in cycle II the results increased to 87.27%. For teacher ability in cycle I obtained an average activity score of 3.40 (good) and in cycle IIobtained an average activity score of 3.68 (very good).
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%.
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.
Efektivitas Pembelajaran Matematika Melalui Penerapan Model Learning Cycle Pada Siswa Kelas XI SMA Negeri 1 Sosopan Abdul Rahim Syah; Adek Nilasari Harahap; Susi Sulastri Lubis
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.v5i2.1666

Abstract

This study aims to examine the effectiveness of the Learning Cycle model in mathematics learning for grade XI IPA 2 students at SMA Negeri 1 Sosopan during the first semester of the 2024–2025 academic year, involving 28 students (11 males and 17 females). The research employed a pre-experimental design with The One Group Pretest-Posttest Design and used the Multistage Sampling technique. The instruments included a learning achievement test, student activity observation sheets, and student response questionnaires. The results showed that the average pretest score of 23.75 (very low category) increased to 77.21 (high category) after implementing the Learning Cycle model, with a normalized gain of 0.70. A total of 89.29% of students achieved individual mastery, while student learning activities were categorized as good, and student responses toward learning were positive. Therefore, it can be concluded that the Learning Cycle model is effective in improving students’ mathematics learning outcomes in grade XI IPA 2 at SMA Negeri 1 Sosopan.
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.
Co-Authors Abdul Rahim Syah Agus Makmur Alvi Sahrin Nasution Andi Saputra Mandopa Andi Saputra Mandopa Azwar Ananda Erwina Azizah Hasibuan, Erwina Azizah Fitriani Fitriani Haritsah Hammamah Harahap Indah Purnama Sari Intan Sari Ira Rahmayuni Jusar Ishak Harahap Jainal Abidin Mahrani Makrup Hasbi Makrup Hasbi Mansukri Mona Chairani Nova Christina Dewi Nurdalilah Nurdalilah Nurdalilah Nurdalilah Nurdalilah Nurdalilah Nurdalilah Nurdalilah Nurdalillah Nurhizrah Gistituati Puspa Riani Nasution Ramadhan Saleh Sikumbang Rizki Mahriady Rumondang Bulan Harahap Rusdinal Rusdinal Rusdinal Sapriani Lubis Siti Meutia Sari Siti Meutia Sari Susi Sulastri Susi Sulastri Lubis Tinur Rahmawati Tinur Rahmawati Harahap Tri Fousa Pasaribu Trio Kharisma Yulfia Nora yulia rizka lubis yuni fitri febriani yuni fitri febriani Yuni Rhamayanti Yusminah