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adek nila sari harahap
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Mathematics

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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.
Penerapan Collaborative Learning Berbasis Ethnomatika Pola Bagas Godang Tapsel Untuk Meningkatkan Kemampuan Kreativitas Siswa Kelas VII-I Fitria Jelita; Nurdalilah; Adek Nila Sari Harahap; Susi Silastri 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.v5i2.1669

Abstract

The research method used was Classroom Action Research (CAR) conducted in two cycles during the second semester with the topic Quadrilaterals, applying the Collaborative Learning model based on Ethnomathematics of the Bagas Godang Pattern of South Tapanuli. This study aimed to determine: (1) the improvement of students’ creativity, (2) the enhancement of students’ learning activity, and (3) the improvement of teachers’ ability in applying the model. The research subjects were Grade VII-1 students of SMP Negeri 5 Padangsidimpuan in the 2024/2025 academic year. The results showed an increase in students’ creativity from 70% (“Fair” category) in cycle I to 86.67% (“Good” category) in cycle II. Students’ learning activity also improved from 67.42% (“Fair”) to 83.91% (“Good”). Teachers’ performance in implementing the model increased from 3.50 to 3.68 (“Good” category). These findings prove the effectiveness of the model in improving the quality of mathematics learning.
Co-Authors eka suryani Rindani Fitria Jelita Nurdalilah Susi Silastri Lubis