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Pardomuan N.J.M. Sinambela
Universitas Negeri Medan
Education

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Penerapan Model Pembelajaran Contextual Teaching and Learning (CTL) Berbantuan Media Audiovisual untuk Meningkatkan Kemampuan Pemahaman Konsep Matematika Siswa di SMP Swasta R.A Kartini Tebing Tinggi Cronika Desranti Panjaitan; Pardomuan N.J.M. Sinambela
Journal on Education Vol 5 No 2 (2023): Journal on Education: Volume 5 Nomor 2 Tahun 2023
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v5i2.1212

Abstract

The low ability to understand mathematical concepts of students in class VIII of Private Middle School R.A Kartini Tebing Tinggi is the background to this research problem. The purpose of this research is to improve students' understanding of mathematical concepts by applying the Contextual Teaching and Learning model assisted by audiovisual media. This type of research is classroom action research (PTK) which consists of 2 cycles. The place of this research is at RA Kartin Tebing Tinggi Private Middle School for the academic year 2022/2023. The subjects in this study were class VIII students, totaling 30 people. Methods of data collection using tests, questionnaires and observation sheets. The results obtained from the research show that there is an increase in the ability to understand concepts after using the Contextual Teaching and Learning model assisted by audiovisual media. The increase in conceptual understanding ability was seen from the average student score of 37.08 with a classical percentage of 3.3% before the action was given. After being given action in cycle I it increased to 67.5 with a classical percentage of 56.6% then increased again in cycle II to 81.67 with a classical percentage of 86.7%. From the results of the study it can be concluded that the application of the contextual teaching and learning model assisted by audiovisual media can improve the ability to understand the concepts of class VIII students of Private Middle School R.A Kartini Tebing Tinggi.
Penerapan Model Pembelajaran Berbasis Masalah Berbantuan GeoGebra untuk Meningkatkan Kemampuan Komunikasi Matematis Siswa SMP Negeri 1 Kolang Winny Thesa Sianturi; Pardomuan N.J.M. Sinambela
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.2480

Abstract

The research aims to improve the mathematical communication skills of SMP Negeri 1 Kolang students by applying a problem based learning model assisted by GeoGebra. The research subjects were 30 grade VIII students of SMP Negeri 1 Kolang. The type of research used was classroom action research which was carried out in 2 actions. The two actions were carried out in 4 meetings in learning and 2 evaluations. The results of the study show that mathematical communication skills can improve after using the GeoGebra assisted problem based learning model. The increase was obtained through an average students score of 42.7 with 7% classical mastery to 67.5 with 50% classical mastery in action I and to 83.05 with 87% classical mastery in action II. An increase was also obtained through teacher observation of 2.56 in action I to 3.30 in action II. So it was concluded that the application of the problem based learning model assisted by GeoGebra can improve the mathematical communication skills of students of SMP Negeri 1 Kolang.
Co-Authors Cronika Desranti Panjaitan Winny Thesa Sianturi