A. Khomeni, S. Prabawanto
This research aims to implement students' active learning through the demonstration method of concrete objects in the line and angle topics in Junior High School. This was a Class Action Research implemented to 40 students at 7th grade of MTsN Batang Toru. The data collection techniques were carried out by observation and distribution of a questionnaire. The data analysis technique used the analysis of Miles and Huberman models with three stages, namely data reduction, data display, and drawing conclusions. This research used three cycles to obtain the desired results. The results of the observation during the learning process showed the observations of the first cycle in the first meeting, student activity was 34.82%, and that in the second meeting was 42.33%. Furthermore, the students' activeness in the second cycle of the first meeting was 51.5%, and that in the second meeting was 63.83%. The third cycle of the first meeting was 74.16%, at the second meeting was 85.16%. A questionnaire indicated that students' activeness during the first, second and third cycles were 44.16%, 64.16% and 84.33%, respectively. It can be concluded that the activeness of students in the line and angle topics in mathematics lessons using the concrete object demonstration method had increased as expected. © Published under licence by IOP Publishing Ltd.
Departemen Pendidikan Matematika, Sekolah Pascasarjana Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung, 40154, Indonesia
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