Development of Learning Devices Based on Contextual Teaching and Learning Models to Improve Mathematical Communication Skills for Junior High School Students Nur Aini Irma, Mulyono, E. Elvis Napitupulu
Universitas Negeri Medan
Abstract
This study aims to: (1) analyze how the validity, practicality and effectiveness of mathematics learning tools developed using contextual-based learning- (2) analyzing the improvement of students^ mathematical communication skills using contextual-based learning tools after they were developed. The research subjects are 7th grade students of SMP Negeri 1 Medan in the 2021/2022 academic year. While the object in this study is a learning device using the Contextual Teaching and Learning (CTL) model. The results showed that: (1) The learning tools based on the contextual teaching and learning model that were developed were declared valid, practical and effective- (2) there was an increase in mathematical communication skills seen from the N-Gain score in the first trial with a score of 0.43 and in the second trial the value with a score of 0.61.
Keywords: Development of Learning Devices, Mathematical Communication, Contextual Approach (Contextual Teaching and Learning)
