Practicality of Learning Tools Based on Contextual Teaching and Learning Approach to Improve Mathematical Communication Skills for High School Students Grade VII

Abstract

This study aims to develop mathematics learning tools based on contextual teaching and learning approaches in the form of lesson plan and student worksheets for high school students grade VII. This research is a development research. Model used is Plomp model which consists of three stages, namely the initial investigation phase, the prototype development stage, and the assessment stage. This research is limited to the prototype development stage to see the practicality of learning devices that has been designed. Based on the test results of the practicality of learning tools through three assessment data, namely, the observation sheet data of the implementation of learning with an average of 89.38%-the category is very practical, the teacher questionnaire data with an average of 88%-the category is very practical, and the questionnaire data of students' responses with an average of 86.93%-the category is very practical. The results shows that the mathematics learning tool based on contextual teaching and learning approach is valid and practical.