Development of STEM-nuanced textbook to improve students' mathematical communication skill

Abstract

This research is development research that aims to develop and to know the quality of Science, Technology, Engineering, and Mathematics (STEM)-nuanced teaching materials that were meet the suitability of characteristics, validity, readability, and improvement of students' mathematical communication ability. This research uses the stages of Research & Development, including potential and problems; data collection; product design; product test (readability test); trial test; and final product. The results showed that the teaching material met the suitability of the characteristics. The results of the validity test showed a percentage of 88.54%. The readability test results showed a percentage of 63.65%. Analysis of pretest and posttest showed that teaching materials increased mathematical communication ability with the n-gain score of 0.44 in the medium category. Thus, the development of Science, Technology, Engineering, and Mathematics (STEM) nuanced teaching materials is qualified because suitability in characteristics, valid to use, easily understand, and can increase students' mathematical communication ability.