Abstract
The purpose of this study was to determine the improvement of students' mathematical communication and disposition abilities taught with discovery learning models. This study us quantitative approach with the type of experimental research and the research design us pretest and posttest design type experiments. The sample was chosen randomly from two classes of 7th grade in one of public junior high school in Sigli, Aceh. The research instrument used was mathematical communication ability test and mathematical disposition questionnaire. The data analysis of students' communication and disposition ability was done by two-way ANAVA test at a significant level of 0.05. The results showed that the improvement of students' mathematical communication and disposition skills taught with discovery learning models was better than those taught with conventional approaches. Furthermore, there was no interaction between discovery learning model and the level of students towards improving communication skills and mathematical dispositions. Therefore, the mathematics teachers can implement discovery learning models in learning to build the next polyhedron. Future researchers should conduct research at other schools in order to improve students' mathematical communication skills in mathematics learning
Highlights
Mathematics is one of the subjects learned at every level of education from elementary, middle and high school to college
Mathematical communication skills tests were conducted twice, namely before the application of the learning model and after the application of the learning model. This is done to see the difference in the improvement of students' mathematical communication skills both in classes that use discovery learning models and classes that use conventional learning
The data analyzed in this study included pretest, posttest, and N-Gain scores of students' mathematical communication skills, which were obtained from class with discovery learning model and class with conventional learning
Summary
Mathematics is one of the subjects learned at every level of education from elementary, middle and high school to college. There are several reasons for the need of students to learn mathematics, among others because mathematics is a means of logical and mathematical thinking, a means of developing creativity, and a means of solving problems in everyday life. It is confirmed by the Ministry of National Education (2013) that one of the graduate competency standards of mathematics subjects for students of basic education units to Zinatun H.D, et al /Journal of Research and Advances in Mathematics Education, 2019, 4(1), 11 - 22 secondary schools. Students have the ability to think logically, analytically, systematically, critically and creatively and the ability to cooperate
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