Abstract
This study aims to: 1) To analyze the increase in mathematical reasoning ability of SMP Negeri 2 Bangkinang Kota students taught by the problem posing learning device developed 2) To analyze the increase in self-efficacy of SMP Negeri 2 Bangkinang Kota students taught by the problem posing learning device developed 3) To analyze the effectiveness of problem posing learning devices developed to improve mathematical reasoning and self-efficacy abilities of SMP Negeri 2 Bangkinang Kota 4) students to analyze the practicality of problem posing learning devices developed to improve mathematical reasoning abilities and self-efficacy of state junior high school students 2 Bangkinang City. The subjects in this study were students of SMP Negeri 2 Bangkinang Kota in class VIII-1 with 27 students and VIII-2 with 29 students. The results showed that: 1. Improvement of students 'mathematical reasoning abilities using the problem posing learning tool on the material of the Two Variable Linear Equation System (SPLDV) was the average achievement of students' mathematical reasoning abilities in the first try of 71.60 increasing to 78.71 in the trials II. 2. Increasing students' self-esteem from trial I to trial II using the problem posing learning device for each student motivation indicator including: (1) experience of success, where in trial I with an average of 27.80 while in the test try II with an average of 27.86, an increase of 0.06; (2) Indicators of other people's experiences, where in trial I with an average of 27.56, while in trial II amounted to 27.98, an increase of 0.42; (3) Indicators of social approach, in trial I with an average of 28.17 and an average in trial II of 28.18, experienced an increase of 0.01; and (4) Indicators of psychological and emotional state in trial I with an average of 26.13 and an average in trial II of 26.32, an increase of 0.19. Keywords : mathematical reasoning abilities, problem posing learning, self-efficacy, mathematics learning tools DOI : 10.7176/JEP/10-33-17 Publication date: November 30 th 2019
Highlights
The development of science and technology in the 21st century is growing rapidly
Data obtained from the results of the posttest of students 'mathematical reasoning abilities in the first and second trials were analyzed to find out the improvement in students' mathematical reasoning abilities by comparing the average scores of students obtained from the posttest results of the mathematical reasoning abilities of the students of I and II
An increase in each indicator of students' mathematical reasoning ability is an increase in the average mathematical reasoning ability of students on the indicator presents a mathematical statement of 5.7, on the indicator of submitting an allegation of 8.7, on the indicator of compiling evidence and giving reasons for a solution of 4, 6, the indicator checks the validity of an argument of 8.3, and the indicator draws a conclusion of 10.5
Summary
The development of science and technology in the 21st century is growing rapidly. In addition to rapid development, changes occur quickly. Indonesia will be left behind by other countries. One of which is the current of globalization which is getting stronger and more open. Education is one of the means and tools so that Indonesia is not left behind from other countries. This is in accordance with Primary, et al (2013: 335) "Education is the upholding pillar of the nation. It is through education that the nation will be able to maintain its dignity ". Education has become a pillar in increasing Indonesia's human resources for nation building
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