Pengaruh Pemberian Soal Matematika Jenis Open-Ended Problems Terhadap Kemampuan Siswa Memecahkan Masalah Program Linier

Abstract

[Title: The Effect of Open-Ended Problems on Mathematics Problem toward Students' Ability in Solving Linear Program Problems]. Assessing students' abilities in solving linear program problems with simple mathematical problems cannot provide authentic assessments, so it is necessary to use mathematical problems with open-ended problems. The purpose of this study is to determine the effect of giving open-ended problems to the students' ability to solve linear program problems. This research is an experiment with a sample group of 28 students of 11th grades IPA-2 of SMA Negeri 7 Mataram. Data was collected through tests and interviews statistically analyzed both descriptively and inferentially. The mathematical tests used in this study have been tested for validity and reliability. Validity test based on expert judgment and reliability testing using product-moment correlation. Pre-test and post-test data have been tested that both are normally distributed and homogeneous. Homogeneity test uses F-test statistics and normality test uses the interpretation of skewness and kurtosis. The influence test is performed using the one-tailed statistical t-test. Student problem-solving performance was assessed using a holistic rubric. All data is processed using data analysis tools on Microsoft Excel. The results showed the average test score of students at the time of the pre-test was 39.58 which then increased at the time of the post-test to 79.76. This increase is statistically significant as evidenced by the one-tail t-test where tcount = 37.33>ttable = 1.67 at α = 0.05 which means that Ho is rejected. So it can be concluded that there is an effect of giving open-ended problems to the students' ability to solve linear program problems.