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All Journal Mandalika Mathematics and Educations Journal Pattimura Proceeding : Conference of Science and Technology
Gustia, Satria Kamal
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology Mathematics Physics

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Validity and Reliability of Mathematical Reasoning Ability Instruments in High Schools with Winsteps Syahwa, Keysha Alifia; Gustia, Satria Kamal; Faradillah, Ayu; Ulfah, Syafika
Pattimura Proceeding Vol 5 No 1 (2024): Prosiding Konferensi Nasional matematika (KNM) XXII Tahun 2024
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ppcst.knmxxiiv5i1p11-20

Abstract

The mathematical reasoning ability in understanding mathematical material in high school students still has not touched perfect scores. A valid and reliable instrument is needed in measuring mathematical reasoning skills in students. Validity and reliability testing of the instrument is carried out to ensure whether an instrument can be used to provide accurate results in a measurement being performed. Therefore, this study aims to determine the level of validity and reliability of mathematical reasoning skills in students using Winsteps. The method used in this study is a quantitative survey method, with 252 respondents in high schools in Jakarta. This study uses 3 indicators that are a reference in measuring the mathematical reasoning ability possessed by students. The validity test on the instrument shows that all items on the instrument are valid because they meet the criteria of MNSQ, ZSTD, and Pt Mean Corr except for item 1 which has a ZSTD value of > 2.0 and item 3 has a ZSTD value of < -2.0. Meanwhile, the reliability test obtained an Alpha Cronbach calculation of 0.74 which means that the value of the reliability item is high so that the instrument is declared reliable for use. The DIF analysis using winsteps shows that all question items used in the instrument are valid because none of the question items contain bias referring to the DIF Analysis criteria, namely the DIF Contrast value > 0.5 and the probability value < 0.05 where all the value of the question items actually obtained a DIF Contrast value of < 0.5 and a probability value > 0.05.
Hubungan Self Efficacy dan Motivasi Belajar dengan Kemampuan Pemecahan Masalah Matematis Siswa SMA pada Materi SPLTV Gustia, Satria Kamal; Esti Ambar Nugraheni
Mandalika Mathematics and Educations Journal Vol 7 No 2 (2025): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i2.9304

Abstract

This research aims to determine whether there is a significant relationship between self-efficacy and mathematical problem solving abilities, as well as between learning motivation and mathematical problem solving abilities. Apart from that, this research also aims to find out whether there is a significant relationship between self-efficacy and learning motivation together with the mathematical problem solving abilities of class X students at SMAN 1 Tajurhalang on SPLTV material. This research uses a quantitative approach with correlational methods. The population in this study included all 360 class X students, with a sample of 199 students from six classes. Data collection was carried out through tests to measure mathematical problem solving abilities on SPLTV material, as well as questionnaires that measured students' levels of self-efficacy and learning motivation. The results of the analysis using the Pearson correlation coefficient and multiple correlation show that there is a significant relationship between self-efficacy and mathematical problem solving ability, with a value of r = 0.202 which is classified as a low relationship. Meanwhile, the relationship between learning motivation and mathematical problem solving ability obtained a value of r = 0.194, which is in the very low category. Further analysis also shows that together, self-efficacy and learning motivation have a significant relationship with mathematical problem solving abilities, with a value of r = 0.211 which is in the low relationship strength category.
Co-Authors Esti Ambar Nugraheni, Esti Ambar Faradillah, Ayu Syahwa, Keysha Alifia Ulfah, Syafika