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All Journal MES: Journal of Mathematics Education and Science Journal of Didactic Mathematics
Winmery Lasma Habeahan
AMIK D3 Medicom
Education Mathematics

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Analisis kepercayaan diri mahasiswa pendidikan matematika dalam pembelajaran daring di era pandemi covid-19 Fitriani Fitriani; Benny Sofyan Samosir; Winmery Lasma Habeahan
Journal of Didactic Mathematics Vol 2, No 3 (2021): December
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jdm.v2i3.1040

Abstract

Self-confidence is one of the affective aspects that must be considered and developed, especially in building student readiness in undergoing online learning in the current pandemic era. This study aims to analyze the confidence of mathematics education students in online learning in the era of the covid-19 pandemic. This research use descriptive qualitative approach. The subjects of this study were first semester students who took the Differential Calculus course in the Mathematics Education study program at the Universitas Muhammadiyah Tapanuli Selatan for the 2021/2022 academic year. The instrument used in this research is a questionnaire. The data obtained in this study were analyzed descriptively. Based on the results of the study, it shows that the indicators of student self-confidence in online learning in the era of the covid-19 pandemic have not fully achieved, but most of the indicators have mostly achieved self-confidence, namely the first indicator of believing in self-ability, most of them have achieved self-confidence. Students also have not fully met the second indicator, namely being able to act independently in making decisions. In the third indicator having a positive self-concept, most students have achieved this indicator. In the fourth indicator, namely daring to express opinions, almost some students have the courage to express opinions. To further increase student confidence, it is necessary to provide innovation in the implementation of online learning.
PERBEDAAN PENINGKATAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIS DENGAN PENDEKATAN CONTEXTUAL TEACHING AND LEARNING DI KELAS X SMA NEGERI 2 PEMATANGSIANTAR Winmery Lasma Habeahan
Journal of Didactic Mathematics Vol 1, No 2 (2020): August
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.203 KB) | DOI: 10.34007/jdm.v1i2.304

Abstract

The purpose of this study was to determine the differences in the improvement of students' mathematical problem-solving abilities with the Contextual Teaching and Learning approach in the material of the two-variable linear equation system in class X SMA Negeri 2 Pematangsiantar. This study used an experimental method with the aim of being in accordance with the previous statement to determine the difference in students' mathematical problem-solving abilities with a contextual approach and an expository approach, with a randomized pretest-posttest control group design. The average increase in problem-solving abilities in the control class was 0.1688 while the increase in problem-solving abilities in the experimental class was 0.0085. By using the t-test (SPSS), with a value of Fcount = 10.907 and a significant level of 0.05, a significant probability is obtained 0.002 <0.05, it can be concluded that there is a difference in normalized gain or an increase in problem-solving ability with conventional and contextual approaches. Based on the average gain of the control and experimental classes, the increase in the control class using the conventional approach is higher than the experimental class with the contextual approach. The difference in increasing problem-solving abilities in conventional classrooms is possible due to differences in students' entry-level abilities, which can be seen in the average pretest of each class.
PENGARUH SELF EFFICACY TERHADAP KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA DI SMA HARVARD Winmery Lasma Habeahan; Meilisa Malik; Muhammad Huda Firdaus
MES: Journal of Mathematics Education and Science Vol 8, No 2 (2023): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v8i2.6995

Abstract

The aim of this study was to determine the effect of students' self-efficacy on the mathematical creative thinking abilities of students at Harvard High School. The subjects in this study were students of class X-IPA 1 which consisted of 20 students. This research is a true experiment research, with a one group pretest-posttest research design. Data collection was carried out through an instrument test for mathematical creative thinking ability and a non-test instrument test in the form of a self-efficacy questionnaire. Data analysis techniques were carried out through the Independent Sample t test using the SPSS application. The results of the study show that: There is an effect of self-efficacy on the ability to think creatively at Harvard High School
Co-Authors Benny Sofyan Samosir Fitriani Fitriani Meilisa Malik Muhammad Huda Firdaus