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All Journal Journal of Mathematics Education and Application (JMEA)
Marah Doli Nasution
Universitas Muhammadiyah Sumatera Utara
Education Mathematics

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Students' Critical Thinking Ability Through the Application of the Creative Problem Solving (CPS) Model assisted by Autograph Zulfikar Zulfikar; Zainal Azis; Marah Doli Nasution
JMEA : Journal of Mathematics Education and Application Vol 1, No 3 (2022): Oktober
Publisher : JMEA : Journal of Mathematics Education and Application

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jmea.v1i3.12099

Abstract

This study aims to examine differences in critical thinking skills between groups of students who apply Autograph-aided Creative Problem Solving learning models and students who apply Creative Problem-Solving learning models without the help of autographs and see students' positive attitudes in learning Creative Problem-Solving models. This research is experimental research at YPK Medan Private Middle School. The sample selection used as the experimental group, and the control group was carried out randomly (random cluster sampling). The instrument used was a set of tests of critical thinking skills in mathematics. The results showed that the ability to think critically in students who applied the CPS model using Autograph was better, with a percentage of mastery learning by 85.27%. In comparison, the group of students who applied the CPS model gained a percentage of mastery learning by 78.16%. There was a positive attitude of students applying the autograph-aided CPS model when learning takes place.
Improved Mathematical Representation of Students With The Open-Ended Approach M. Syahdan Tarigan; Zainal Azis; Marah Doli Nasution
JMEA : Journal of Mathematics Education and Application Vol 1, No 3 (2022): Oktober
Publisher : JMEA : Journal of Mathematics Education and Application

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jmea.v1i3.12096

Abstract

The innovative design of this study was to create a non-equivalent pre-test and post-test control group. The population of this study includes all Class IX students at PGRI 3 Medan Private Secondary School, consisting of 116 students, and the selected sample consists of two classes. The tools used are descriptive forms of mathematical representation tested and validated. The results of these studies showed that students who received open methods were much better at expressing themselves accurately than students who received traditional methods. Show that the open-ended approach can improve students' mathematical expression, even if the results are suboptimal because students' grades are still poor. This happens because the open-ended approach allows students to solve problems in different ways and create multiple representations of the problem.
The Effectiveness of the Discovery Learning Model on the Metacognitive Ability of the Students of SMP Negeri Satap Lesten Gayo Lues Regency Nora Fadillah; Marah Doli Nasution; Zulfi Amri
JMEA : Journal of Mathematics Education and Application Vol 1, No 3 (2022): Oktober
Publisher : JMEA : Journal of Mathematics Education and Application

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jmea.v1i3.12097

Abstract

Research is research involving one class as an experimental class. The purpose of this study was to determine the effectiveness of using a discovery learning model to apply mathematical learning with Pythagorean material. It is related to the metacognitive abilities of eighth-grade middle school students. This study is a quasi-experimental study. The population in this study were all grade VIII students of SMP Negeri Lasten Kab, Gayo Lues for the academic year 2020/2021, which amounted to 9 classes. The sample was drawn using cluster random sampling so that a sample of Class VIII-1 students was obtained from 17 female students and 15 male students. men, as the experimental class without a control class group. The research test instrument used was an initial mathematical ability test and a student's metacognitive ability test by learning the Discovery Learning model. Analysis, descriptive analysis and inferential analysis of the data used. From the research conducted, findings (1) indicate that students' initial math skills remain low prior to applying the discovery learning model for learning. (2) The metacognitive ability scores of the learning models were found to be in the good category. Based on the results of the research conducted, it can be said that learning using the discovery learning model effectively improves the metacognitive abilities of the class VIII SMP Negeri Lasten Kab, Gayo Lues.
Co-Authors M. Syahdan Tarigan Nora Fadillah Zainal Azis Zulfi Amri Zulfikar Zulfikar