Article Per Year (5 Year)
p-Index From 2020 - 2025
1.259
P-Index
This Author published in this journals
All Journal Jurnal Didaktik Matematika KALAMATIKA Jurnal Pendidikan Matematika Transformasi : Jurnal Pendidikan Matematika dan Matematika Jurnal Ilmiah Pendidikan Matematika Al Qalasadi Edumatica: Jurnal Pendidikan Matematika Jurnal Polimesin Jurnal Pendidikan MIPA
Elizar Elizar
Universitas Syiah Kuala
Automotive Engineering Control & Systems Engineering Education Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
A Multigroup Invariance Analysis and Gender Difference of Students’ Self-efficacy and Attitude Concerning Mathematics Elizar Elizar; I Gusti Ngurah Darmawan
Didaktik Matematika Vol 5, No 2 (2018): Jurnal Didaktik Matematika
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (459.936 KB) | DOI: 10.24815/jdm.v5i2.11640

Abstract

This article aimed to examine multigroup invariance of Mathematics Self-efficacy and Attitude Scales (MSAS) and examine the differences of MSAS in term of gender. 1135 (630 female and 505 male) Year 9 students in Aceh, Indonesia were involved in the study. The invariance analysis was performed to investigate whether the items in the MSAS are behaving identically for Year 9 female and male students in the province of Aceh, Indonesia. The results reported the indication of multigroup equivalence of the MSAS between gender (p-value is not statistically significant or ∆CFI ≤ 0.01). An independent t-test indentified that students’ attitude concerning mathematics is significantly different between gender of students. Female students’ positive attitude concerning mathematics is higher compared to male students’. This study may be used as one of the evidences as for the needs to enhance male students attitude toward mathematics.
EXPLORING TEACHER’S AND STUDENTS’ BELIEFS CONCERNING HIGHER ORDER THINKING IN MATHEMATICS Elizar Elizar; Cut Khairunnisak
TRANSFORMASI Vol 6 No 1 (2022): TRANSFORMASI : Jurnal Pendidikan Matematika dan Matematika
Publisher : Pendidikan Matematika FMIPA Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/tr.v6i1.1958

Abstract

Teacher beliefs play a fundamental role in mathematics teaching and learning, as they will ultimately influence the teacher's classroom practices. Student beliefs on a subject matter also hold equal importance as they will be reflected in how the students approach the learning and related issues to the subject. The importance of research on teachers' beliefs stems from the possible relationship between teacher beliefs and student beliefs. This descriptive quantitative study aimed to measure the degree of conformity between teacher and student beliefs concerning mathematics related to Higher Order Thinking (HOT) and Lower Order Thinking (LOT). The population was all Year 9 students in Aceh, Indonesia, and the samples were 1135 Year 9 students and 46 Year 9 mathematics teachers from 25 schools selected through stratified random sampling. Data collection was obtained through teacher and student questionnaires, and data were analyzed descriptively by SPSS 20. The finding of this study revealed that teacher beliefs concerning mathematics related to HOT were highly positive (83%). While the percentage of students who hold highly positive beliefs concerning mathematics related to HOT was just over 50%, indicating the discrepancy between teacher and student beliefs. However, regarding the beliefs concerning mathematics related to LOT, teacher and student beliefs conformed; they had somewhat positive beliefs (68% and 71.30%, respectively). This study implies that teachers need to promote HOTS in mathematics teaching at schools to foster students’ positive beliefs toward HOT.
VALIDITY OF GUIDED INQUIRY-BASED LEARNING INSTRUMENT WITH GEOGEBRA APPLETS FOR TEACHING CIRCLES Stri Pertiwi; Mailizar Mailizar; Elizar Elizar
KALAMATIKA Jurnal Pendidikan Matematika Vol 8 No 1 (2023): KALAMATIKA April 2023
Publisher : FKIP Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/KALAMATIKA.vol8no1.2023pp63-76

Abstract

The guided inquiry learning model is a student activity that emphasizes maximally training critical thinking skills. The learning instruments developed must be adapted to the syntax/stages of the guided inquiry learning model. Several learning instruments have been developed to assist teachers in making teaching materials. However, many teachers have not mastered technology, especially learning media using applications. Therefore, teachers need learning applications in schools, such as the GeoGebra applet. This study aims to develop valid guided inquiry-based learning instruments using GeoGebra applets for circles. This research is development research employing Plomp’s model and involving preliminary research and prototyping stages. The data was collected by compiling the comments and input from the validator through validation sheets related to learning instruments (lesson plans, worksheets, and GeoGebra applets). The results of the data analysis showed that the learning instruments were declared valid with an average lesson plan score of 4.75, an average student worksheet validation score of 4.60, and an average value of the total validation of GeoGebra applets of 4.94. Further research should assess the practicality and effectiveness of the instruments.
Students’ Errors in Solving Plane Geometry Problems Using E-Learning-based Diagnostic Tests Mukhlis Hidayat; Tuti Zubaidah; Munira Ulfa; Elizar Elizar
Didaktik Matematika Vol 10, No 1 (2023): April 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (689.838 KB) | DOI: 10.24815/jdm.v10i1.31938

Abstract

During the Covid-19 pandemic, the implementation of online and shift learning systems has been identified as one factor contributing to learning loss in mathematics problem-solving skills specifically in plane geometry problems. The primary objective of this research was to investigate the different types of errors committed by junior high school students in Banda Aceh, Indonesia, in solving plane geometry problems using e-learning diagnostic tests. A descriptive qualitative approach was adopted, and 24 Year 8 students were selected as subjects. The data were collected through tests and interviews, and data analysis involved data reduction, data presentation, data verification, and drawing conclusions. The findings revealed that the percentage of students' errors in solving conceptual problems, principal problems, and verbal problems were 76.39%, 68.75%, and 75%, respectively. Subsequently, the results from the second test and interviews with six students showed that students encountered several conceptual errors, including errors in stating angle symbols, errors in identifying the type of shape provided, errors in deducing information regarding properties, perimeter, and area of plane geometry, lack of knowledge regarding the application of the appropriate plane geometry formula, and inability to solve problems using the correct procedure. Principal errors were related to algebraic operations, while verbal errors involved translating problems and improper application of concepts and principles. The understanding of the types of errors will help teachers detect errors made the students early.
Kemampuan Komunikasi Matematis Siswa Kelas VIII pada Pola Bilangan melalui Pendekatan Realistic Mathematics Education (RME) Nazira Nazira; Yuhasriati Yuhasriati; Elizar Elizar
Jurnal Ilmiah Pendidikan Matematika Al Qalasadi Vol 7 No 2 (2023): JURNAL ILMIAH PENDIDIKAN MATEMATIKA AL QALASADI
Publisher : Prodi Pendidikan Matematika, Fakultas Tarbiyah dan Ilmu Keguruan IAIN Langsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32505/qalasadi.v7i2.7404

Abstract

Research on mathematical communication skills has a background on the importance of student's ability to organize ideas and thoughts when solving problems. This study aimed to determine students' mathematical communication abilities on number pattern material through learning with the RME approach at one of the Banda Aceh Middle Schools. The approach used in this research is descriptive qualitative. The subjects were 24 students, and three students were interviewed. Data was collected through interviews, which were analyzed in three stages: data reduction, data presentation, and drawing conclusions. The research showed that mathematical communication skills through learning with the RME approach for number pattern material experienced good development. Students in the high and medium categories can master drawing, written text, and mathematical expression indicators. Students in the low category can master drawing and mathematical expression indicators. The results showed that students experienced problems communicating mathematically in conveying ideas orally and in writing. As a result, an error occurred in solving the problem. This research is expected to be a reference for improving students' mathematical communication skills during the learning process.
Model Pembelajaran Flipped Classroom untuk Peningkatan Hasil Belajar Matematika Siswa SMP Puja Maiprillia; Mailizar Mailizar; Elizar Elizar
Edumatica : Jurnal Pendidikan Matematika Vol 12 No 3 (2022): Edumatica: Jurnal Pendidikan matematika (Desember 2022)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/edumatica.v12i03.20424

Abstract

Cognitive ability is one of the mathematics learning outcomes. Low cognitive ability affects student learning outcomes, and teachers must overcome these problems. This study aimed to see the variation in the improvement of mathematics learning outcomes between students who used the flipped classroom model and those who did not. This study applied a quantitative approach with a quasi-experimental design and a non-equivalent (pre-test and post-test) control group design. The population is Year 8 students at one of the public junior high schools in Aceh, Indonesia. By simple random sampling, the samples selected were one experimental class and one control class. The research instrument involves the pythagorean theorem test, while the instruments include lesson plans, student worksheets, and learning videos. The data were collected through pre-test and post-test. The data analysis was carried out by t-test to observe the difference in improving students' mathematics learning outcomes in the two classes. The results show that 1) the increase in students' mathematics learning outcomes was better when using the flipped classroom model than those without the model; 2) the increase in learning outcomes of the experimental class was in the high category while it was in the medium category for the control class.
Abilities and Difficulties of Ninth-Grade Students in Solving Geometry Transformation Problems Tasya Aprilla Trisna; M Ikhsan; Elizar Elizar
Jurnal Pendidikan MIPA Vol 23, No 4 (2022): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Geometry is one of the challenging subjects for students. This study aimed to determine the ability of students to solve geometric transformation problems, the difficulties they experienced, and the causes. This research employed a mixed method with a sequential explanatory design. Eight Year 9 students were the subjects of this study. Data were collected through tests and interviews. The data were analyzed quantitatively, followed by qualitative analysis involving reducing data, presenting data, and concluding. The results indicated that the student's ability to solve geometric transformation problems was moderate. Students found it difficult to solve geometric transformation problems. The student's difficulties included determining the translation when a starting point and an image point were given and determining the image of a point/curve by a transformation. Students had not fully mastered the schemes in the geometric transformation, were not proficient in using formulas, and were not precise in their calculations.Keywords: students’ difficulty, transformation, translation, rotation, dilatation.DOI: http://dx.doi.org/10.23960/jpmipa/v23i4.pp1724-1737
IoT-Enhanced mechanical system for fogponic cultivation: Air circulation and environmental control Fahri Heltha; Yunidar Yunidar; Rizal Syahyadi; Melinda Melinda; Rizki Azhari; Elizar Elizar
Jurnal Polimesin Vol 23, No 1 (2025): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i1.6183

Abstract

Fogponic cultivation, a hydroponic technique that utilizes water mist for nutrient delivery, offers a significant advantage in water and nutrient efficiency. However, suboptimal air circulation, temperature, and humidity in the root chamber can hinder plant growth and nutrient uptake. This study develops an IoT-enhanced mechanical system to optimize environmental conditions in a fogponic root chamber for cultivating spinach (Spinacia oleracea) seedlings. An actuator in the form of a fan was integrated to regulate air circulation, and managed by a Proportional Integral Derivative (PID) controller for precise temperature and humidity control. The system was monitored using the IoT-based Blink application. The results showed that the PID controller effectively regulated environmental conditions, with optimized parameter values: Kp = 5.76, Ki = 0.576, and Kd =14.4. Performance comparisons with P, PI, and PD controllers demonstrated effective humidity control, achieving the target set point of 92% with rise times of 447–1090 seconds and steady-state errors of 0–0.5%. By integrating mechanical components such as the fan with IoT-based monitoring, the system achieves continuous adjustments to the environment, enhancing plant growth conditions. 
Co-Authors Cut Khairunnisak Fahri Heltha I Gusti Ngurah Darmawan M Ikhsan Mailizar Mailizar Melinda Melinda Mukhlis Hidayat Munira Ulfa Nazira Nazira Puja Maiprillia Rizal Syahyadi Rizki Azhari Stri Pertiwi Tasya Aprilla Trisna Tuti Zubaidah Yuhasriati Yuhasriati Yunidar Yunidar