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All Journal International Journal of Evaluation and Research in Education (IJERE) Paradikma: Jurnal Pendidikan Matematika Jurnal Elemen AXIOM : Jurnal Pendidikan dan Matematika Jurnal Cendekia : Jurnal Pendidikan Matematika EDUTEC : Journal of Education And Technology Formosa Journal of Applied Sciences (FJAS)
Elmanani Simamora
Universitas Negeri Medan
Religion Control & Systems Engineering Decision Sciences, Operations Research & Management Education Engineering Mathematics Social Sciences Other

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Bootstrap Estimation of Confidence Intervals of Multiple Regression Model Parameters in the Presence of Multicollinearity Using Principal Component Analysis Chindy Eskana Nababan; Elmanani Simamora
Formosa Journal of Applied Sciences Vol. 2 No. 1 (2023): January, 2023
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/fjas.v2i1.2851

Abstract

Multicollinearity in multiple regression can result in biased parameter estimators and increase the risk of accepting the null hypothesis of the regression model as an insignificant variable. This study aims to determine the use of the Principal Component Analysis method in overcoming multicollinearity problems that occur in Facebook metric data and to implement the use of the PCA (Principal Component Analysis) method with Bootstrap in overcoming multicollinearity problems that occur in Facebook metric data. One method that can be used to overcome multicollinearity is principal component regression analysis. Principal component regression will produce a point estimate. To measure the accuracy of the point estimation, the bootstrap method can be used, which generates confidence intervals by resampling the data with returns. The results of this study indicate that the problem of multicollinearity in Facebook metric data can be resolved using Principal component analysis and point estimation and classical confidence intervals in principal component regression are not significantly different from the results of estimated means and bootstrap confidence intervals.
Keterkaitan Filsafat Matematika dengan Model Pembelajaran Berbasis IT Fairus Fairus; Izwita Dewi; Elmanani Simamora
Jurnal Cendekia : Jurnal Pendidikan Matematika Vol 7 No 1: Jurnal Cendekia: Jurnal Pendidikan Matematika Volume 7 Nomor 1 Tahun 2023
Publisher : Mathematics Education Study Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cendekia.v7i1.1921

Abstract

Filsafat dan matematika mempunyai keterkaitan dalam pembelajaran matematika, keterkaitan dapat dilihat pada model pembelajaran matematika terutama yang berbasis konstruktivistik dan berbasis teknologi. Tujuan dari penelitian ini adalah untuk memberikan kajian secara mendalam terhadap filsafat matematika, model pembelajaran matematika di tinjau dari sudut pandang filsafat pendidikan, menelaah berbagai refrensi terkait filsafat, filsafat pendidikan, filsafat matematika, model pembelajaran matematika kaitannya dengan filsafat, dan filsafat matematika kaitannya dengan model pembelajaran berbasis teknologi informasi. Teknik pengumpulan data menggunakan data sekunder yang berasal dari buku, artikel atau jurnal terkakreditasi dari tahun 2015 sampai dengan tahun 2022. Metode penelitian ini adalah studi literatur dengan pendekatan kualitatif. Teknik analisis data studi literatur menekankan pada referensi atau pustaka dari berbagai kajian filsafat, filsafat pendidikan, filsafat matematika, model pembelajaran matematika terkait dengan filsafat, dan filsafat matematika kaitannya dengan model pembelajaran berbasis teknologi informasi. Hasil pembahasan tulisan ini menyimpulkan bahwa: 1) Filsafat matematika memberikan pengaruh yang besar dalam pembelajaran matematika; 2) Model pembelajaran matematika harusnya dikaitkan dengan filsafat pendidikan, yakni mengaitkan konsep kehidupan nyata; 3) Pengintegrasian IT dalam model pembelajaran sangat mendukung proses pembelajaran sehingga pembelajaran menjadi lebih menarik, menumbuhkan minat belajar siswa, meningkatkan kemampuan matematis, meningkatkan motivasi belajar peserta didik, membuat pembelajaran menjadi lebih praktis, efektif dan efesien. Kebermanfaatan penelitian ini bagi orang lain adalah memberikan informasi dan pengetahuan terkait filsafat matematika terhadap model pembelajaran matematika berbasis IT.
Development of Hypercontent-Based Open-Ended Approach-Based Learning Devices to Improve SMK Students' Creative Thinking Abilities Putri Elmaretha Purba; Elmanani Simamora; Izwita Dewi
PARADIKMA: JURNAL PENDIDIKAN MATEMATIKA Vol 16, No 1 (2023): PARADIKMA JURNAL PENDIDIKAN MATEMATIKA (January - June 2023)
Publisher : Study Program of Mathematics Education of Unimed Postgraduate Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/paradikma.v16i1.42621

Abstract

This study aims to: 1) obtain learning tools developed using an open-ended approach using hypercontent that meet validity, practicability, and effectiveness to improve students' creative thinking skills; and 2) describe how to apply learning tools developed using an open-ended approach using hypercontent to improve students' creative thinking skills. This study is concerned with development. The ADDIE development paradigm was used in this study. 1) The development of learning tools based on an open-ended approach using hypercontent meets the criteria of validity, practicability, and effectiveness of learning tools; 2) In trial I and trial II, the ability to improve creative thinking skills using learning tools based on an open-ended approach using hypercontent increased from 0.22 with low criteria to 0.39 with moderate criteria.
Ethnomathematics approach integrated flipped classroom model: Culturally contextualized meaningful learning and flexibility Rahmi Ramadhani; Edi Syahputra; Elmanani Simamora
Jurnal Elemen Vol 9 No 2 (2023): July
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v9i2.7871

Abstract

The student-centered learning model has yet to adapt to the environment around students, including cultural contexts and traditions, and is less applicable and less effective for improving students' mathematical abilities. The meaningfulness obtained from mathematics learning based on activity has yet to provide optimal results, and there are still contradictions between learning theories and the application results. Therefore, this study aims to provide recommendations for developing new models and theories to optimize flexible and meaningful learning implementation using qualitative research methods with an integrative literature review approach. The results show that student-centered learning needs attention to personal factors and behaviors. Furthermore, learning with a cultural approach through an ethnomathematics context and flexibility in learning are also needed. The implication of this research is to recommend developing a model that integrates the flipped classroom model and the ethnomathematics approach. Meanwhile, a new theory was also proposed due to the development of the Cognitive-Social-Cultural Constructivist Theory of Learning (CSCCTL). Further studies on developing theories from the ethno-flipped classroom model should be conducted.
The construct validity of self-regulated learning questionnaire for senior high school students: a Rasch model analysis Rahmi Ramadhani; Edi Syahputra; Elmanani Simamora
International Journal of Evaluation and Research in Education (IJERE) Vol 13, No 3: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijere.v13i3.26816

Abstract

Self-regulated learning (SLR) is a condition in which students actively participate in the process of acquiring knowledge, and it closely relates to students’ metacognitive, motivational, and behavioral aspects. In order to measure this variable, an instrument was developed by referring to the Zimmerman cycle in the form of a questionnaire. Therefore, this study aims to analyze the construct validity of SLR questionnaires designed for high school students through Rasch model analysis. The method employed was descriptive quantitative research. The analyzed questionnaire consists of 50 positive statements, rated on 4-point Likert scale, and arranged of forethought, performance, and self-reflection phases. Furthermore, the construct validity was conducted on 235 third grade (XII) high school students in Gunungsitoli City (Indonesia), with a gender distribution of 58.29% female and 41.70% male. The results showed that the questionnaire with 4-rating scales satisfied the criteria for validity, gender inclusiveness, and unidimensionality based on Rasch model analysis for 25 statements. The implication of this research shows that the SLR questionnaire developed is valid and can be used in wider field research, especially in mathematics learning.
PERSPEKTIF FILSAFAT PENDIDIKAN MATEMATIKA TOKOH MASYARAKAT ACEH UTARA DALAM PRAKTIK PERHITUNGAN FARAID Lisa Lisa; Izwita Dewi; Elmanani Simamora
AXIOM : Jurnal Pendidikan dan Matematika Vol 12, No 2 (2023)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/axiom.v12i2.17549

Abstract

Pembelajaran matematika perlu menjadi jembatan untuk memberikan pengetahuan di kelas agar matematika dapat eksis dalam kehidupan sosial budaya sehari-hari Hal ini dilakukan untuk membantu siswa dan masyarakat lebih memahami pentingnya belajar matematika karena pembelajaran matematika erat kaitannya dengan aktivitas kehidupan bermasyarakat. Faraid merupakan ilmu pembagian harta warisan. Dalam menghitung faraid, ilmu matematika memegang peranan paling penting dalam menyelesaikan kasus pembagian harta warisan antar ahli waris. Hingga saat ini masih banyak masyarakat yang salah dalam membagi harta warisan sehingga timbul konflik antar keluarga karena menganggap pembagian harta warisan tidak adil. Hal ini terjadi dikarenakan pengetahuan masyarakat sangat terbatas terhadap matematika sehingga masih salah dalam hal pembagian warisan. Tujuan penelitian ini untuk mendeskripsikan pandangan tokoh masyarakat di Aceh Utara terhadap praktik perhitungan Faraid secara filsafat pendidikan matematika. Kualitatif deskriptif merupakan pendekatan penelitian ini dengan metode   etnografi. Hasi penelitian menunjukkan bahwa (1) persfektif perhitungan Faraid yang dilakukan oleh tokoh masyarakat Aceh Utara hampir sama untuk semua desa yaitu menggunakan metode pembagian ridha-meuridha atau tameu jeut-jeut; (2) keterkaitan filsafat pendidikan matematika dengan perhitungan Faraid dapat dilihat secara ontologi, epistemologi, dan aksiologi terkait praktik perhitungan Faraid; dan (3) perhitungan Faraid pada pembagian harta waris secara tidak langsung telah menerapkan konsep perhitungan matematika berupa konsep bilangan yaitu kelipatan persekutuan terkecil, sifat bilangan rasional, penjumlahan dan pengurangan bilangan, bilangan bulat positif dan perkalian pecahan dengan bilangan bulat. AbstractMathematics learning should be a bridge to provide knowledge in the classroom, so that mathematics can be applied in everyday socio-cultural life. This helps students and society better understand the importance of learning mathematics, as it is closely related to social life activities. Faraid is the science of dividing inheritance, where mathematics plays the most important role in resolving cases of dividing inheritance between heirs. However, many people still make mistakes in dividing inheritance, resulting in conflicts between families because they think the distribution of inheritance is unfair. This happens because people’s knowledge of mathematics is very limited, and they still make mistakes when it comes to dividing inheritance. The aim of this research is to describe the views of community leaders in North Aceh regarding the practice of Faraid calculations from the philosophy of mathematics education. The research uses descriptive qualitative approach and ethnographic methods. The results show that (1) the Faraid calculation perspective carried out by North Aceh community leaders is almost the same for all villages, namely using the ridha-meuridha or tameu jeut-jeut distribution method; (2) the relationship between the philosophy of mathematics education and Faraid calculations can be seen in terms of ontology, epistemology, and axiology related to the practice of Faraid calculations; and (3) Faraid’s calculations for the distribution of inheritance indirectly apply the concept of mathematical calculations in the form of number concepts, such as the least common multiple, the nature of rational numbers, addition and subtraction of numbers, positive integers, and multiplication of fractions with whole numbers.
Co-Authors Agustina Hariani Panjaitan Asmin Asmin Chindy Eskana Nababan Dessy Meylinda Edi Syahputra Edy Surya Fairus, Fairus Haris Hidayat Ismail Izwita Dewi Izwita Dewi Lisa Lisa Maulidia Wanahari Mukhtar Mukhtar Nenta Dumalia Siregar NETTI KARIANI MENDOFA Nur Indah Simamora Permata Sari Manurung Putri Elmaretha Purba Rahmi Ramadhani Waminton Rajagukguk Yenni Padila Siregar Zul Amry