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INDONESIA
NUMERICAL (Jurnal Matematika dan Pendidikan Matematika)
Published by Universitas Ma'arif Lampung
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Mathematics
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol. 3 No. 2 (2019)" : 6 Documents clear
Pendekatan Saintifik Menggunakan Software Graphmatica untuk Menumbuhkan Kemampuan Komunikasi Matematika Widiawati Widiawati; Indah Widyaningrum
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 3 No. 2 (2019)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v3i2.503

Abstract

The purpose of this study was to find out the mathematical communication skills of students during the scientific approach was applied using graphmatica software on function graph material in college. This research was an experimental study in the category of one group pretest posttest design involving 30 first semester students of mathematics education study program at STKIP Muhammadiyah Pagaralam. The results showed that students’ mathematical communication skills during the applied scientific approach using graphmatica software on function graph material were classified as very good. This means that the use of graphmatica software through the scientific approach can build students’ mathematical communication skills. Through the learning process based on a scientific approach consisting of observing, quetioning, associating, experimenting, and networking, students’ mathematical communication skills both verbally and in writing are classified as very good. For this reason, these activities have a positive influence on students. Beside building students’ mathematical communication this approach also influence students’ learning outcomes. Better the mathematical communication skills, better the learning outcomes. Therefore, building mathematical communication skills is very important in learning especially in learning through a scientific approach using graphmatica software. The use of graphmatica software can be used in other course such as calculus courses. So, graphmatica software can be used in other course so that it is not limited according to the design of the material to be implemented.
Implementasi Lembar Aktivitas Berbasis Pendekatan Saintifik untuk Meningkatkan Penalaran Spasial dan Self Esteem pada Mahasiswa Matematika Westi Bilda; Dian Nopitasari; Desty Haswati
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 3 No. 2 (2019)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v3i2.544

Abstract

Activity sheet is one of the tools that can be used in the learning activities by applying the desired learning steps. The aim of this study is to find out there is an increase in spatial reasoning and self esteem of students after using a scientific-based activity sheet on Geometri Analitik Datar subject. This type of research is one-group pretest-posttets design conducted by researchers before and after scientific-based activity sheets as treatment of this research. The subjects of this study were the second semester students who are learning Geometri Analitik Datar course consisted of 30 students. The research instruments used ware spatial reasoning test in the form of multiple choice tests and a self esteem questionnaire. The technical analysis used were a descriptive analysis and N-Gain analysis. The result of the research on spatial reasoning shows the pretest average score is 58.83 and the posttest average score is 76.17. It means that there is a significant increasing result between pretest and posttest that is 17.34. While the result of self esteem shows the pretest average score is 52.07 and the posttest average score is 73.60. It means that there is a significant increasing result in self esteem result that is 21.53. The results of the spatial reasoning and self esteem gain distribution range, both of them included medium criteria, that is 80%. Thus it can be concluded that the spatial reasoning and self esteem of students increases after applying learning using a scientific approach based activity sheet.
Optimasi Learning Rate Neural Network Backpropagation Dengan Search Direction Conjugate Gradient Pada Electrocardiogram Azwar Riza Habibi; Vivi Aida Fitria; Lukman Hakim
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 3 No. 2 (2019)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v3i2.603

Abstract

This paper develops a Neural network (NN) using conjugate gradient (CG). The modification of this method is in defining the direction of linear search. The conjugate gradient method has several methods to determine the steep size such as the Fletcher-Reeves, Dixon, Polak-Ribere, Hestene Steifel, and Dai-Yuan methods by using discrete electrocardiogram data. Conjugate gradients are used to update learning rates on neural networks by using different steep sizes. While the gradient search direction is used to update the weight on the NN. The results show that using Polak-Ribere get an optimal error, but the direction of the weighting search on NN widens and causes epoch on NN training is getting longer. But Hestene Steifel, and Dai-Yua could not find the gradient search direction so they could not update the weights and cause errors and epochs to infinity.
Analisis Pemahaman Calon Guru Matematika terhadap Konsep Garis dan Sudut Udiyono Udiyono; Muhammad Ridlo Yuwono
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 3 No. 2 (2019)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v3i2.605

Abstract

This study aims to determine the level of understanding of prospective mathematics teachers on line and angle material and their causes. This research is a case study. Subjects were selected using purposive sampling technique. This research instrument is an understanding test and interview guidelines. Method triangulation techniques are used to compare the results of understanding tests with interviews. Data analysis for understanding test results using a percentage level of understanding formula. Data analysis for interview results is data reduction, data presentation and conclusion drawing. The results showed that the level of achievement of the six aspects of understanding was less than 30%. The conclusions of this study are the level of understanding of prospective mathematics teachers in the material line and angle is still low.
Pedagogical Content Knowledge (PCK) pada Mahasiswa Calon Guru Matematika Annis Deshinta Ayuningtyas; Davi Apriandi
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 3 No. 2 (2019)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/numerical.v3i2.616

Abstract

Pedagogical Content Knowledge (PCK) is one of the basic knowledge that pre -services teachers must-have. PCK explained how the teacher linked material knowledge with knowledge about teaching. By mastering PCK pre-services teachers are expected to carry out effective learning. The purpose of this study is to describe the ability of pre-service mathematics teacher PCK. This type of research is descriptive qualitative. The subjects of this study were two pre-service teachers for the Mathematics Education Department at the Universitas Sarjanawiyata Tamansiswa. The instruments used were observation sheets, questionnaire sheets, linear program test questions, and interview guidelines. The data analysis technique of this study used descriptive qualitative analysis techniques. The results showed that based on indicators of PCK ability, pre-service teachers already knew and understood core competencies, basic competencies, and learning indicators and could make learning objectives, learning materials, reference sources, approaches, strategies, methods, and mathematical learning models. In addition, pre-service teachers can also make assessment plans, both the affective, cognitive, and psychomotor domains as well as the remedial and enrichment programs. Pre-service teachers are quite flexible and confident in teaching even though there are pre-service teachers who speak in small voices and the intonation has not varied. When viewed from the material side, the material provided by pre-service teachers to students is good even though there are still a few shortcomings. In general, pre-service teachers have a good understanding of content and pedagogical knowledge in theory, but implementation in planning and learning in class is still lacking
Pengembangan Lembar Kerja Siswa untuk Memfasilitasi Pencapaian Penguasaan Konsep Matematika Efuansyah Efuansyah; Reny Wahyuni
Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 3 No. 2 (2019)
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

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

Abstract

This research aims to develop worksheets to facilitate the ability to understand mathematical concepts in the material of one-variable linear equations, to determine the quality of worksheets developed in terms of validity and practicality, and to understand the ability to understand mathematical concepts after the use of LKS in one variable. The subjects were seventh grade students of Lubuklinggau 7th Junior High School. A development research that refers to the 4-D development model. In the Design phase includes: preparation of instruments consisting of validity LKS sheet, practicality assessment sheet LKS and test instruments for understanding mathematical concepts. Furthermore, the format selection consists of compiling the framework and systematic preparation of LKS, so that the prototype LKS is formed 1. Develop phase, the LKS is validated by mathematicians and experts, suggestions and comments from the validator are used as references in revising the LKS, thus producing a prototype 2. Next is LKS was tested in a small group and produced a prototype 3, then tested on a large group. The last stage is Disseminate, LKS products are distributed to class VII math teachers, principals, and grade VIII mathematics teachers. The quality of LKS developed based on the validity aspects is in the Good category with an average score of 4.0, while the quality of the LKS from the practical aspect is in the Excellent category with an average score of 0.84. In the test the ability to understand mathematical concepts is in the Good category with an average value of 80,966

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