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All Journal JURNAL PENA EDUKASI (JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Jurnal Ekonomi Efektif
Nugraha, Derry
STKIP PGRI Sukabumi
Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Mathematics Other

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IMPROVING MATHEMATICAL COMMUNICATION CAPABILITIES BY REALISTIC MATHEMATICS APPROACH Juliati, Juliati; Firman, Muhammad; Nugraha, Derry
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol 1, No 3 (2018): VOLUME 1 NUMBER 3, SEPTEMBER 2018
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.327 KB) | DOI: 10.22460/jiml.v1i3.p338-344

Abstract

The background of this study is the lack of mathematical communication skills (MCS) of junior high school students in Cimahi. This study aims to examine the achievement and improvement of MCS of junior high school students in Cimahi by realistic mathematical approaches. This study involved two groups, namely the experimental group and the control group. All groups were given a pretest and posttest. The experimental group obtained mathematics learning with realistic mathematical approaches as treatment and control groups obtained mathematics learning as usual as a treatment. This research method is an experimental research with pretest-posttest control group design, namely the design of the pretest posttest control group that involves two groups and randomly sampled classes. The population in this study were junior high school students in Cimahi, while the sample consisted of two randomly selected classes. Obtained class VIII M (experimental class) and class VIII K control class. The instrument used was a 5-item MCS description test, then the skills scores MCS students' were analyzed with descriptive and inferential statistics using assistance Minitab 17. Based on the results of the study, it was concluded that the achievement and improvement of students' MCS using mathematical realistic approaches were better than students who used ordinary learning.
Pengaruh Disiplin Terhadap Kinerja Karyawan Pada PT Glenindo Citra Abadi Di Jakarta Muhammad Firman; Heri Ginanjar; Derry Nugraha
Jurnal Ekonomi Efektif Vol 4, No 2 (2022): JURNAL EKONOMI EFEKTIF
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JEE.v4i2.17114

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh disiplin terhadap kinerja karyawan pada PT. Glenindo Citra Abadi di Jakarta. Metode yang digunakan adalah explanatory research dengan sampel sebanyak 97 responden. Teknik analisis menggunakan analisis statistik dengan pengujian regresi, korelasi, determinasi dan uji hipotesis. Hasil penelitian ini variabel disiplin diperoleh nilai rata-rata skor sebesar 3,418 dengan kriteria baik. Variabel kinerja karyawan diperoleh nilai rata-rata skor sebesar 3,845 dengan kriteria baik. Disiplin berpengaruh positif dan signifikan terhadap kinerja karyawan dengan nilai persamaan regresi Y = 9,393 + 0,850X, dan nilai koefisien korelasi 0,766 atau memiliki tingkat hubungan yang kuat dengan nilai determinasi 58,7%. Uji  hipotesis diperoleh signifikansi 0,000 < 0,05.
Pengaruh Disiplin Terhadap Kinerja Karyawan Pada PT Glenindo Citra Abadi Di Jakarta Miftah Amir; Laely Purnamasari; Derry Nugraha
Jurnal Ekonomi Efektif Vol 4, No 1 (2021): JURNAL EKONOMI EFEKTIF
Publisher : Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/JEE.v4i1.14498

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh lingkungan kerja  terhadap produktivitas karyawan pada PT. Duta Melindo Pratama di Jakarta. Metode yang digunakan adalah explanatory research dengan sampel sebanyak 97 responden. Teknik analisis menggunakan analisis statistik dengan pengujian regresi, korelasi, determinasi dan uji hipotesis. Hasil penelitian ini variabel lingkungan kerja  diperoleh nilai rata-rata skor sebesar 3,411 dengan kriteria baik. Variabel produktivitas karyawan diperoleh nilai rata-rata skor sebesar 3,841 dengan kriteria baik. Lingkungan kerja  berpengaruh positif dan signifikan terhadap produktivitas karyawan dengan nilai persamaan regresi Y = 9,220 + 0,856X, dan nilai koefisien korelasi 0,777 atau memiliki tingkat hubungan yang kuat dengan nilai determinasi 60,4%. Uji  hipotesis diperoleh signifikansi 0,000 < 0,05. 
Problem Solving Ability and Problem Based Learning Derry Nugraha; Heri Ginanjar; Rosalina Rolina
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol 1, No 3 (2018): VOLUME 1 NUMBER 3, SEPTEMBER 2018
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.4 KB) | DOI: 10.22460/jiml.v1i3.p239-243

Abstract

The research was caused by the poor of mathematical problem solving ability of students. This research aimed to compare of mathematical problem solving between students who learned through problem based learning and scientific approach. The method was an experimental method with a pretest-posttest control group design involving two groups and random sampling. At the first and end of learning, the two classes are given a test. The population in this research were Madrasah Aliyah students in Cimahi, while the sample consisted of two randomly selected classes. One class  which was given problem based learning and other class was given a scientific approach. The instrument was a set of  5-item mathematical problem solving test description, then those were analyzed with descriptive and inferential statistics using the help of minitab 17 software. Based on the results of the research, the conclusion was  the improvement of  mathematical problem solving  of students using problem based learning was better than students who use a scientific approach. 
Pengaruh Metode Simulasi Dan Metode Demonstrasi Terhadap Hasil Belajar Mahasiswa Derry Nugraha; Miftah Amir; Nurkomala Nurkomala
JURNAL PENA EDUKASI Vol 10, No 1 (2023): April 2023
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jpe.v10i1.1094

Abstract

Abstract: Basically education is considered as an important tool to build the intelligence and personality of the Indonesian nation. The purpose of this study was to determine the effect of the simulation method and the demonstration method on student learning outcomes at STKIP PGRI Sukabumi. This type of research is associative research with a quantitative approach. The population in this study were all STKIP PGRI Sukabumi students. The sample technique used in this research is random sampling technique. With a sample of 100 students. The results of the study showed that there was a positive and significant influence between the variables of the simulation method and the demonstration method on student learning outcomes with a value of (25.267) > (3.09). While the sig column. shows a probability value of 0.000 < 0.005. The magnitude of the contribution of the effect of the simulation method and the demonstration method on learning outcomes is 34.3% and the remaining 65.7% is influenced by other factors. Keywords: simulation method; demonstration method; student learning outcomes
Co-Authors Heri Ginanjar Heri Ginanjar Juliati, Juliati Laely Purnamasari Miftah Amir Muhammad Firman Muhammad Firman Nurkomala Nurkomala Rosalina Rolina