Edumatsains
Jurnal EduMatSains merupakan wadah untuk menampung dan mempublikasikan hasil karya baik berupa hasil penelitian maupun kajian teori yang original dalam ruang lingkup pendidikan matematika dan pendidikan sains (fisika, kimia, biologi) serta ilmu matematika dan ilmu sains (fisika, kimia, biologi) bagi semua civitas academika khususnya dosen, guru, peneliti dan mahasiswa. Jurnal EduMatSains terbit sebanyak dua kali dalam satu tahun (Juli dan Januari). Jurnal EduMatSains diterbitkan Oleh Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia.
Articles
47
Articles
Peningkatan Kemampuan Bertanya dan Pemecahan Masalah Peserta Didik SMA dalam Pembelajaran Fisika Melalui Problem Based Learning

Lamanepa, Godelfridus Hadung, Panis, Isabel Coryunitha

EduMatSains Vol 3 No 1 (2018): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

This study aims to improve the ability to ask questions and problem solving skills of learners in the learning of physics through Problem Based Learning. This research is a classroom action research with two cycles in learning using problem based learning. Data collection techniques used to determine the ability to ask is by observation while for problem-solving skills using the test. Subjects in this study were students of Senior High School X class at St. Seminary Rafael Oepoi Kupang Academic Year 2017/2018. The results showed that: (1) there was an increase in the ability to ask learners in the second cycle; (2) there is an increase of mean value of problem solving ability of learners gradually that is from 68 at initial test, 72 at cycle I and 77 in cycle II. Keywords— Questioning skills, Problem Solving skill, PBL

Analisa Tingkat Kebisingan Taman Bermain Anak di Timezone Mall

Malau, Nya Daniaty, Jehadun, Angela Delviani

EduMatSains Vol 3 No 1 (2018): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Noise is one of the waveforms that can be heard by human hearing. Truth is the activation of sound that can not be done. The effect of sound on humans not only affects the auditory organ, but also can affect other organs, such as narrowing of blood vessels and heart system. Truth caused by transportation is very disturbing but not all of it is caused by transportation. Wisdom can also occur in public places or facilities such as hospitals and childrens playgrounds, one of the childrens and childrens favorite theme parks is TimeZone Mall. You can do research to measure and learn the level of playground at TimeZone Mall Taman Anggrek and TimeZone Tamini Square. The average measured result of 6 readings with calculations per 60 minutes in the orchid malls time zone is 70.5 dB and the tamini square time zone is 65.33 dB. In the time zone of the orchid mall park and the tamini square time zone there is no value beyond the threshold limit (85 dBA). With no measurement results exceeding the workspace limits for uninterrupted or preventive work.  Keywords: Noise, Timezone Mall, playground, sound

Sensitivitas Ligan Ditizon terhadap Absorbsi Logam Zink dengan Teknik Emulsi Membran Cair

Harefa, Nelius

EduMatSains Vol 3 No 1 (2018): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Contamination by zink metal can cause death in humans, animals, and plants. one of the uniqueness of this metal is that it can accumulate. consuming it at a low concentration does not cause death but if it happens continuously it will accumulate into high concentrate which can cause death. Ligand ditizon is one of the ligands which can absorb zink metal at low concentration, to be more efficient then used the liquid membrane emulsion technique which enables separation without going through the process of precipitation. Variations of concentration used is 1:3 v/v, 1:1 v/v and 3:1 v/v. Optimum absorption occurs at concentrations 1:3 v/v are 90.77%. Variations of liquid membrane emulsion duration used is 5 minute, 10 minute and 15 minute. Optimum absorption at duration 5 minute are 50.22%. Optimum absorption on the interaction between concentration and liquid membrane emulsion duration are 43.73% obtained F (392.76) >  Ftable (14.80). Keywords: ditizon, absorption, emulsion liquid membrane

Keanekaragaman Tumbuhan Pekarangan dan Pemanfaatannya Untuk Prasarana Pembelajaran Di Sekolah PSKD 1 Jakarta Sebagai Salah Satu Usaha Konservasi

Silalahi, Marina

EduMatSains Vol 3 No 1 (2018): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

The research on the diversity of yard plants and their utilization for learning infrastructure at the PSKD 1 school  in the Jakarta to the conservation efforts.  in The research was conductedat the January-April 2018through two step arethe exploration in the yard of PSKD 1 School 1 and interviews with thebiology teachers and Deputy Head. The plants found were recorded in local names, habits, and use. The data obtained were processed by using descriptive statistics. There were 93 local names of plants found in the PSKD 1Schoolyard in the Jakarta, which consisting of 86 species names belonging to 67 genus and 33 families. The Araceae, Asparagaceae, Arecaceae, and Moraceae are the families with the largest number of species  are 14, 10, 5 and 5 species respectively. In the biology study the plants in the yard are utilized in the biodiversity, ecological and plant morphology materials. The pinus (Pinus merkussi) and jamblang (Syzygium cumini) are the plants that to be difficult to find in Jakarta, but still found in the PSKD school yard. To maintain the sustainability of the plant needs to be multiplication through seeding and cuttings. Keywords: Shcool yard, PSKD, Pinus merkussi, Syzygium cumini

Perbedaan Peningkatan Kemampuan Pemecahan Masalah Matematika dengan Pendekatan Contextual Teaching and Learning di Kelas X

Naibaho, Agus Junsion

EduMatSains Vol 3 No 1 (2018): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

One of the changes in learning paradigm is the teacher centered learning centered student centered; the methodology which was originally more dominated by expository switches to participatory; and a more textual approach turns contextual. Reality seen in the field, students only memorize the concept and are less able to use the concept if it encounters real life problems related to the concept. The purpose of this research is to know the difference of improvement of problem solving problem of student mathematics with CTL approach on material of two linear equation system in class X SMA Negeri 1 Dolok Batu Nanggar. Population in this research is all student of class X SMA Negeri 1 Dolok Batu Nanggar T.A. 2017/2018, which consists of 10 parallel classes with an average number of students per class is 30 people. This study was conducted on two classes representing the population and has the same characteristics. Sampling and sample class determination in this study was taken randomly, using random sampling technique with the consideration that the characteristics of the class that the population is the same. Class X-10 as control class and X-3 class as experiment class. The test used to obtain data is a description form. The data in this study were analyzed by using inferential analysis statistical analysis. Inferential analysis of data is done by t-test. The results showed that there was an improvement in problem-solving ability with conventional approach with better contextual approach  Keywords : Problem Solving Abilities, Contextual teaching and learning Approach.

Pengaruh Perlakuan Panas terhadap Sifat Magnetik, Permitivitas dan Permukaan Komposit Ba(2-x)La(x)Fe2O5 ( x = 0,3 dan 0,5 )

Purwanto, Patricius, Mulyawan, Ade, Sarwanto, Yosef

EduMatSains Vol 3 No 1 (2018): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Composite  of Ba(2-x)La(x)Fe2O5 has been made by powder metallurgy techniques. Ba(2-x)La(x)Fe2O5 were made with mixing of  BaCO3, La2O3 and Fe2O3 with a specific weight ratio. The materials composite tobe made with the technique of powder metallurgy with milling method for 2  hours and heat treatment at  800 °C, 900 °C and 1000 °C for 5 hours. After the heat treatment tobe done characterization with using  Scanning Electron Microcope ( SEM ) to observe the surface morphology and magnetic properties with Vibrating Sample Magnetometer (VSM) to study the magnetic properties. The composite of Ba(2-x)La(x)Fe2O5 show that the magnetic moment and the magnetic field strength decrease with increasing temperature sintering. Permittivity of Ba(2-x)La(x)Fe2O5  relatif stable af frequence 1 Hz to 100 kHz. The results of surface morphology is known that the morphology of the granulars of composite Ba(2-x)La(x)Fe2O5, regular  grains with increasing temperature of sintering, the spectrum EDS (Energy Dispersive Spectroscopy) showed some dominant element  indicate that is have same phase of analysis and formation composite magnetic. The composite of Ba(2-x)La(x)Fe2O5 show that the magnetic moment and the magnetic field strength decrease with increasing temperature sintering Keywords: Composite Ba(2-x)La(x)Fe2O5, magnetic, pearmitivity, surface.

Meningkatkan Pemahaman Siswa tentang Teorema Pythagoras dengan Kotak Musik Spiral Theodorus

Simanjuntak, Maslina

EduMatSains Vol 3 No 1 (2018): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

The background of this journal is because of the low understanding level of students regarding the Pythagoras theorem. It is visile from the inability of students in deciding the Hypotenuse on right triangle and students often see the Pythagoras theorem formulas as a same. Even though both formulas may not be the same, they must firstly be defined what does it mean a,b,c. Writer is interested in solving those problems by using Spiral Theodorus music box as instructional media. The basic concept that writer use during the making of this media is to connect the Pythagoras concept with Spiral Theodorus. It is because writer think Spiral Theodorus use Pythagoras concept. This musix box can be used everyday by students so that the more often student used and see the Spiral Theodorus music box, the more they will increase their understanding about Pythagoras theorem. Keywords: Pythagoras, Kotak Musik Spiral Theodorus.

Peran Orang Tua Dalam Miningkatkan Motivasi Belajar Peserta Didik di Sd Negeri Saribi

Rumbewas, Selfia S., Laka, Beatus M., Meokbun, Naftali

EduMatSains Vol 2 No 2 (2018): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

The purpose of this study is to determine the role of parents in improving motivation learners in elementary school Saribi Orkeri District Biak Numfor District. The type of approach taken in this research is to use a qualitative approach. Qualitative research that will be conducted directly with a long time stages and directly included in the scope of the environment, but qualitative research is generally analyzed by inductive approach, especially at the time of the initial study. In this study the authors use descriptive research type that aims to describe the real things related to real conditions in the field. The tools used in this study are questionnaires, interview guides, and documentation. After the data is collected then, the authors analyzed by using descriptive analysis. The results of this study indicate that parents are instrumental in generating learning motivation learners. This was conveyed by one of the children who stated "they are very interested if there are parents beside them while studying at home". Giving motivation is important for parents so that the child can learn well at home and at school, because parents are the motivator for the child in generating motivation to learn the child before the child is guided by the teacher at school.  Keywords: Role of Parent, Learning Motivation

Pengembangan Macromedia Flash Dalam Pembelajaran Kimia Pada Materi Ikatan Kimia Untuk Meningkatkan Minat Belajar Siswa

Sormin, Elferida, Daeli, Rosmelia

EduMatSains Vol 2 No 2 (2018): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

This study aims to determine: the effect of the use of Macromedia Flash to student interest. The population in this study were high school PSKD 7 Depok and Sample in this research were students of class XI-IPA SMA PSKD 7 Depok academic year 2016/2017. Data collection tool used in this study is the use of a questionnaire pre-test and post test with purposive technique. Collecting data using a questionnaire to collect data on students perceptions of learning macromedia flash media usage data and student interest. Test requirements have been carried out in the form of normality test, test Homoegnitas, Hypothesis Testing with SPSS 2.0 for windows and Analysis of the data used in this study is a Likert Scale Test. The results of data analysis showed there was a positive influence among student interest in the use of learning media. Based on data analysis and hypothesis testing are carried out found that: (1) There is an increased interest of students of class XI-IPA SMA PSKD 7 Depok FY 2016/2017 in the matter of chemical bonds using Macromedia Flash it can be seen from the total score in the category Likert scale strongly agree (total score of 2603) and the data is normally distributed with sig> 0.05 and homogeneous with sig> 0, 05. (2) The percentage interest of students in chemical bonding materials increased by 18% after using Macromedia Flash.  Keywords: Instrucsional Media, Learning nteresting, Macromedia Flash.

Pengaruh Lama Pemanasan Terhadap Karakteristik Kristal Kalsium dari Limbah Cangkang Kerang

Afriani, Fitri, Mustari, Mustari, Tiandho, Yuant

EduMatSains Vol 2 No 2 (2018): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Original Source | Check in Google Scholar |

Abstract

The high number of tin mining in the Bangka Belitung Islands leaves a number of problems such as unused land after tin mining. Whereas on the other side, the post tin mining areas can be used as a source of water reserves although additional treatment is needed because it is feared contain heavy metals. Calcium oxide is a compound that can be used to coagulate dispersed pollutants in water so that it can be used to improve the quality of water stored in the post tin mining area. One of the most abundant sources of calcium in the Bangka Belitung Islands comes from wasted cockle shell. Through a heating process at temperatures of about 700°C calcium carbonate in the wasted cockle shell will begin to decompose into calcium oxide. Based on the results obtained have known that the longer the heating process then the decomposition process of calcium carbonate more and more occur.  Keywords: Rietveld, calcium crystal, heat treatment.