Indonesia Conference Directory

Corresponding Author
Haerul Pathoni

Institutions
1Program Studi Pendidikan Fisika, Universitas Jambi, Jl. Jambi-Muara Bulian Km15 Mendalo Indah, Muara Jambi, Jambi, Indonesia, 36361
2Program Studi Teknik Elektro, Universitas Jambi, Jl. Tri Brata Mestong Pondok Meja Muara Jambi, Jambi Indonesia , 36364

Abstract
Abstract — Speed bump was a device for producing mechanical energy from a motor run through it. Piezoelectric was a device for producing electrical voltage that sourced from the energy pressed the piezoelectric. This research used speed bump as a source of mechanical energy which pressed piezoelectric for producing voltage. The results showed that piezoelectric speed bumps producing varied voltages. The voltage resulted that varying the highest voltage generated around 1 - 1.8 volts. In the other research the resulting voltage was not so high. It depended on many factors finding in the field.

Keywords
Speed Bump, piezoelectric, Voltage

Topic
Physics

Link: https://ifory.id/abstract/3eyjHuzL9bWq

Corresponding Author
Sifak Indana

Institutions
a) Science Education Study Program, Master Program, Universitas Negeri Surabaya

Abstract
The purpose of this study was describing effectiveness rate of learning material by ICT-based Guided Inquiry Model in training critical thinking skill and science literacy junior high school student. Before being tested to junior high school students, the developed learning material was assessed by expert for the validity rate. It was known that the developed learning material was very valid. Then, the learning material was tested on 30 seventh-grade students of SMPN SATAP Kenduruan, Tuban, East Java, batch of 2017/2018. This data was obtained by critical thinking and science literacy test method. The result of this study showed that the average of pretest was 39.9 point (very less critical) and the average of posttest was 75.5 point (critical) by N-gain score was 0.7, categorized as high score. That result could explain us that critical thinking skill of students in SMPN Satap Kenduruan was increased, from very less critical to critical. So, it can be concluded that learning material by ICT-based guided inquiry model was effective for training critical thinking skill and junior high school students- science literacy.

Keywords
learning material; Guided inquiry model; ICT; critical thinking; science literacy; junior high school

Topic
Biology Education

Link: https://ifory.id/abstract/vLZ9Pau7WhqD

Corresponding Author
Nike Anggraini Anggraini

Institutions
(a*)Program Studi Pendidikan Biologi, Universitas Sriwijaya, Jl. Srijaya Negara, Bukit Lama, Palembang 30128, Sumatera Selatan Palembang
(b)Program Studi Pendidikan Biologi, Universitas Bengkulu, Jl. WR Supratman, Kota Bengkulu 38122, Indonesia
(c) Program Studi Pendidikan IPA, Universitas Bengkulu, Jl. WR Supratman, Kota Bengkulu 38122, Indonesia

Abstract
This research aims to : 1) knows and inventory the types of invertebrates which is in the rats island; 2) development of biology instructional media based on macromedia flash for student high school to matter in the second semester class X for animalia subjek, 3) Know the quality of learning based media invertebrates macromedia on the assessment of the and teachers biology. This methods for invertebrates inventory on the rat island, withh a survey method, interview, and dexplorative description to another biota on the island. The development of product learning based macromedia flash, is R and D research ( Research and Development) with used the ADDIE Model ( Analysis, Design, Development and Production, Implementation, Evaluation). Based on the Research, there was any 18 Species from 6 phylum invertebrates. This is Porifera, Coelenterata, Mollusca, Vermes, Echinoderms and Arthropods. The results from analysis data with the survey, based on the validation of linguistic expert (86,4%), validation subject matter experts (483,9 %), validation of media expert (87,8%) the validator eligibility by teachers (84,5%) and the test of the students (86,04%) the result is very good criteria. Based on this percentage , it can be concluded that media biology media based on macromedia flash from the invertebrates inventory on the island of mice it is very appropriate used by teachers and students.

Keywords
Invertebrata, Macromedia Flash, R and D, ADDIE

Topic
Biology Education

Link: https://ifory.id/abstract/qRn4zk8Yu6gj

Corresponding Author
Eni Nuraeni

Institutions
UPI

Abstract
This study aims to obtain information and to analyze the biological - mathematical attitudes of students in quantitative literacy- based ecosystem instruction. The research used a quasi-experimental design with 131 six grade students in two high school.. The Biological - mathematical attitude was obtained with the Math-Biology Values Instrument (MBVI) questionnaire and quantitative literacy was asses with multiple choice questions. The results shows that majority of students feel interested, feel the benefits and feel the importance of mathematical abilities in solving biological problems, and almost all students do not feel difficulties with mathematics in ecosystems instruction. Student very high interpretation and calculation abilities as well as high representation and analysis skills.

Keywords
MBVI, biological-mathematical attitude, quantitative literacy, ecosystem

Topic
Biology Education

Link: https://ifory.id/abstract/LZDP7ek3mWMC

Corresponding Author
Muhammad Alimahdi

Institutions
Indonesia University Of Education

Abstract
This didactic redesign apply strategy reading infusion (SRI) and using Marzano-s Learning Dimension (MLD) is based on student responses to literacy scientific competencies (LS) which is indicate that students still weak related to aspects of evaluate and design (K2) and interpreting data and scientific evidence (K3) on sound wave chapter. To train this competence learning develop experimental topic that is contextual like experiment of analyzing sound wave damping material, determine standard tuning on the guitar, and calculate velocity of sound wave with doppler effect through the use of smartphones, the experiments that were presented is designed to facilitate scientific literacy competence and reading infusion is used to insert knowledge so that the students have enough knowledge, this is as able to develop attitudes and positive perspectives and productive thought process during knowledge formation, refinement of knowledge and application of knowledge.

Keywords
Literacy scientific competence, Marzano,s learning dimension, and reading infusion

Topic
Physics Education

Link: https://ifory.id/abstract/r9RpFwQHvZ3K

Corresponding Author
Khaeruddin Khaeruddin

Institutions
a) Department of Physics Education, Faculty of Math. and Natural Science, Universitas Negeri Makassar, Indonesia

Abstract
The Indonesian curriculum explicitly states that critical thinking skills as Higher Order Thinking Skills (HOTS) and future competencies must be taught to students to answer the challenges of globalization and be able to adapt to changes and respond to the demands of the 21st century. Therefore, this paper explains the development and validation of instruments of critical thinking skills to assess the ability to interpret, the ability to analyze and the ability to infer students. Specifically, critical thinking skills tests are designed based on the basic competencies of senior high school physics subjects in the form of essays that are equipped with an assessment rubric. Evidence of content validity, construct validity, and reliability is presented as the reliability of the critical thinking test instrument.

Keywords
Critical thinking skills, instrument development, validation.

Topic
Physics Education

Link: https://ifory.id/abstract/YupL8j2CzGZt

Corresponding Author
Enjun Junaeti

Institutions
Universitas Pendidikan Indonesia

Abstract
Efficiency, enhancement, and transformation are identified as potential advantages in the use of technology in enhancing learning and teaching, so this has become an attraction for researchers to continue to develop technology enhance learning (TEL). Nevertheless, the issues in related to types of technology intervention, ways of conceived enhancement, and associative evidence require further deep thought so that TEL does not become a tool to substitute the existing pattern of teaching and learning. This study aims to implement the concept of the snakes and ladders game in the design of multimedia-based learning as a TEL that meets the didactic requirements. As an evaluation of meeting the requirements, the design is implemented in the development of multimedia about linear space created by following the ADDIE framework and used in the learning process in the classroom. Based on the results of the study, it was found that the multimedia developed had fulfilled the didactic requirements, namely: to have the opportunity to develop fundamental knowledge, to integrate theory into practice, and to develop critical thinking skills.

Keywords
snakes and ladders game; TEL design; didactic requirement

Topic
Computer Science Education

Link: https://ifory.id/abstract/rpL2R9vMmYWP

Corresponding Author
Utiya Azizah

Institutions
Chemistry Department
Universitas Negeri Surabaya
Surabaya, Indonesia

Abstract
The learning process must be based on the aim to facilitate the formation of college students metacognitive skills so that the learning process for conceptual change can occur. The aim of the study was describing the validation of Problem-Solving based teaching materials for the exploration of conceptual change and metacognitive skills theoretically and empirically. Research and Development (R & D) design was utilized in the research method. This study involved three experts for theoretical validation and 31 college students for empirical validation. The instrument used for this study was the validation sheet and questionnaire of college students- perception of problem-solving based teaching materials. The research obtained findings: (a) Theoretical validity from the expert has met the valid and very valid include the construct validities categories and the content validities as well as reliable, (b) empirical validity of the college students perception of the teaching materials based problem-solving includes the construct validities and content validities, all of them have valid and very valid categories. From this study, it can be concluded that the Problem-Solving based teaching materials were feasible and suitable for use on the exploration of conceptual change and metacognitive skills.

Keywords
validity, teaching materials, problem-solving exploration conceptual change, metacognitive skills

Topic
Chemistry Education

Link: https://ifory.id/abstract/qzQvMCdjuThD

Corresponding Author
Dewi Muliyati

Institutions
Physics Education Department, Universitas Negeri Jakarta

Abstract
This study aims to produce a physics textbook enriched Augmented Reality. The book that has been produced can be used as a technology-based source of learning for high school students 10th grade 1st semester. The book is presented in multi-representation in the form of pictures, tables, graphics, exposure, sample problems, 3D animation, and video. 3D animations or videos are displayed through Augmented Reality application with android operating system. The research was conducted by research and development method of Dick and Carey model. Instruments used in the form of Likert scale questionnaire. The research data were obtained from material experts, media experts, physics teachers, and high school students 10th grade then analyzed using a Likert scale and gain test. The results of validation by material experts get a value of 88,16% for the nature of physics and measurement; 94,06% for vectors; 94,96% for linear motion kinematics; 88,5% for two-dimensional motion (parabolic motion); and 88,76% for circular motion. The results of validation by instructional media expert get a value of 88,17%. User trials by teachers get a value of 92,86% and by students get a value of 90% and an increase in the cognitive abilities of high school students 10th with a value of 0,35. It can be concluded that this physics textbook enriched with augmented reality technology is worthy of being used as a learning source in physics learning.

Keywords
textbook, augmented reality, physics

Topic
Physics Education

Link: https://ifory.id/abstract/dUrpHvLVT2B8

Corresponding Author
Dewi Muliyati

Institutions
Physics Education Department, Universitas Negeri Jakarta

Abstract
Understanding physics concept will be easier if the material can be presented in various forms. Quick Response Code (QR–Code) can provide additional material in the form of videos, PPTs, or website to facilitate the learning of physics concept. The methods used in this study is research development (Research and Development), Dick and Carey model with the following steps: identify instructional goals, conduct instructional analysis, identify entry behaviors and learner characteristics, write performance objectives, develop criterion-referenced test items, develop instructional strategy, develop and select instructional materials, develop and conduct formative evaluation, revise instruction, develop and conduct summative evaluation. This study produced textbooks equipped with QR–Code for 12th-grade physics in the odd semester to display physics the materials enriched with various forms of media making it easier for students to understand the concepts learned.

Keywords
Textbook, Research and Development, QR code, High School Physics

Topic
Physics Education

Link: https://ifory.id/abstract/QrGUDLck37He

Corresponding Author
Dewi Muliyati

Institutions
Physics Education Department, Universitas Negeri Jakarta

Abstract
Physics has some material that is abstract, so it is difficult for students to learn. One of them is the concepts and phenomena of quantum. This research is focused on producing module that is equipped with Augmented Reality technology in AR Quantum application. The module and application developed aim to make it easier for high school students in 12th grade to understand concepts and phenomena of quantum. The research method used is development research method with the Dick and Carey model. The module that is developed applies the Discovery Learning model, consists of six stages. The module is equipped with images as a marker that will display 3D objects if scanned with a camera in the AR Quantum application. This research obtained data through a questionnaire with a Likert scale (points 1-5) and tests (pre-test and post-test). The questionnaire consisted of a feasibility test by expert lecturers in the Physics Education study program at UNJ and a product trial by teachers in SMA Negeri 6 Bekasi and 12th-grade students at SMA Negeri 1 Bekasi. In addition, other data in the form of pre-test and post-test results were tested with a gain test to obtain data on improvement of students- understanding related to the impact of using module. The results of the research obtained product feasibility test data of 95.9% for aspects of Physics material, 84.2% for aspects of instructional media, and 81.5% for aspects of Physics learning. The product trial results by the teacher gained a value of 94.3%, by students get 86.4%, and the results of gain test were 0.213. This shows that module equipped with Augmented Reality can illustrate concepts and phenomena of quantum into reality with excellent quality and are suitable for use as independent learning materials for students.

Keywords
3D modeling, Augmented Reality, Concepts and Phenomena of Quantum, Discovery Learning

Topic
Physics Education

Link: https://ifory.id/abstract/TetBK7ANvGFJ

Corresponding Author
Wardani Rahayu

Institutions
(1*.2) State University of Jakarta, JL. Rawamangun Muka Jakarta Timur 13220 Indonesia

Abstract
The purpose of this study is to find out how the dimensions, aspects, and items of classroom culture instruments. This study was adopted from the interpretive-constructivist paradigm using the quality methodology. Research subjects were 9 experts who were randomly. Instrument modification from WIHIC is with dimensions of teacher support, involvement, investigation, authentic task orientation, cooperation, equity, access, interaction, transformation, and using technology. The results showed that the assessors provided advice and input in examining the appropriateness of the dimensions, items and aspects being assessed. Systematically the preparation of PPG class culture instruments produced 54 items that were declared valid based on expert agreement. Existing statement items met various measurement criteria that can be used to measure the class culture of PPG students in Indonesia. The dimension that needed to be corrected was the authentic task orientation indicator. Almost all experts provided improvement in aspects of language.

Keywords
class culture, expert validity, WIHIC

Topic
Mathematics Education

Link: https://ifory.id/abstract/KXvkzYVUr2MA

Corresponding Author
Renita Novitasari

Institutions
Universitas Pendidikan Indonesia

Abstract
The research is the first research that opens up our Universe from a mobile application called Solar Walk Ads+: Explore Space to improve students- understanding and believe in learning Solar System. Assisting the students in understanding the situation of the Solar System to make the abstract fact clearer and increase the students- believe in performing task. The work has begun to collect the data of students- post-test and pre-test using quasi-experiment design participated by 12 students in 7th grade of a private school in Bandung, West Java. After the data was collected by the implementation of Solar Walk Ads+: Explore Space application with the instruments such as observation sheets, worksheets, questionnaire, and objective test, the data analysed based on three different concepts, the higher improvement shows in the concept of the Solar System-s effect on the phenomenon on the Earth. Meanwhile, the students- believe effect after learning with this application resulted in the better improvement shown for the lower achiever students rather than the higher achiever students. Finally, this research recommends to held research that finds out whether the improvement is better if learning Solar System using Solar Walk Ads +: Explore Space also motivates students to learn.

Keywords
Solar Walk Ads+ , Interactive Media, Students- understanding, Students- believe, Solar System

Topic
Integrated Science Education

Link: https://ifory.id/abstract/TyfPwedmM9av

Corresponding Author
Indah Laelasari Efendi

Institutions
Universitas Pendidikan Indonesia

Abstract
The purpose of this research is to investigate the effect of implementing project-based learning on students- creative disposition, creativity, and understanding in learning light and optics. The method that was used in this research was experimental research. The sample was taken by purposive sampling technique in experimental class (n= 21 students) with the population of 8th grade students at Junior High School in Bandung. The experiment class was given treatment using Project-Based Learning. The result shows that creative disposition appear for 74.95 minutes of the total appearing time of all creative disposition indicators. Then, the result of students- creativity was 69.73% which categorized as good. According to the result of analysis of students- understanding, proves that there is improvement in students score in learning light and optics after the implementation of project-based learning. This result can also be seen by the significant 0.001 which means there was improvement in students; understanding. The recommendation of this research is to try to conduct the research in different topic.

Keywords
Project-Based Learning, Creative Disposition, Students- Creativity, Students- understanding, light and optics

Topic
Integrated Science Education

Link: https://ifory.id/abstract/d7bYEmGwkCvQ

Corresponding Author
Putri Sekar Melati

Institutions
a)Department of Science Education, Universitas Pendidikan Indonesia, Jl.Dr. Setiabudhi No. 229 Bandung 40154, Indonesia.
*putrisekarmelatiimel[at]upi.edu

Abstract
Food and Agriculture Organization of the United Nations (FAO) stated that one third of global food production became food waste. Therefore, food waste issue become worldwide concern that needs concrete and innovative solution combined with latest technology. These facts are the reasons why FAWless (Food Assist Wasteless) is made. This android based application is made to reduce food waste that is produced by society by helping them by distributing their extra food or almost expired food so that it is not wasted. Besides, FAWless is also made in order to put food waste into use. This research use descriptive method. The samples are grouped into four categories which are student, student dormitory, household, and small and medium enterprise .The result shows that samples are able to install and use FAWless application to distribute their extra food. The extra food is categorized into meal, snack, beverages, fruit and vegetable, expired food, fruit and vegetable waste. The samples can also donate money through FAWless for operational cost. Once the sample used FAWless, the food or donation will be picked up and distributed to people in need.

Keywords
Android based application, FAWless, food waste

Topic
Integrated Science Education

Link: https://ifory.id/abstract/rbRMpHnkvf6w

Corresponding Author
Syafruddin Side

Institutions
1Department of Mathematics, Faculty of Mathematics and Natural Sciences,Universitas Negeri Makassar

Abstract
This study discusses the process of the SEIRS model on the spread for Hepatitis B. The mathematical model of the SEIRS for Hapatitis B is a model by dividing the population class into four variables namely Susceptible-Exposed-Infected-Recovered-Suspected (SEIRS) which is a four dimensional nonlinear differential equation system. The model obtained analyzed and simulated using data assuming the initial values ​​of variables and parameters and processed using Maple Software. The simulation results provide predictions of the number of Hepatitis B sufferers who can be a preventative solution. If R0>1 , the hepatitis B disease becomes endemic and if R0>=1, the hepatitis B disease will disappear by itself.

Keywords
Hepatitis B, SEIRS Model, Endemic and free disease

Topic
Mathematics

Link: https://ifory.id/abstract/bhV9MX8umGEq

Corresponding Author
Al Azhary Masta

Institutions
1Department of Mathematics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung 40154, INDONESIA

2Department of Mathematics Education, STKIP Muhammadiyah, Jl. KH. Ahmad Dahlan 51, Kabupaten Bangka Tengah, Bangka Belitung, 33684, INDONESIA

Abstract
In this paper we present sufficient and necessary conditions for generalized Ho ̈lder-s inequality in p summable sequence spaces which complete the Masta, et al. result in 2018. One of the keys to prove our results is to use the norm of the characteristic sequence of the balls in Z^n.

Keywords
Holders inequality, sufficient and necessary conditions, p-summable sequence spaces

Topic
Mathematics

Link: https://ifory.id/abstract/q3GMHPFWLKtz

Corresponding Author
Al Azhary Masta

Institutions
1Department of Mathematics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung 40154, INDONESIA

2Analysis and Geometry Research Group, Bandung Institute of Technology, Bandung, INDONESIA

3Department of Mathematics Education, STKIP Muhammadiyah, Jl. KH. Ahmad Dahlan 51, Kabupaten Bangka Tengah, Bangka Belitung, 33684, INDONESIA

Abstract
In this paper we present a sufficient condition for generalized Ho ̈lder-s inequality in Orlicz sequence spaces. One of the keys to prove our results is to use the norm of the characteristic sequence of the balls in R^n.

Keywords
Ho ̈lders inequality, sufficient and necessary conditions, p-summable sequence spaces

Topic
Mathematics

Link: https://ifory.id/abstract/tQ8f3c64eFhd

Corresponding Author
Gita Sukmawati

Institutions
Universitas Pendidikan Indonesia

Abstract
Indonesia is situated in geologically unstable area called the Pacific Ring of Fire which faces the risk of powerful earthquakes with potentially devastating effects. The most effective measure to be taken against earthquake and other natural disasters are knowing what to do when it happens. This issue intended the researcher to build a mobile learning application for earthquake mitigation using game-engine software called Unity 2D. Generally, the process of developing the mobile learning application consist of several steps: (1) preparation stage which consist of problem identification and formulating objectives, literature review, and constructing the instrument; (2) development stage also consist of several stages which are making the flowchart, storyboard, software necessity analysis, hardware necessity analysis, and coding. The method that used in this research was descriptive. The subject was 30 students of Laboratorium Junior High School in Bandung and one science teacher. The experts on content, language and artwork were evaluated the mobile learning application. The result of the experts- judgment content scored 83.33%, 87.5% on language content and reached 93.75% on artwork (IT) aspect. The overall result of mobile learning application for earthquake mitigation is adequately received a good evaluation from every aspect.

Keywords
Earthquake, Android, Mobile learning

Topic
Integrated Science Education

Link: https://ifory.id/abstract/a9uMLp2bWGjD

Corresponding Author
Nasrullah Pemu

Institutions
a) Universitas Negeri Makassar
b) STKIP YPUP Makassar

Abstract
Developing creativity and increasing student performance in learning activities is essential but is not easy to implement. For this reason, through the use of Geogebra, Maple, and Schoology (GeoMaSchool) in further calculus lectures, students are expected to be able to show their best creativity and performance. With design research carried out in stages, namely preparation for experiments, conducting experiments in classrooms, and conducting retrospective analyzes. This research activity designs learning that involves Geogebra and maple devices and structured learning material in the Schoology learning management system. The subjects in this study were 32 students of mathematics education who programed Advanced Calculus courses. The results showed that with the knowledge and mastery of Geogebra or Maple devices, students build their calculus knowledge creatively. Then, Schoology recorded students performance and the learning progress authentically.

Keywords
GeoMaSchool, Creativity, Performance, Higher Education

Topic
Mathematics Education

Link: https://ifory.id/abstract/4xYT8jCfvmcb

Corresponding Author
Nurjanah Nurjanah

Institutions
Universitas Pendidikan Indonesia

Abstract
Mathematical objects that are abstract in nature are their own difficulties for students in learning mathematics. Learning hands-on activity media an approach that involves direct activities and experiences students in manipulating objects to gain knowledge and understanding. The purpose of this study is to analyse the effect of learning hands-on activity media on the mathematical reasoning ability.The purpose of this study is to analyze the effect of learning hands-on activity media on the mathematical reasoning ability of junior high school students. The approach of this research is quantitative by using the quasi-experimental method. The research design is pretest-posttest with experimental and control class. The subjects of this study were seventth-grade students of the junior high schools in three schools in Bandung, totaling 278 people. The research data was obtained using a mathematical reasoning ability test. The results of study show that; the reasoning ability of students who get hands-on activity media learning is better than students who get conventional learning.

Keywords
Learning Hands-on Activity Media, Mathematical Reasoning Ability

Topic
Mathematics Education

Link: https://ifory.id/abstract/RQqcAWZNDLJ7

Corresponding Author
Ahmad Yani

Institutions
Universitas Negeri Makassar

Abstract
This study is a pre-experiment which aims to describe psychomotor abilities in practicum activities. The study subjects were 27 students at X IPA 2 Grade, SMA Negeri 7 Wajo. This research was conducted in 2018/2019 academic year. The study datas were gathered by non-test observation sheet. The study results showed that the highest experiment psychomotor abilities indicator is using experiment instruments and matterials skill at 86,53 %. The following ability is analyzing and designing experiment at 85,41 %. The lowest ability is interpreting and presenting experiment result at 82,7 %. Those abilities are in very good criteria based on Suhertian-s psychomotor skills category (2010)

Keywords
Practical Activities, Psychomotor Abilities, Observation Sheets

Topic
Physics Education

Link: https://ifory.id/abstract/GpakRHyq2CW6

Corresponding Author
Eksa Nursafira Sunarya

Institutions
Universitas Pendidikan Indonesia

Abstract
Technological developments in this era are experiencing rapid progress. Especially in the field of science, everyone refers to education that will trend in the 21st century. Where education will become very modern with the help of many technologies to support student learning. The android-based application is nowdays used in order to engage students- understanding of science learning. In this work, we will propose a android learning application, named “E-Layer”, as interactive multimedia for learning science. This application discusses physical material on the topic of the earth layer. This application is made using Unity software. Unity is software that can make applications for games or learning applications in two dimensions or three dimensions that are packaged in an interactive multimedia display. Researchers have evaluated this device. The results showed that based on content expert evaluations, the average mobile learning score was 96%, language evaluation based on experts was 82.50%, and media design (IT) rated an average of 87.93% from the range 88 , 81%. As well as based reviews from science teachers and junior high school students the percentage of mobile learning applications is 90.55% and 92.50. Based on this, the Android mobile application is very suitable for use as a learning application. This application is dynamically designed and equipped with various supporting features, such as: images, videos, sounds, multi-language animation settings, and so on. The author suggests that this application can continue to be developed in future studies.

Keywords
E-Layer, Unity, Android Mobile Application, Interactive Multimedia

Topic
Integrated Science Education

Link: https://ifory.id/abstract/QyGgnYHPecp8

Corresponding Author
Andi Mu-nisa

Institutions
a) Departement od Biology, Universitas Negeri Makassar, Makassar,
b) Faculty of pharmacy, Universitas Muslim Indonesia, Makassar,

Abstract
The present investigation was carried out to characterize the bioactive compounds present in extract of Thelenota ananas using Gas Chromatography-Mass Spectrum (GC-MS). The results of the GC-MS analysis provide different peaks determining the presence of 10 phytochemical compounds with different therapeutic activities. The major hexadecanoic acid, ethyl ester (55.47), [1,1&

Keywords
GC-MS, Thelenota ananas, sea cucumber, Selayar Island

Topic
Biology

Link: https://ifory.id/abstract/LcF76dWRbhVJ

Corresponding Author
Eka Cahya Prima

Institutions
Universitas Pendidikan Indonesia

Abstract
Modern learning using technology demands students to be have awareness in the use of technology on their daily life. As the answer to the problem, the concept of a traditional learning approach should be changed into a learning approach that integrates students- knowledge, performance, and skills. STEM learning is one of innovational approach that integrates students knowledge, skills, and performance towards technology and engineering design. This research aims to investigate the effect of STEM learning on students- science, technology, engineering, and mathematics (STEM) literacy in learning electricity concept. The method which used in this research was Weak Experimental method. The sample was taken randomly (n=16 students) of Private school in Bogor. The quantitative data of this research is gained through objective test, while the qualitative data was gained by observation sheet. According to the analysis of the research, it is obtained an improvement on students- STEM literacy, especially in technology, engineering, and mathematics literacy while students- scientific literacy shows negative improvement. The improvement of students- science, technology, engineering, and mathematics literacy obtained through normalized gain systematically by 0.22, 0.12, 0.03,and -0.02 categorized as low improvement. Even though students cannot relate the scientific concept occurs during the experiment, students are excited to conduct the project using Arduino-Protoboard experiment since they had an experience to use the lastest kind of technology.

Keywords
STEM Learning, STEM Literacy, Arduino, Protoboard experiment, Electricity

Topic
Integrated Science Education

Link: https://ifory.id/abstract/HVGc32tTZqwm

Corresponding Author
Ignasia Yunita Sari

Institutions
STIKES Bethesda Yakkum Yogyakarta

Abstract
Background: The digital era is developing fast and rapidly along with the development of gadget. Gadget becomes very popular including for preschoolers. Inappropriate gadget usage interferes with the childs growth process. Objective: This study aims to identify the relationship between duration of gadget usage and social interaction in preschool children in Terban, the working area of Puskesmas Gondokusuman II in 2018. Method: This was a correlational analytic survey with case control method. Data gathering was done in Terban sub-district on August 2018. The sampling technique used was cluster random sampling with 74 respondents. Result: The result of statistical test shows p value of 0.025 (which means there is a difference in the proportion of social interaction between children who rarely use gadget and children who often use gadget. The result analysis also shows OR = 4.469. It means children who rarely use gadget have the opportunity of 4,469 times to have good social interaction. Conclusion and Recommendation: There is a significant relationship between duration of using gadget and social interaction. Children who rarely use gadget have 4,469 chances to have good social interaction. Further research regarding factors related to the use of gadget in preschool children is recommended.

Keywords
gadget, interaction, social interaction, preschool

Topic
Community and Occupational Health

Link: https://ifory.id/abstract/aQzMExmkJU6b

Corresponding Author
Al Azhary Masta

Institutions
1,3 Department of Mathematics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung 40154, INDONESIA

2 Raudhatul Jannah Sunior High School, Residence Grand Cilegon, Banten 42426, INDONESIA

4 Department of Mathematics Education, University of Georgia, Athens, United State of America

Abstract
Morrey spaces is a generalization of Lebesgues spaces. There are two type of Morrey spaces, i.e continous Morrey spaces and discrete Morrey spaces. In this paper we present sufficient and necessary conditions for Ho ̈lder-s inequality in discrete Morrey spaces. One of the keys to prove our results is to use the norm of the characteristic sequence of the balls in Z^n.

Keywords
Ho ̈lders inequality, sufficient and necessary conditions, discrete Morrey spaces

Topic
Mathematics

Link: https://ifory.id/abstract/BF2YfCZgDkHG

Corresponding Author
Ambar Hardjanti

Institutions
1Fakultas Kedokteran Universitas YARSI
2Fakultas Kedokteran Universitas Indonesia,Jakarta

Abstract
Introduction: Dengue Haemorrhagic Fever is a public health problem in Indonesia. The nation capital Jakarta has the most cases compared to other provinces. Rawasari District was declared an endemic area for Dengue Haemorrhagic Fever (DHF). Eradication of DHF centred on vector (Ae. aegypti) control. Organophosphate is the insecticide of choice for over 25 years of vector control effort. Insect resistance to organophosphate is marked by an increase of non-specific esterase enzyme activity that can be detected using microplate assay. Method: This study collects Ae.aegypti and larvae randomly from houses in the research area and conduct alfa esterase activity assay using microplate reader. Briefly, larvae homogenate placed inside ice cooled microplate wells. The prepared reagent used to assessed esterase activity from each homogenate and evaluated using spectrophotometer at 450 nm. Sampling locations were determined geographically using Google Earth. Results: Organophosphate resistance pattern from Rawasari district area shows a 22.4% high resistance, 41.1% moderate resistance and 36.4% larvae still sensitive to organophosphate. Discussion: Resistance pattern shows in this study was similar to other study conducted in the greater Jakarta area. However, a large proportion of the vector has moderate resistance, which warrants a vector resistance surveillance program. Vector control program conducted at Rawasari district can still use organophosphate to eliminate DHF vector.

Keywords
Ae.aegypti, Resistance, Organophosphate, Enzym, Vector

Topic
Basic and Clinical Medical Sciences

Link: https://ifory.id/abstract/gKR9AJZwtHDU

Corresponding Author
Rosiqoh R

Institutions
Universitas Pendidikan Indonesia

Abstract
This study aims to determined the ability of mastery of concepts with a scientific approach to class X students on the material momentum and impulses. This research is a single case study case study where the purpose of the study is to examined the conditions and situations that are happening, thus providing a picture based on the facts found in the field. The design of this study was post-only group design with a sample of high school grade X students in one school in Bandung. Data analysis techniques using Rasch models and instruments used in this study were multiple choice tests and student worksheets (LKPD). The results showed that the low ability to master the concepts of students in each aspect with the percentage in the aspects of understanding (65.3%) and (57.6%), the fourth and sixth are aspects of applying (61.5%) and (53.8%) ), and fifth is the aspect of analyzing (42.3%).

Keywords
mastery of concepts, scientific approach

Topic
Physics Education

Link: https://ifory.id/abstract/PJDH34Kcuf72

Corresponding Author
Suratno Suratno

Institutions
State Polytechnic of Jember

Abstract
As a raw material for the food industry, spinach quality standards are considered both physical and chemical quality, including the nitrate contains. Nitrates that are consumed by humans will be very dangerous because can cause methaemoglobinemia. The nitrate content in spinach comes from the chemical nitrogen fertilizer used, while Azolla compost contains a lot of nitrogen, so the use of Azolla compost can replace nitrogen fertilizer and reduce the nitrate content of spinach. This study aims to determine the effect of Azolla liquid organic fertilizer concentration and nitrogen fertilizer on the growth, yield and quality of spinach, in order to obtain high quality spinach production both physically and chemically. The research used factorial randomized block design, Factor I: Azolla Liquid Organic Fertilizer (LOF) consisting of: A0 = No LOF, A1 = LOF 10 m/liter, A2 = LOF 20 ml/liter. Factor II: Urea fertilizer dosage of: U1 = Urea 50 kg/ha, U2 = Urea 100 kg/ha, U3 = Urea 150 kg/ha, U4 = Urea 200 kg/ha. The parameters observed were: 1) Plant height, 2) Number of leaves, 3) wet weight, 4) dry weight, 5) Plant weight, 6) Soil Analysis, 7) Analysis of Nitrate, 8) Analysis of Protein

Keywords
Azolla, nitrogen, nitrate, quality, spinach.

Topic
Organic Agriculture

Link: https://ifory.id/abstract/mFjzfCU7gwbc