Indonesia Conference Directory

Corresponding Author
Adi Rachmanto

Institutions
Universitas Komputer Indonesia

Abstract
The purpose of this study is to design and implement a village website. Research conducted using the waterfall method and using data collection techniques in the form of interviews, observation, and literature. To facilitate the construction of a website, developing a village website uses Content Management Systems (CMS) from WordPress.org because it provides a standard template. The village website is built with several dynamic data in the form of: Home, Village Profile, News, Articles, Featured Products and others. The information contained on the website can be monitored easily, so that the information is information that is the last update. The impact of the construction of this village website is to make it easier for users to access all information related to the village and make it easier for the village to promote the superior products produced by the residents of their village.

Keywords
village website, design of information systems, superior village products

Topic
Government Science

Link: https://ifory.id/abstract/YVdJtqXL8CeW

Corresponding Author
Naniek Afrilla Framanik

Institutions
Sultan Ageng Tirtayasa University,

Abstract
This study focuses on the traditional communication model of traditional leaders in the indigenous tribe Kasepuhan Cisungsang, namely an indigenous tribal community, in Banten Province, the westernmost part of the island of Java in Indonesia. The Kasepuhan Cisungsang indigenous tribe has existed since the 13th century. The presence of modern culture also changes the values of life adopted in the Cisungsang tribe. There is concern among indigenous leaders, that the values they believe in from generation to generation will change and even be damaged by changing times. This study focused on three objectives, namely: (1) finding traditional communication models in maintaining local wisdom in the Cisungsang tribe, (2) finding the self-concept of indigenous leaders in terms of: the rights and obligations of indigenous leaders to make decisions for themselves and their environment . (3) Finding patterns of support for indigenous peoples, in terms of their attitude of religiosity and democratic attitude. This research is based on pragmatisms philosophical roots, uses cultural social traditions, symbolic interactionism theory (mind, self and society) -Herbert Mead, constructivist paradigm, qualitative-exploratory research approaches, and ethnometodology methods. The level of data validity is based on credibility, transferability, dependability, and confirmability. The results of this study are, (1) traditional leaders carry out traditional communication in the form vertical communication methods, which are carried out from indigenous peoples to traditional leaders, called reporting (nyarita). The second traditional communication method is horizontal communication, namely communication between traditional leaders, called discussion (adu renyom). (2) The next stage is to the self-concept of traditional leaders. Traditional leaders carry out their duty to maintain cosmic order. Customary leaders in carrying out their roles have competence. They are creative, wise, responsible, alert, ready, understanding, intelligent, skilled, agile, caring, fast, responsive and the ability to maintain self-esteem. Traditional leaders have the ability to place themselves, can absorb social values. This ability is achieved by meditating and maintaining the sanctity of behavior. The self-concept of traditional leaders has a tendency to the aspects of "the Me" and not on "the I". (3) Indigenous peoples support for local wisdom in Kasepuhan Cisungsang is to maintain and carry out religious ritual activities and trust in Sri Devi. They respect and loyal to the traditional leader. From the aspect of the attitude of democracy, if they marry outside people, then the traditional leader allows them. After marrying and moving home, they are not given the obligation to follow customary regulations. Keywords: traditional leaders, discussion (adu renyom), reporting (nyarita), content (eusi), container (wadah), indigenous communities.

Keywords
traditional leaders, discussion (adu renyom), reporting (nyarita), content (eusi), container (wadah), indigenous communities.

Topic
Education and Social Change

Link: https://ifory.id/abstract/cQqBr69Cvxu4

Corresponding Author
Deni Ramdani

Institutions
STIA-LAN Bandung

Abstract
As a result of recent political dynamic, particularly after the world most complicated simultaneous national elections, Aceh referendum discourse has been echoed by Acehnese local elite. This issue has become an interesting phenomenon to be investigated as Aceh has been granted by the central government by way of a special autonomy scheme to run its government. Is it true that the local Acehnese really want the referendum? Or is it just a discourse enacted by the local elite? The current referendum issue raised by the Acehnese local elite seems to be based on the disappointment of the result of national democratic contestation rather than military oppression and prolong economic resources appropriation by the central government as experienced by the 1999 former referendum. This paper traces the dynamic wave of asymmetric decentralisation in line with the dynamic of the Aceh local politics. First, in the 1956 Formation of Aceh Special Autonomy Province. Second, the Iimplementation of the 1999 law on Aceh Province as a Special Region. Third, the 2001 law on Special Autonomy for Aceh as Nanggroe Aceh Darussalam and the last wave on the birth of the 2006 Aceh Special Autonomy as a result of the MOU Helsinki conflict resolution signed by the Aceh Free Movement and the Indonesia Government. For sure the new wave of this local political dynamic has been ongoing as the dynamic of asymmetric decentralisation which gives a new space for the politics of bargaining position of the Jakarta national elites.

Keywords
Referendum, Assymetric Decentralisation, and Local Democracy

Topic
Local Politics and Decentralization

Link: https://ifory.id/abstract/28znLFb4XKGq

Corresponding Author
Nurprapti Wahyu Widyastuti

Institutions
Sultan Ageng Tirtayasa University

Abstract
The success of the 212 action on 02 December 2016 took place peacefully with the mobilization of millions of Muslims from Indonesia. This action contains a dhikr, speeches from ulama leaders, and closes with Friday prayers at the Monas field, Jakarta. The action requires the Governor of DKI Jakarta to resign from his position. Governor Basuki Tjahaja Purnama (Ahok) is considered to have insulted Muslim because of his statement for a number of people in the Thousand Islands in September 2016 by quoting a verse from the Quran namely Surah Al Maidah verse 51. This is phenomenal event because it was related to the governors turnover period, where Ahok was one of the strong candidates. Ethnic Chinese are a minority but control the Indonesian economy. Ethnic China which has never occupied a strategic position in government has become an issue laden with conflicts of interest. The majority of Muslims do not want political domination by ethnic Chinese and the alignment of the ruling regime and tend to be authoritarian. The act of defending Islam 212 was ultimately a political movement of the majority of Muslims against the domination of the dictators of the ruling regime. After the success of the action 212 which was full of brotherhood and togetherness gave rise to the spirit of unity of Islamic in Indonesia. The emergence of various activities in various fields to maintain the spirit of brotherhood among fellow Islamic is one of the most prominent in the economic field. Now, muslim in Indonesia develop a forum for economic struggle to achieve economic independence of the people. This study aims to see how the act of defending Islam 212 is a trigger for Islamic political and economic resurrection in Indonesia. The study was conducted using the Habermas critical method, where researchers see the power relations in political communication and social structures.

Keywords
Action to defend Islam 212, the rise of Indonesian politics and economy, Islamic politics, Islamic economics

Topic
Conflict and Reconciliation

Link: https://ifory.id/abstract/8yun3ErzfCdQ

Corresponding Author
Suyadi .

Institutions
Lembaga Ilmu Pengetahuan Indonesia

Abstract
Weda Bay is one of mega-biodiversity spots in Indonesia, for example it is one of the largest mangrove habitat in North Maluku. However, data and information of mangrove vegetation and its ecosystem services particularly carbon stocks are lacking. Mangroves were sampled using transects in five sites of mangroves across Weda Bay. The transects extended from seaward to landward to cover all vegetation variation. Environmental data (water and substrate) were collected using Conductivity Temperature and Depth (CTD), Dissolved Oxygen (DO) meter, and sediment core. The objective is to identify characteristics of mangrove vegetation, environment, and it ecosystem services in term of aboveground carbon stocks. The study found 17 species of mangrove and the dominant species was Rhizophora apiculata, followed by Bruguiera gymnorrhiza. The importance index of those species were high (Importance index > 45) in the four sites (Yevi, Imam, Halmahera, and Bori-Bori), but Rhizophora Stylosa was important species in Dadawe site (Importance index: 58). The density of mangrove tree was 987 stem ha-1 and sapling was 1,470 stem ha-1. Substrate of mangrove did not vary significantly with distance from the seaward which mainly dominated by mud and clay (3.9 - 63 µm). Mean water temperature in the mangrove area was 29.3℃, salinity 34.1 psu, mean water suspension was 46 mg l-1, mean dissolved oxygen was 3.2 mg l-1, and water current was 10 m s-1. Aboveground carbon stocks were considerable (mean 154 Mg C ha-1, maximum 425 Mg C ha-1). Change in aboveground carbon stocks over the distance from the seaward edge to landward edge was not significantly different. The study also observed mangrove deforestation, exploitation (fire wood), and plastic pollution in all study sites. These data indicate that the environment (water and substrate) of Weda Bay is suitable for mangroves. However, this ecosystem faced some threats such as mangrove deforestation, wood exploitation, and pollution. It can be estimate that mangrove deforestation generates emissions up to 1,546,599 Mg CO2e ha-1 or equivalent with the loss of carbon market price up to US$ 108 million ha-1. These values exclude belowground carbon stocks and other function and services of mangroves. Better mangrove management e.g. reducing deforestation and pollution are required to protect the functions and ecosystem services of mangroves.

Keywords
mangrove vegetation, mangrove environment, carbon stocks, Weda Bay

Topic
Coastal and Ocean Dynamics

Link: https://ifory.id/abstract/k3MCc9UWxN82

Corresponding Author
Lunde Ardhenta

Institutions
a) Department of Electrical Engineering, Brawijaya University, MT Haryono 167 Rd, Malang 65145, Indonesia
* lunde.ardhenta[at]ub.ac.id

Abstract
DC converters are an important part of DC systems such as hybrid (PV and wind turbine) system. Buck DC/DC converter one of this converter is the main control in DC voltage regulator. The desired performance of this DC converter is following the reference voltage and having a fast response. This paper designs controllers based on the principle of backstepping control to operate a DC converter. Modification to adaptive backstepping is promised to improve the response generated by conventional backstepping. The using of a DC motor as a load make the control system has the aim to stabilize the DC bus voltage and DC motor speed. The effectiveness of the proposed control is verified by simulation. The PID controller is utilized for comparing with the proposed controller. The performance produced by the proposed controller has a simple design and good response.

Keywords
Buck DC/DC converter, DC motor, adaptive backstepping, fuzzy logic, PI controller

Topic
Renewable Energy

Link: https://ifory.id/abstract/nfFR3m9TJpwZ

Corresponding Author
Arrizal Haris Fajariawan

Institutions
a) Department of Engineering, Universitas Negeri Malang
Jalan Semarang 5, Malang 65145, Indonesia
b) Centre of Advanced Materials for Renewable Energy
*aripriharta.ft[at]um.ac.id

Abstract
This paper presents the results analysis of switchings effect when capacitor bank operation against the amount of inrush current on the circuit breaker. Switching of capacitor bank causes inrush current and high frequency oscillation if there are two or more capacitor banks connected in the same bus. When it occurs repeatedly, the insulation from the electric equipment will weaken and breakdown. For this reason, we propose a method to reduce the inrush current using new controlled switching. Switching control is used to find time (t) of circuit breakers switching in each phase so that it can be seen configuration of capacitor banks switching that cause minimal inrush current. We have done a case study, there were 3 capacitor bank with capacity of 25 MVAR, 25 MVAR and 50 MVAR using simulink. Variables used include inrush current (ii), inrush current frequency (fi), controlled switching time (t) and damping reactor (Lreactor). The results of trial calculation on back to back of 3 capacitors cause inrush current is 202,1 kA and inrush current frequency is 85667,5 Hz. After insertion damping reactor, inrush current value is known to be 481,2 A and 204 Hz. By using this switching control method, we know that inrush current occurs almost close to zero ampere so it does not cause oscillations in the system.

Keywords
Capacitor bank, Inrush Current, Circuit Breaker, Switching control

Topic
Renewable Energy

Link: https://ifory.id/abstract/XJCH8kxPMN6K

Corresponding Author
Ade Faridah

Institutions
a) Mahasiswa Pascasarjana Pendidikan Biologi, Universitas Pendidikan Indonesia Jl. Dr. Setiabudi no. 229, Bandung 40154, Indonesia.
*adefaridah[at]upi.edu
b) Pendidikan biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no. 229, Bandung 40154, Indonesia.

Abstract
The Baduy have a set of customary rules (pikukuh) and habits that are passed on to their offspring through oral language that can fade over the times. Important local wisdom is introduced to students as part of the learning process because it is close to everyday life, one of them through teaching materials. Therefore, the purpose of this research is to analyze the values of the local wisdom of the Baduy tribe to develop biology teaching materials in class X (ten) of High Schools. Data collection by means of interviews, field observations and documentation is analyzed descriptively. The primary data in this study is the Pikukuh tribe in environmental management. The results showed there were eight pikukuh in environmental management that could be appointed to develop teaching materials. Pikukuh contains local wisdom values including conservation values, sustainability values, balance values of environmental care values, politeness values, discipline values, and cultural values. These values can be internalized into biology teaching materials in one of the basic competencies in class X of Senior High School, namely analyzing information/ data from various sources about the ecosystem and all interactions that take place in it and simulating interactions between components in an ecosystem.

Keywords
Local wisdom values; Pikukuh; Teaching material

Topic
Biology Education

Link: https://ifory.id/abstract/w629xPQu3z7d

Corresponding Author
Putu Hari Sudewa

Institutions
Pascasarjana Universitas Negeri Surabaya, Program Studi Pendidikan Sains

Abstract
This study is a part of a design research to develop a set of learning materials using inquiry model and PhET Media to enhance junior high school students- science process skills. The need assessment is aimed to give preliminary understanding towards by considering the curriculum, learning theory, challenge and needs in the future. The data is gathered by using observation, interview and documentation methods. Descriptive analysis had been chosen as the data analyze method. The result showed the following facts. First, the implementation of Curriculum 2013 with inquiry learning model and supported by PheT Media is needed to improve the students- science process skills. Second, the students need to have competencies in affective learning outcome, psychomotor skills, cognitive product and cognitive process skills and to enhance their overall optimum competency. Third, the set of learning materials needed ate including syllabus, lesson plan, students- book, students- worksheet and assessment sheet in density and buoyancy topic for the eight-grade junior high school students of SMP Lab Undiksha Singaraja

Keywords
need assessment, inquiry model, science process skills

Topic
Science Education

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

Corresponding Author
Noky Rendy Kapelle

Institutions
Pascasarjana Universitas Negeri Surabaya, Program Studi Pendidikan Sains

Abstract
The purpose of this research is to produce physic learning device regarding to the material of dynamic electricity by using problem based learning (PBL) assisted by PhET in guiding critical thinking skill of junior high school students. The objective details are generating the validity of learning tools developed through PBL model as well as teaching materials for students and student activity sheets, resulting the practice of instructional tools developed through PBL model, analyzing and describing the effectiveness of learning tools developed through PBL assisted by PhET reviewed by students- critical thinking skill after the application of PBL model assisted by PhET to strengthen students- critical thinking skill. Research and Development is a type of research used with 4D as the model and one group pretest posttest design. Data collection in this research is by using validation, questionnaire, test, and observation while the technique of data analysis is using quantitative descriptive analysis. The instruments developed are lesson plans, student worksheets, critical thinking skills tests and PhET simulation media for experiments. The final result in this result is to bring on a valid, practical and effective learning instrument in order to drill students- critical thinking skill on the subject of dynamic electricity.

Keywords
Problem Based Learning, Critical Thinking Skill

Topic
Science Education

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

Corresponding Author
Diah Mulhayatiah

Institutions
Universitas Pendidikan Indonesia

Abstract
The use of teaching materials based on smartphones (smart book) today is a daily reality in the lives of learners and will develop further in the future, so that sooner or later it will grow into a generally accepted learning tool. The purpose of this study was to find out the analysis of the needs and perceptions of teachers towards training in improving pedagogic competence and professional teachers. The research method used is a qualitative method by conducting interviews, observations, and giving questionnaires to 60 physics teachers in West Java. The results of research on needs analysis show that physics teachers need teaching materials that are easily accessible wherever and whenever for learning activities. The physics teachers perception also shows that physics teachers prefer training that is practical and uses teaching materials that can be used anytime and anywhere. This shows that an smart book based android can be used to improve pedagogic and professional physics teacher competencies.

Keywords
pedagogical, professional, smart book

Topic
Physics Education

Link: https://ifory.id/abstract/JRnFCkvwBWb4

Corresponding Author
ABDURRAHMAN FUADY

Institutions
1Program Studi Magister Pendidikan Kimia, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*abdurrahman_fuady[at]upi.edu

2,2 Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The purpose of this research is to analyze the cognitive competence of grade XI students in learning acid-base titration topic through a Project- Based Learning. This research is conducted in a private high school located in the West of Bandung. The participants consist of 33 grade XI students, 2 Chemistry teachers, and 2 supervisors that are knowledgeable in terms of the Project- based-Learning model. A tool that is used in this research is a written multiple-choice test that has been validated by an advanced professor. Moreover, this research is based on Greivemeijer method as well as Cobb Design- Based Research (DBR) that is made up of 3 phases including: Design initiation, Experiment Design, and Retrospective Analysis. The increase of cognitive competence is calculated using N- gain. Results of the data analysis based on the pre test and post test of the grade XI students from the said private high school regarding the acid and base titration topic, reflects that the Project-Based Learning model allowed an increase in cognitive competence of the students. Students of medium category have an N- gain average of (49,68 %).

Keywords
Cognitive competence, Acid-base titration, Project-based learning

Topic
Chemistry Education

Link: https://ifory.id/abstract/y6wnM2rHPCmj

Corresponding Author
M Fazar Nurhadi

Institutions
a) Department of Chemistry Education, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta 13220, Indonesia
*maria.paristiowati[at]unj.ac.id
b)Magister of Chemistry Education, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta 13220, Indonesia

Abstract
Abstract. This study aims to analyze the profile of technological pedagogical and content knowledge (TPACK) abilities of prospective chemistry teachers in the practice of teaching skills in schools through lesson study activities. The study was conducted at the Chemistry Education Study Program, Jakarta State University and school in Jakarta. The method used in this study was a qualitative descriptive research method. The stages of the study are in accordance with the modified lesson study stages, namely training in the preparation of lesson plan that links the suitability of the TPACK components, observes the learning process and reflects. Data collection techniques through TPACK questionnaire, lesson plan assessment, observation of the learning process, and reflective prospective teacher journals. The data of the research results were analyzed according to TPACK criteria. The results of the observation show that prospective chemistry teachers can make or use videos, interactive power points in learning chemical equilibrium and acid-base material. Varying methods such as demonstrations, discussions, games in the delivery of material and evaluating through games. The results of the study concluded that the TPACK ability of prospective chemistry teachers developed during the learning process from the category of PN-Perception level to the category of CN-Conception level.

Keywords
Technological pedagogical and content knowledge, prospective chemistry teacher, lesson study

Topic
Chemistry Education

Link: https://ifory.id/abstract/8pavZGrHtUBR

Corresponding Author
Triana Siska Dewi

Institutions
Universitas Pendidikan Indonesia, Bandung, Indonesia

Abstract
Character education is recommended to be integrated in all school subjects as an effort to solve the problem of moral degradation among the Indonesian students. Therefore, this study aims to explore the character education contents in the physics textbooks used by the teachers in the learning process. The findings demonstrated that there were 14 character values contained in the textbooks, which have had recommendations from the Ministry of National Education of Indonesia as the feasible learning sources.

Keywords
character education, Newton-s law, physics

Topic
Physics Education

Link: https://ifory.id/abstract/JtkdHWyXv84C

Corresponding Author
Isra Mardia

Institutions
Departemen Pendidikan Matematika, Sekolah Pascasarjana,
Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No.229, Bandung 40154, Indonesia

Abstract
Ethnomathematics as a field of study in mathematics education examines and studies mathematical ideas in various cultural activities practiced by ethnic, social or professional groups. This research was carried out as part of the exploration and inventory of ethnomathematics to reveal mathematical representations and formulate a system of calculations used in the Marosok trading tradition by the Minangkabau tribe in West Sumatra. The Marosok buying and selling tradition is the tradition of shaking hands with "marosok" or touching fingers covered with cloth (cover), between sellers and buyers with the aim of obtaining price agreements in buying and selling livestock using nonverbal communication. Qualitative approaches and ethnographic methods through the principles of data collection such as field notes, unstructured interviews, and documentation studies were used in this study. The findings of this study show that mathematical representations of finger and gesture symbols in the Marosok Tradition contain basic numbers one, two, three, four, five and two and a half as well as two types of operations, namely addition and subtraction. This mathematical representation is used to obtain other numbers needed in livestock buying and selling transactions using a certain formula.

Keywords
Ethnomathematics, Mathematical Representation, Marosok Tradition, Minangkabau

Topic
Mathematics Education

Link: https://ifory.id/abstract/6Rp9BHvTj2Er

Corresponding Author
Ilah Nurlaelah

Institutions
1Department of Natural Sciences Education, Postgraduate School of the Indonesia University of Education
2,3,4 Faculties of Mathematics and Natural Sciences Education
Indonesian University of Education

Abstract
This exploratory study aimed to analyze research skills and explore the authentic research abilities that can support students research skills. The study engaged sixty eight students of science class from two schools in Kuningan district. The data was collected through research skills tests in the form of 11 items of essay questions including seven components of research skills: 1) Understanding phenomena and identifying problems, 2) formulating problems, 3) composing hypotheses, 4) making research designs, 5) implementing experiments and collecting data, 6) analyzing data, and 7) making conclusions. The results revealed that the authentic research abilities of students, shown from the seven components of research skills, were very lacking. The average score of the rubric was 1, it meant that the students were less skilled. The largest percentage of the average test score in both of schools showed that they were in very less category, 72% (first school) and 79% (second school). The achievement analysis on seven components of student research skills was still in the range of the score 0-1.

Keywords
Keywords: Research skills, students

Topic
Science Education

Link: https://ifory.id/abstract/yBXYv2EDPM69

Corresponding Author
Nadya Damayanti

Institutions
(a) Department of Physics Education, Universitas Negeri Semarang, Indonesia
(b) Science and Mathematics Department, Matthayom Siriwanwari II Secondary School, Songkhla, Thailand.
*damayanti.nd14[at]gmail.com

Abstract
There are many challenges faced by some countries which lead them to revise their educational curriculum, including in Thailand. In Thailand, the revised of curriculum in science learning field with SEPs indirectly demands teachers to include High Order Thinking Skills in their teaching and learning as well as in assessment process. By concerning this phenomenon, this study was aimed at describing the realization of the cognitive levels from bloom taxonomy used by Physics teachers. Six classifications of the cognitive levels in bloom taxonomy were divided into two order thinking skills, namely Low Order Thinking Skills (LOTS) and High Order Thinking Skills (HOTS). To achieve the aforementioned objectives, this study employed qualitative research design. Accordingly, the subjects of this study were a Physics teacher in Matthayom Siriwanwari II Songkhla Secondary School and students in two classes, covering matthayom 5th and matthayom 6th. As stated earlier, there were three types of analysis in this study, the analysis of level, the evaluation of level, and the creation of level. Besides, the reasons which interfered the teacher to use cognitive level of bloom taxonomy High Order Thinking Skills were also investigated. The results showed that according to the analysis of matthayom 5th and 6th physics final examination items the cognitive levels used were 0% of remembering, 3.3% of understanding, 33.3% of applying, 50% of analyzing, 3.3% of evaluating, and 3.3% of creating. Meanwhile, matthayom 6th had 0% of remembering, 0% of understanding, 25.7% of applying, 51.4% of analyzing, 5.7% of evaluating, and 17.1% of creating. By referring to these results, it is known that the physics test items used small portion of evaluating and creating aspects. Based on these findings, it is known that the portions of evaluating and creating aspects are still low. However, these results actually can be a starting point in fulfilling the demand of the revised curriculum by the ministry of education.

Keywords
HOTS items; Physics assessment; secondary school

Topic
Physics Education

Link: https://ifory.id/abstract/m2FbfyndeChP

Corresponding Author
Rintoni Rintoni

Institutions
a) Candidate for Master of General and Character Education, Indonesia University of Education
rin.toni[at]upi.edu
b) Department of Citizenship Education, Indonesia University of Education
c) Department of Biology Education, Indonesia University of Education

Abstract
This study aims to explore, study and identify information about character education of environmental care through biology learning. This research was conducted on biology learning, the sub-chapter of ecosystem in class X (Ten) at SMK Negeri 1 Pusakanagara, Subang. This study uses a qualitative approach with a case study method. Data collection techniques are carried out by observation, interviews and document analysis. Data are analyzed by stages: data collection, data reduction, data presentation and conclusion drawing; then the validity was tested using triangulation. Based on the results of the study, it was found that: 1) In biology learning planning contained values of environmental care on learning goals, learning processes and learning evaluation, 2) During the learning process the teacher taught and instilled character values of environmental care through information transfer (value), habituation, modelling and conditioning, 3) In evaluating learning, the character values of the environmental care are cultivated through cognitive, affective and psychomotor assessment. This paper is expected to stimulate research and develop education science and practice in Indonesia.

Keywords
Character Education, Environmental Care, Biology Learning, Ecosystem

Topic
Biology Education

Link: https://ifory.id/abstract/eUQVHD7q6RwA

Corresponding Author
Delisma Delisma

Institutions
1Program Studi Magister Pendidikan Kimia, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2Departemen Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*delisma[at]upi.edu

Abstract
This study aims to analyze conception, threshold concepts, and troublesome knowledge in redox reactions. This study uses a qualitative method by analyzing journal articles which presented research studies about conception. Beside, this study also conducted interviews with five chemistry teachers to obtain information about the thresholds concept and troublesome knowledge. Based on the analysis of the journal about conception for redox reaction, the majority of students answered questions correctly regarding the concept of the definition of oxidation numbers based on binding and releasing oxygen, determining reducing and oxidizing agents. In contrast, most students experience a misconception about the concept of oxidation and electron transfer, which is to assume that the charge on the molecule and polyatomic ion is an oxidation number, changes in charges on polyatomic ions and molecules can be used to identify oxidized and reduced species, and electron transfer occurs as the bond between cation and spectator ion breaks/ forms. Meanwhile the threshold concept are position of elements based on groups, proust laws, equation of reaction, electronegativity, symbols and element names, and chemical nomenclature. While troublesome knowledge for redox reactions are an abstract concept, complexity in determining oxidation numbers, complexity in using definitions, and language used.

Keywords
Conception, threshold concepts, troublesome knowledge, redox reactions

Topic
Chemistry Education

Link: https://ifory.id/abstract/7mYt6XurAaJE

Corresponding Author
Elia Mustika Sarih

Institutions
a) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia
*eliamustika1[at]upi.edu
b) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia

Abstract
The purpose of this research is to analyze the mathematical critical thinking ability of students viewed by gender. This research used descriptive qualitative method. The data was collecting by using written test and interviews. The subject in this research consists of 6 students from the 11th grade in one of senior high schools in Bekasi. The subject were divided into two categories of gender, female and male. Based on the result of research, it was concluded that mathematical critical thinking ability of female students are better than male students. Both of male and female students have competencies in creating clarification. They have no different level in these competencies. Moreover, female students are better than male students in term of making inference and assessment. However in term of making strategy male students are better than female students.

Keywords
Mathematical critical thinking; Gender

Topic
Mathematics Education

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

Corresponding Author
Indrie Prihastuti

Institutions
(a) Doctoral student of Science education at Universitas Pendidikan Indonesia
Jl. Dr. Setiabudi 229 Bandung, West Java, Indonesia
*arifinindrie[at]gmail.com
(b) Science Education, Universitas Pendidikan Indonesia
(c) Chemistry Education, Universitas Pendidikan Indonesi

Abstract
This case study aims to obtain an overview of cognitive levels in science items tests used in the secondary school assessments in Banten Province. Cognitive level analysis was carried out on 3 types of science assessment documents (1) national examination (UN) from year 2017 and 2018; (2) national standardized school examination (USBN) used in eight districts from year 2018, and (3) summative tests taken from 8 secondary schools in each district of Banten Province. Determination of cognitive level was using Bloom taxonomy revision. In addition, data collection was conducted through questionnaires to capture information about teachers professional development on designing science items test. The questionnaire was responded by 30 science teachers from representatives of 4 districts in Banten province: Lebak, Serang, Cilegon and Tangerang. Interview was conducted for 5 selected teachers to get deeper information about PD programs. The results showed that percentage of cognitive levels in UN documents especially for higher level questions (Level C4) has increased over the past two years. Meanwhile, lower level questions has decreased especially for level C1 questions. Cognitive level analysis of USBN document showed that the highest percentage (50%) of cognitive levels is level C2, followed by level C3 of 26%, and 18% of level C1. The analysis of cognitive levels in summative test document showed that the questions with level C2 have the largest proportion (56%), followed by the questions of level C1 and C2 with the same proportion of 22%. There were no higher level questions which made by teachers in USBN and summative test documents. Misalignment of cognitive level was occurred between basic competency standard (KD) and teachers questions in summative test documents especially for KD with analyzing (Level C4) verbs. The teachers professional development programs related to assessment and test item development were still lack of direct practices especially for developing higher level questions. Intensive teachers professional development programs are really needed to improve teachers skills in developing higher level items test.

Keywords
cognitive level, assessment, question, test, teacher

Topic
Science Education

Link: https://ifory.id/abstract/ZudR3kbjzNFH

Corresponding Author
Rini Fath Marsya

Institutions
a) Program Studi Magister Pendidikan Kimia, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudhi No. 229, Bandung, 40154, Indonesia
*rini.f.marsya[at]upi.edu

b) Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudhi No.229, Bandung, 40154, Indonesia.

Abstract
This study aims to investigate the pre-service chemistry teachers- (PCTs-) views of the nature of science and technology (VNOST) for organic light-emitting diodes (OLED) learning. OLED technology contains aspects of VNOST and could be integrated into chemistry learning in the classroom. It was recognized that the exploration of views held by PCTs- on the nature of science and technology (NOST) is an essential step forward towards documenting views and beliefs held by these teachers. Adequate PCTs- VNOST will bring critical to effective classroom learning. The investigation of VNOST used a questionnaire from Aikenhead. The NOST questionnaire consisted of eight multiple-choice items with four aspects. These four aspects are the definition of science and technology, the epistemology of science, the internal sociology of science, and the external sociology of science. The VNOST were classified into three categories. These three categories are realistic (R), has merit (HM), and naïve (N). The results show that the PCTs were classified into R category in three NOST sub-aspects, into HM category in four NOST sub-aspects, and into N category in one NOST sub-aspect.

Keywords
Pre-service chemistry teacher; Nature of science and technology; Organic light-emitting diodes

Topic
Chemistry Education

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

Corresponding Author
Euis Erlin

Institutions
1 Biology Education Study Program, FKIP Galuh University, Jl. R.E Martadinata No. 150, Ciamis, 46215, Indonesia.
2 Science Education Study Program, Postgraduate School, Indonesian Education University, Jl. Dr. Setiabudhi, Bandung 40154, Indonesia

Abstract
The aims of this study to examine the influence use of the metacognitive regulation to achievement student in microbiology learning. The subject matter learned are Role of Microbes in Health and Microorganism Ecology on food. Quasi-Experimental with the type of Non-equivalent Control Group Design were used in this research. Students involved in the study were 27 Biology Education students. There are two classes used in this study, namely the class using the metacognitive regulation as an experimental class consisting of 14 students and the non-metacognitive regulation class as a control consisting of 13 students. Learning is done using the method of discussion. In the experimental class discussion is assisted with questions about subject matter. The instrument used was the concept mastery test and self-reflection questionnaire. The results of the study showed that there were differences in the increasing of student achievement between those using metacognitive regulation and non-metacognitive regulation. In learning with a metacognitive regulation obtaining an increase in the average criteria score (g = 0.59), while the non-metacognitive regulation learning obtained an increase in the low criteria score (g = 0.26).

Keywords
Metacognitive regulation, concepts mastery, discussion method

Topic
Biology Education

Link: https://ifory.id/abstract/PUuxgREf3M4p

Corresponding Author
Lukman

Institutions
(a) graduate school in mathematics education, Indonesia University of Education

(b) graduate school professor of mathematics education, Indonesia University of Education

Abstract
At present statistics based information is widely used by various institutions and social media, therefore statistical literacy as an essential knowledge has been recognized by various modern countries is something that must be owned by every citizen in todays information-based society. Students need statistical knowledge and skills to apply in their studies and daily life. This study aims to assess the level of statistical literacy and variables that influence the increase in undergraduate literacy in undergraduate students in Indonesia. The Statistical Literacy Model used is the model proposed by Gal (2004), the knowledge component (consisting of five cognitive elements: literacy skills, statistical knowledge, mathematical knowledge, context knowledge, and critical questions) and disposition components (consisting of two elements: attitude critical, and beliefs and attitudes). A survey was given to 114 undergraduate education and non-education students who had studied basic statistics and those who had not. The results showed that the level of student statistical literacy for all components was sufficient, for the component of good knowledge, and the low disposition component. The average statistical literacy score of students who have studied basic statistics is higher than those who have not studied basic statistics. Four factors influence student statistical literacy, namely: mathematical ability (logical and critical thinking), general knowledge, literacy skills (language), and statistical knowledge.

Keywords
Statistical Literacy, Knowledge Components, and Components of Disposition.

Topic
Mathematics Education

Link: https://ifory.id/abstract/PU6qyhRgpbEX

Corresponding Author
Hamdunah Hamdunah

Institutions
Mathematics Education Department, STKIP PGRI Sumatera Barat

Abstract
Learning media is one of the important things to improve the quality of learning. Toward learning media developed in accordance with the student-s needs, a learning can be carried out well. Right now, there is no learning in the statistics course that is in accordance with the needs of the Informatics Education Study Program Students. Based on the background of the problem, the purpose of this study was to analyze the need of STKIP PGRI Sumatra Barat students on learning media of statistical course. It was a Research and Development using the design of Plomp development (Preliminary research, prototyping phase, and assessment phase). The stages carried out were limited to the preliminary research stage. At this stage, the process was conducted by analyzing lesson plan, syllabus, learning resources and student needs analysis towards questionnaire of student-s need and interview instrument towards students and peers, as well as analyzing student characteristics. Those instruments were analysis sheets in the form of questionnaires and interview guidelines. Questionnaires were given to students of the Informatics Education Study Program. Questionnaire and interview data were analyzed qualitatively. The results of the study show that students need a problem-based learning media in a Statistics Course at Informatics Education Study Program of STKIP PGRI Sumatra Barat.

Keywords
Learning media, Statistics, problem-based learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/WPjDbpT2g9CY

Corresponding Author
Mulyadi Mulyadi

Institutions
1Program Studi Pendidikan IPA, Sekolah Pascasarjana Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia
3Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
Abstract. The purpose of this study was to improve the critical thinking skills of junior high school students through the application of a science writing heuristic approach with multiple representations of hearing. The method used was the quasi-experimental method with Pretest-Posttest Control Group design with 24 samples in the experimental and control classes. The research instrument used was an essay test. The average value of the experimental class pretest 11.8 increased at posttest to 80.5 with an N-Gain value of 0.8. In the control class the average value of pretest 12.0 increased when the posttest became 71.8 with an N-Gain value of 0.7. Based on the Paired Sample T Test, it is known that the significance value is 0.001 <0.05, so it can be concluded that there is a significant difference in the improvement of critical thinking skills between students who have applied the science writing heurastic approach and the multiple representative hearing with students who apply the science writing heurastic approach without multiple representation. Based on these results, the Science Writing Heuristic approach with Multi Representation on Hearing material can be used as an alternative learning strategy to improve students critical thinking skills.

Keywords
Heuristic Science Writing Approach, Multi Hearing Representation, Critical Thinking Skills, Quasi-Experiment, Science Education

Topic
Science Education

Link: https://ifory.id/abstract/BUmbVt2fzvqj

Corresponding Author
Pramita Sylvia Dewi

Institutions
1) Pendidikan Guru Sekolah Dasar, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35145, Indonesia
*pramita.sylvia[at]fkip.unila.ac.id
2) International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
3) Pendidikan Ekonomi, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35145, Indonesia
4) Pendidikan Matematika, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35145, Indonesia

Abstract
A study was conducted to measure the scientific literacy of levwl four students on the theme of learning about global warming. This survey research involved 73 students in two different study programs at Lampung University. Sampling is done by purposive sampling method. Students scientific literacy is measured using tests of knowledge and attitudes developed according to scientific social issues. This test is built under the 2015 PISA framework and is validly used to measure scientific literacy between high achieving and low-achieving university students. The findings show that there are significant differences between the two scientific literacy competencies, namely knowledge and attitude. But the average value of each attitude competency revealed that there were no significant differences between male and female students.

Keywords
Literacy scientific, Social scientific issues, Prospective educators

Topic
Science Education

Link: https://ifory.id/abstract/kXF2VQHxaRzN

Corresponding Author
Rifa Kurnia Agriyana

Institutions
1) Program Studi Pendidikan Dasar, Sekolah Pascasarjana Universitas Pendidikan Indonesia Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

2)Program Studi Pendidikan Kimia FPMIPA Universitas Pendidikan Indonesia Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
This study aims to determine the effect of the Read-Answer-Discuss-Explain-and Create (RADEC) learning model and Inquiry learning model on science process skills (SPS) of elementary school students. This quasi-experimental study used the matching pretest-posttest design. The research subjects consisted of 2 experimental classes, namely the experimental class 1 which obtained the RADEC learning model and the experimental class 2 which received the inquiry learning model. The two classes came from one of the public elementary schools in the city of Bandung. The research instrument used was the Science Process Skill test on the theme "Ecosystem" with multiple choice questions. The results showed that both learning models could increase SPS significantly (p <0.05). However, the RADEC learning model can increase SPS higher (0.37) than the inquiry learning model (0.11) significantly (p <0.05). Thus it can be concluded that the RADEC learning model can increase SPS more than the inquiry learning model.

Keywords
RADEC learning model, inquiry, science process skills

Topic
Science Education

Link: https://ifory.id/abstract/DVu4nmPwtbRT

Corresponding Author
rahmi fauzana

Institutions
Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia

Abstract
This study aims to determine the differences in the enhancement in mathematical literacy skills between students who get learning with Realistic Mathematics Education (RME) approach and students who get regular learning. This study was is a quasi-experimental with nonequivalent control group design. The population of this study were all eighth grade students of one of the MTs Negeri in Bandung in the 2018/2019 academic year. Sample of this research was two classes as experiment class amounted to 32 students and control class amounted to 32 students with using purposive sampling technique. The instrument used is a test of mathematical literacy skills. The results showed that there are differences in the enhancement of mathematical literacy skills between students who studied with Realistic Mathematics Education (RME) approach and students who studidusing regular learning.

Keywords
mathematical literacy, Realistic Mathematics Education

Topic
Mathematics Education

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

Corresponding Author
Baiq Repika Nurul Furqan

Institutions
Bandung Institute of Technology
University of Indonesia

Abstract
The introduction of Biotechnology subject started in SMP (9) and deepen in SMA (12). One of the subjects discusses modern biotechnology product through Genetic Engineer technique to produce lipase enzyme. Students of SMA knowledge on this subject are still limited since the source of information used by the teacher in explaining the subject is generally based on the textbook and delivered through lecturing method. The use of learning media with virtual-technology based is expected to provide an illustration of information which can make it easier and more attractive to understand. In this study, two medium is created, including text and video animation for introducing the students about enzyme lipase production through recombinant technique. To test the superiority of video animation media, the test is done to SMA students in Lombok through the same questions given to test students understanding of the subject, yet video animation and text are offered to give explanation. The evaluation shows that video animation could improve the average outcomes, be more informative and interesting, also be easier to understand that information through text which is shown in advisability test by Biology teachers and students responses. Thus, video animation media can be used as Biotechnology learning media.

Keywords
biotechnology, genetic engineer, enzyme lipase production, video animation

Topic
Biology Education

Link: https://ifory.id/abstract/nAa6G7xbyhRw