Indonesia Conference Directory

Corresponding Author
Amrullah Amrullah

Institutions
Universitas Mataram

Abstract
The metric dimension of a graph is one of the interesting problems in the research of dimensions of the graph. There are many open problems that have not been resolved until now, some of them are metrics dimension of the bridge graph and metrics dimension of the disconnected graph. This paper presents the metrics dimension of the bridge graph in several classes of graphs namely circle, complete, and star graphs. We know that the metric dimensions of the complete, circle or star graph have been obtained. The bridge graph B (G_1,G_2,e) is a graph which is obtained from the operation of adding edge e to graphs G_1 and G_2. To obtain the metric dimension of the bridge graph from the graphs G_1 and G_2 on edge e, pd(B (G_1,G_2,e)), we used the graph structure of G_1, G_2 and the properties of the bridge graph based on the endpoint on the edge e. The results, we have show the metric dimension of the bridge graph B(G_1,G_2,e) for the circle, complete, or star graphs.

Keywords
metric dimension, bridge graph, circle graph, complete graph, star graph

Topic
Mathematics

Link: https://ifory.id/abstract/UK4LVcCkGNrZ

Corresponding Author
nadi suprapto

Institutions
Department of Physics, Universitas Negeri Surabaya
*nadisuprapto[at]unesa.ac.id

Abstract
Through a research project of exploring physics concept in Techno Park, this study was manifested. It explored the existence of the application of the physics concept as part of exhibitions in museums, technopark, and science centers. The author specified the discussion into “Gravitram”. It is a complex system in which an electric motor lifts metal balls up to the top of the gravitram system, so each ball experience the law of conservation of energy. Rationally, the author adopted the qualitative paradigm in the research methodology. Documentation study through photo-elicitation and video analysis; and content analysis of electronic resources were used in the data collection. For a clear explanation, the findings and discussion are started from the history of the gravitram system, gravitram in the world, and the physics analysis of the system itself. The discussion is also exploring further the role of this system as a part of physics leisure, outdoor learning, or both of them.

Keywords
physics; gravitram; outdoor learning

Topic
Physics Education

Link: https://ifory.id/abstract/a4bWh9ft7nBk

Corresponding Author
Salman Alfarisi

Institutions
UPI

Abstract
The paper explained about the profile of students creative thinking skill in designing optical tool prototype. The research method used mixed method with explanatory sequential design model. The research design was experimental design. Subject of this study consist of 22 students on the 11th grade at one of Senior high school in Jambi. Students were assigned to design prototype which is the problem solution of optical tools practice. The instrument of assessment design used in this research was assessment of design process that consist of 5 assessment aspects that implicated STEM field (Science, Technology, Engineering, and Mathematics). The result of this study showed by using STEM approach method, students can think creatively in the process of design with percentage rate around 66,25%.

Keywords
Creativity, STEM Approach, Design Process

Topic
Integrated Science Education

Link: https://ifory.id/abstract/Xu9Dv3Hy2Qjg

Corresponding Author
Syefia Azizia Malik

Institutions
1Program Studi Pendidikan Biologi, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2Departemen Pendidikan Biologi, Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
Abstrak. Studying complex and abstract plant anatomy, the use of isomorphism diagram is one way to help students to understand the concepts. When studying diagram, students surely involve complex cognitive activities. One of The students- successes in understanding the various concepts contained in the diagram, can be determined by cognitive activities that occur in working memory. This research is a descriptive study which includes 10 senior high school students in Bandung. The research aims to analyze the relation between cognitive activities and students- comprehension towards spatial isomorphism diagrams of plant anatomy. The students are asked to analyze the spatial isomorphism diagrams of plant anatomical structures. Then, the students will be given questions to measure the level of comprehension after learning spatial isomorphism diagrams. The result shows that there are five kinds of cognitive activities when students study spatial isomorphism diagram. Those are activating prior knowledge, identifying images, comparing images, interpreting symbols, and drawing conclusion. Hence, there are several students who have low abilities, they only have two kinds of cognitive activities. This is in accordance with the level of students- understanding of plant anatomy in the medium to low categories. The result shows that the type of cognitive activities that students have contributes the students- conprehension of plant anatomy.

Keywords
Cognitive Activities, Spatial Isomorphism Diagram, Plant Anatomy

Topic
Biology Education

Link: https://ifory.id/abstract/mwbjW4NBPcgk

Corresponding Author
Arifan Jaya Syahbana

Institutions
a) Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Bandung, Indonesia
* arifanjaya[at]s.itb.ac.id
b) Center for Earthquake Science and Technologi Indonesia, Bandung, Indonesia
c) Research Center for Geotechnology, Indonesian Institute of Sciences, Bandung, Indonesia
d) Department of Ocean Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Bandung, Indonesia
e) Research Center for Disaster Mitigation, Institut Teknologi Bandung, Bandung, Indonesia

Abstract
Special Region of Yogyakarta is one of a big cities in Indonesia which has important meaning from the political, social, economic and cultural aspect. This area is located in a high earthquake hazard zone based on the 2017 Earthquake Hazard Map. This location also mentioned has accelerated bedrock acceleration up to 0.6g. In this study, a re-analysis of PSHA will be carried out using the OpenQuake software with the GEM database and the latest attenuation to see the number of acceleration differences generated in the bedrock. Simulation is done by making two logic tree attenuation scenarios, later called the Pusgen scenario (1) and the Cummins scenario (2). The result of this study is the first scenario will result in an acceleration greater than the second scenario. Bedrock PGA based on Pusgen scenario range from 0.431-0.720g in another hand Cummins scenarios ranges from 0.405 to 0.709g.

Keywords
sensitivity; attenuation; bedrock; PGA; PSHA; Yogyakarta

Topic
Physics

Link: https://ifory.id/abstract/z9mDXEMRFQGp

Corresponding Author
Eka Fitrajaya Rahman

Institutions
Department of Computer Science Education, Universitas Pendidikan Indonesia

EEDIS Laboratory, Djillali Liabes University, Algeria

Abstract
Learning by using multiplayer games can stimulate students to discuss and think critically. Therefore, this research is intended to develop a multiplayer game, the snake ladder game, for learning computer systems. The division of groups and methods of discussion using the method of Student Team Achievement Division (STAD), which consists of apperception, delivering material, discussion, quiz, progress report, and final rewards. The game is implemented using multiplayer games based on interactive multimedia, which contains learning material, quizzes, tests, and issues that need to be discussed. To test this application in an experiment, we use two classes as an experimental and control group. The results obtained indicate that there is an increase in students cognitive, a good response to multimedia that is developed, and can be used as a medium for students to think critically.

Keywords
Learning Media, Serious Game, Critical Thinking

Topic
Computer Science Education

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

Corresponding Author
Nova Kurnia

Institutions
a) Department of Chemistry Education of IKIP Mataram, Jalan Pemuda No 59A, Mataram 83125, Indonesia.
*novakimia88[at]yahoo.com
b)Science Education Program, School of Postgraduate Studies, Indonesia University of Education, Jalan Dr.Setiabudhi No 229, Bandung 40154, Indonesia.
c) Department of Food Science and Technology of IPB University, Jalan Raya Dramaga, Bogor 16002, Indonesia

Abstract
Food was likely to be contaminated by hazards during processing steps. On the other side, food safety was the main prerequisite for consumption. Nowadays, the hazard analysis critical control point (HACCP) has been implemented as food safety assurance system. This research aimed to know the students ability in reviewing traditional food HACCP through project-based learning in food chemistry course. This research employed a descriptive method as research design. Subjects of the research were 16 students eight semester of chemistry education program at one of the colleges in Mataram City. To collect data, the instrument of performance assessment rubrics and questionnaire were used. To conclude, the data indicated that students were able to review traditional food HACCP in terms of raw material and processing step through project-based learning. They were very enthusiastic toward the project activities due to it was related to their daily culture.

Keywords
traditional food, HACCP, project-based learning, food chemistry

Topic
Chemistry Education

Link: https://ifory.id/abstract/XJ63YBacteDd

Corresponding Author
Eka Danti Agustiani

Institutions
a) Pusat Pengembangan dan Pemberdayaan Pendidik dan Tenaga Kependidikan IPA
Jalan Diponegoro 12 Bandung 40115, Indonesia
b)Universitas Pendidikan Indonesia
Jalan Setiabudi 229, Bandung 40154, Indonesia

Abstract
The scientific competence indicators used by OECD in PISA year 2015 are (1) describe phenomena scientifically, (2) design and evaluate scientific enquiry, and (3) interpreting data and evidence scientifically. Those indicators are compatible with HOTS perspectives as they need the three highest cognitive process dimension namely analyse, evaluate and create. To fostering students scientific competency in science learning, teachers must be mastering it first. This study aims to get the teachers scientific competences profile based on OECD indicators in HOTS perspective. From written test done by teachers, it was found that capability in performing those three scientific competence indicators are still in less qualified.

Keywords
Teacher; Scientific competence; HOTS

Topic
Integrated Science Education

Link: https://ifory.id/abstract/kp4aTUXKrwYj

Corresponding Author
Zaenal Abidin

Institutions
Universitas Muhammadiyah Surakarta

Abstract
The lower mathematical connection and reasoning abilities of elementary school students are the background of this research. This happens because students have not been properly facilitated to develop the ability mathematical of connection and reasoning. Mathematics learning can develop connection and reasoning abilities well because mathematics learning has systematic concepts and conceptual relationships. This will have an impact on logical, systematic and rational ways of thinking. Therefore, teachers must be able to choose learning models that can facilitate the ability of mathematical reasoning and connection. One learning model that can be used is the literacy project-based learning model. This study aimed to determine the effectiveness of improving the ability of mathematical connections and reasoning of students who obtain literacy project-based learning. The design of this research was used pretest-posttest non-equivalent control group. Based on research results, conclusions can be drawn about the effectiveness of learning that includes n-gain, minimum completeness criteria, and mastery learning. Literacy project-based learning is very effective in facilitating connection skills and has been effective in facilitating reasoning abilities. That is because literacy project-based learning can present contextual material with literacy works that are made and invited to carry out the process of thinking about the use of mathematical contexts in daily life. Furthermore, students can connect mathematical material with real-life contexts and can make reasoning to interpret learning well.

Keywords
project-based learning, literacy, mathematical connection, mathematical reasoning

Topic
Mathematics Education

Link: https://ifory.id/abstract/4yPV7vkq8ecg

Corresponding Author
Dian Usdiyana

Institutions
1Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia,
Jl. Setiabudhi No. 229, Bandung 40154, Indonesia
Email: dianusdy[at]upi.edu

Abstract
Abstract. This research aims to design an algebra learning sequence on the topic of linear equations in one variable—which was taught in Junior High School. We used design research method to do this, and preliminary design phase in particular. First, we designed a sequence of daily life problems in order for students can be familiar with this. This sequence of problems was used for designing a learning sequence. Next, we designed a sequence of learning according to the theory of Realistic Mathematics Education because this theory provides meaningful mathematics for students. Finally, we discussed the design to obtain final learning sequence for a teaching experiment. We consider that the result of the learning design is better than the conventional learning sequence, and it is more meaningful for students.

Keywords
Realistic Mathematics Education and linear equations in one variabel

Topic
Mathematics Education

Link: https://ifory.id/abstract/FXjZTdDVbm6k

Corresponding Author
Wafa Hanifah Zulkarnain

Institutions
(1*)International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung, 40154, Indonesia
(2*) Department of Biology, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung, 40154, Indonesia

Abstract
The purpose of this study was to analyze the validity and reliability of science virtual test to assess junior high school students- science process skills on levels of organization and cell transport topics, SVT-LOCT. The final design of the instrument was administered to 118 students of 7th graders from two schools in Kabupaten Bandung, Indonesia. The three steps to validate SVY-LOCT are content analysis of levels of organization and cell transport topics, expert judgment and readability test, and trial test (small group try out and larger test). SVT-LOCT was judged through education, content, media, and language by experts and readability test was conducted by teachers and students. The validation resulted in 31 test items that represent eight skills of SPS to assess students- science process skills in levels of organization and cell transport topic. The reliability of SVT-LOCT was considered as high with Cronbach alpha = 0.753 with correlation of XY = 0.65, meaning that the instrument is sufficient to assess students- science process skills.

Keywords
science virtual test, validity, science process skills, levels of organization

Topic
Biology Education

Link: https://ifory.id/abstract/wRmtq8Ge4xET

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
Dwi Putri Desti Utami

Institutions
a) Physics Study Program, Department of Physics Education, Faculty of Mathematics and Natural Science Education, Indonesia University of Education, Jalan Dr. Setiabudhi, No. 229, Bandung 40154, West Java, Indonesia
*dwiputridu18[at]gmail.com; aaminudin[at]upi.edu; mimin_iryanti[at]yahoo.com

b) Department of Soil Science, Faculty of Agriculture, Tanjungpura University, Jalan Prof. Hadari Nawawi, Pontianak 78124, West Kalimantan, Indonesia

Abstract
Soil takes a big role as a source of excess CO2 gas emissions that can be the cause of global warming, mainly peat soils that contain a lot of organic matter. One of the factors that influence is soil temperature. The research aims to analyze the temperature distribution at the surface of the soil to optimize the detection of CO2 gas sensor for soil by designing an appropriate heating system. The method used is an experimental method. Research using peat soil placed in the chamber, the heater was placed on it, and a number of thermometer-digitals are placed at several points on its surface in the x-axis and y-axis by plotted distance from the heater is 5cm, 10cm, and 15cm. Temperature alterations toward time can be observed by thermometer and stopwatch. The temperature distribution at the surface of soil occurs evenly in the radial direction, and further the distance of soil from the heater, the less its influence toward temperature alteration of soil. At plotted distance of 5cm, the temperature alteration toward time is 0.0019oC/s, at 10cm is 0.0004oC/s, and at 15cm is 0.0001oC/s. Based on it, the optimal distance used in the design of the heating system is 5cm and 10cm, and CO2 gas sensor successfully detected CO2 gas on it. This result can be used as supporting data in designing a heating system for portable CO2 concentration gauge for soil.

Keywords
Temperature distribution; Temperature alteration; Peat soil

Topic
Physics

Link: https://ifory.id/abstract/FgXQrPJybKH4

Corresponding Author
Isnie Yusnitha

Institutions
Department of Mathematics Education, Universitas Pendidikan Indonesia

Abstract
Suppose G is a cyclically ordered group. In general, a positive cone P(G) is not necessarily a semigroup. Nevertheless, for particular class of cyclically ordered group G, namely linear cyclically ordered group, P(G) is a semigroup. Furthermore, one can verify that the semigroup P(G) admits a representation on a Hilbert space. We develop the classical Toeplitz algebra theory to more general setting of ordered group, that is, to each cyclically ordered group G such that the positive cone P(G) is a semigroup, we define a Toeplitz algebra Τ (G).

Keywords
cyclically ordered group, linear, semigroup, Toeplitz algebras

Topic
Mathematics

Link: https://ifory.id/abstract/4px7qR9NZLQg

Corresponding Author
Siti Maryam

Institutions
Universitas Pendidikan Ganesha

Abstract
Grape skin is a waste produced from the process of making wine derived from grapes. Currently the use of grape skins is still limited as a natural fertilizer, so that the presence of abundant waste. This study aims to determine the total levels of phenols and flavonoids in the skin of grapes from the waste of wine making. This research is an experimental study to determine the total content of phenols and flavonoids where this compound is an antioxidant. The power of antioxidants can be known by knowing IC50 from grape skins. The study was conducted by repeating three times from samples in the form of grape skin powder. Antioxidant activity can be determined by using the DPPH test. The results stated that the total phenol, flavonoid and IC50 levels of grape skins were 168.55 (mg / 100 gr); 61.10 (mg / 100 gr) and 1,065.19 ppm. The presence of total phenols, flavonoids and IC50 in grape skins is relatively high, so the use of grape skins from the process of making wine makes attention.

Keywords
grape skin, total phenol, flavonoid, antioxidant, IC50

Topic
Chemistry

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

Corresponding Author
Rasim Rasim

Institutions
Department of Computer Science Education
Universitas Pendidikan Indonesia
Jl. Setiabudi No. 229 Bandund Indonesia
rasim[at]upi.edu

Abstract
Teacher-centered learning models make student activities limited. Though the effectiveness of learning can be seen from the activities of students in learning. For this reason, students need to be invited to think, discuss, and share with others. This research was conducted to test the Think-Pair Share model in the effectiveness of learning. This research uses the advantages of interactive multimedia that implements the model. research results can be seen from the students response to multimedia is 90% in this case means that multimedia is very helpful in student-centered activities and cognitive improvement with a gain value of 0.41 in the medium category.

Keywords
Interactive multimedia, think pair share models, Learning Effectiveness

Topic
Computer Science Education

Link: https://ifory.id/abstract/VbuvDHNACT37

Corresponding Author
Lukita Ambarwati

Institutions
Universitas Negeri Jakarta

Abstract
In this paper we will solve the interpolation problem on two dimension, that is given k points (xi,yi,ci), i=1,2,...,k, we will found continuous function U(x,y) such that U(xi,yi)=ci, i=1,2,...,k and U minimizing integral energy order N. The support points (xi,yi) did not have rectangular grid form. We will use tensor product of two Chebychev systems as a base of interpolation function space.

Keywords
Interpolation, Non rectangular grid form, Tensor product, Chebyshev Systems, Minimizing energy

Topic
Mathematics

Link: https://ifory.id/abstract/b6ADyqT7mJQZ

Corresponding Author
RISNINA WAFIQOH

Institutions
Universitas Pendidikan Indonesia1, STKIP Muhammadiyah Bangka Belitung

Abstract
This research aimed to describe revlective abstraction viewed from each of part of reflective abstraction. The research question was about how the students-s revlective abstraction in projecting knowledge of existing mathematical concept . the research approach used was qualitative research approach with study case design as the research method. This research involved 36 eleven grade students. The data were analyzed qualitatively by using hyperRESEARCH application. The first part of students-s revlective abstraction could be seen from how the students developed concept of mathematical problem solving on the learning process in the classroom and on the mathematical problem testing, while the second part of the reflective abstraction could be seen on the process of developing core concept of mathematics learning

Keywords
Reflective Abstraction, Problem Solving, Mathematical Concept

Topic
Mathematics Education

Link: https://ifory.id/abstract/FhAgvuNyMVr3

Corresponding Author
Annisa Nadhira

Institutions
a) Department of Physics Education, Indonesia University of Education Jalan Setiabudi No. 229
Bandung 40154, West Java, Indonesia
*its.annisanadhira[at]gmail.com
b) Physics of Complex Systems, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha 10
Bandung 40132, West Java, Indonesia

Abstract
Knowledge about the physical parameters of rocks is important in order to understand the properties associated with the fact that porous rocks are fluid storage media. The amount of the contained fluid can be estimated roughly by analyzing the pore fraction of rocks. To investigate the pore evolution, a series of uniaxial compression test was conducted on an altered breccia rock sample. The sample was obtained from a potential geothermal area at Kadidia-Sigi, Sulawesi Tengah. The uniaxial compression treatment started from the natural pressure 438,468 N/m2 then, 629,079 N/m2, 1,887,238 N/m2, 3,145,396 N/m2, 4,403,554 N/m2, and 5,032,633 N/m2. Digital image processing and analysis method were applied to record and analyze the deformation of pore and fracture structure. Qualitative analysis was conducted by investigating the produced 2D and 3D images, and it was shown that the pore intensity and the fractures intensity increases as the pressure increase. Quantitative analysis was conducted by investigating the porosity and specific surface area as a function of the applied pressure. It was found that porosity {ϕ(P)} is in the function of a positively second-degree polynomial and specific surface area {SA(P)} is in the function of a negative second-degree polynomial.

Keywords
pore structure; uniaxial mechanical pressure; an altered breccia rock

Topic
Physics

Link: https://ifory.id/abstract/BxRYNvLh9j6b

Corresponding Author
wahyudin wahyudin

Institutions
UPI.

Abstract
This research aims to determine how the application of demonstration teaching method based on multimedia animation can improve learning outcomes on subjects Computer and Basic Network at Vocational High School 11 Bandung. The aims of study are 1) Analyzing the application of Demonstration teaching method based on multimedia animation can improve learning outcomes on the subjects of Computer and Basic Network, 2) Analyzing the influence of Demonstration teaching methods implementation based on multimedia animation can improve learning outcomes on subjects Computer and Basic Network, 3) Analyzing the students response for application of Demonstration teaching method based on multimedia animation can improve learning outcomes on the subjects of Computer and Basic Network. The method used in this research is quasi experimental method with non equivalent control group design that uses 2 classes as research object. The number of sample used is 70 people taken from the students of class X MM 1 as the experiment class and X MM 2 as the control class. Based on the results of the study there are improvement from the control and experimental class as well. The improvement is categorized in low category. This is proved by the results of a gain test that shows the value of 0.13 while in the experimental class as much as 0.27. It shows that the implementation of Demonstration teaching methods based on multimedia animation can improve learning outcomes in subjects Computers and Basic Network higher by 27% compared to without using multimedia that is equal to 13%. In addition, this multimedia also has a high influence on student interest in learning. While the results of the assessment in the form of student questionnaires to the multimedia showed in the category very well by obtaining the average value of 83.73%.

Keywords
Demonstration, Multimedia, Animation, Learning Outcome

Topic
Computer Science Education

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

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
Amalia Suci Lestari

Institutions
magister program of physics education, universitas pendidikan indonesia, Bandung 40154, Indonesia

Abstract
The aim of this research was to investigate the scientific literacy ability of the eleventh year students in the topic of heat and temperature by using Rasch model analysis. This was a case study research by applying post-test only group research design. The samples of the research were of 31 students consisting of 11 male students and 20 female students. Multiple choice test consisting of 25 items were used in this research. The test items were adapted from the PISA framework constructed (r= 0.82). The result of analysis by using Rasch model in form of Wright map display where the students 10P had high ability rate and students 04L, 07P, and 16L with the response pattern considered unfit. The MNSQ outfit value accepted was out of the limit. Generally, percentage of students- scientific literacy ability in the three competencies were categorized low.

Keywords
Rasch model, Scientific literacy, heat and temperature

Topic
Physics Education

Link: https://ifory.id/abstract/YeAH3pnvwJ9y

Corresponding Author
Miftah Khairina Bahari

Institutions
a) Department of Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung, 40154, Indonesia
*dita.khairina[at]yahoo.com
b) Department of Biology Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung, 40154, Indonesia

Abstract
Traditionally taught classes often fail to keep the students active independently and the observed students are shown to be lacking is their metacognitive awareness. Metacognitive awareness is an important aspect to develop as metacognitive knowledge is task or domain-specific and therefore, possibly compensate low ability in concept mastery or lack of relevant prior knowledge. This study aims to investigate the effect of self-regulated learning on students- metacognitive awareness. The method used is a weak experiment method. The sample is taken from grade 7 students in one of the secondary schools in Bandung, Indonesia. The sample includes 27 students consisting of 14 females and 13 males. Self-regulated learning is also found to have N-gain value of 0.19 meaning that there is a low improvement in students- metacognitive awareness. The treatment improves the domain of procedural knowledge the highest out of eight aspects in metacognitive awareness. This research also shows that the difference in the result of the application of self-regulated learning in different gender is that it results in higher metacognitive awareness in female students. This research will be beneficial for researchers by providing them further materials and data on how self-regulated learning affects students- metacognitive awareness.

Keywords
Self-Regulated Learning, Metacognitive Awareness, Electricity

Topic
Integrated Science Education

Link: https://ifory.id/abstract/Nd32XuGMr4FA

Corresponding Author
Rahmawati -

Institutions
a) Program Studi Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Muhammadiyah Makassar, Jl. Sultan Alauddin No. 259, Makassar 90222, Indonesia
b) Program Studi Pendidikan IPA, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
One of the ways that can be used to validate test items is by Rasch Model application. Validation aspects used in this research consist five aspects, such as (1) item measure, (2) item fit, (3) differential items, (4) person measure, and (5) person fit. The test was given in the form of multiple choice as many as 40 items consisting of 23 items about electricity and 17 items about magnetism. The participants were 60 physics students who were given 60 minutes to do the test. Items was analyzed using WINSTEPS version 3.68.2. The results showed that the test items are valid. Reliability alpha of items is 0.90. It means that the quality of test items is very good.

Keywords
Validation, Rasch Model, Electricity and Magnetism Achievement Test

Topic
Physics Education

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

Corresponding Author
yulkifli yulkifli

Institutions
Universitas Negeri Padang

Abstract
Physics learning aims to develop knowledge and train students thinking skills. But in reality, students haven-t been able to develop because they are less trained to find concepts independently. Student worksheets includes teaching materials that can help students find concepts and apply these concepts. The purpose of this study was to produce student worksheets using the inquiry based learning model with the community technology science approach with criteria valid. Learning using a valid student worksheets can improved student-s competence. This type of research is R&D using the Plomp model. The validity assesment is carried out by expert reviews, then analyzed using Aiken-s V formula. The results of validity of student worksheets meet the valid criteria of 0.79. Based on the results of the study, it can be concluded that the student worksheets uses the inquiry based learning model with a science technology society approach valid for use in Physics learning.

Keywords
Students worksheets, Inquiry Based Learning, science technology society approach

Topic
Physics Education

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

Corresponding Author
Fariani Hermin Indiyah

Institutions
Universitas Negeri Jakarta

Abstract
The lecture evaluation application is one solution for the management of the study program administration. This application system is able to store and process academic data systematically from year to year, with the support of computer technology and software provided. Evaluation trends from year to year in each study program, faculty, or overall with high complexity can also be done.

Keywords
lecture evaluation application, evaluation trends

Topic
Computer Science

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

Corresponding Author
Ricky Firmansyah

Institutions
a) AMIK BSI Bandung
Jl. Sekolah Internasional 1-2, Bandung 40282, Indonesia
*rickyapr[at]yahoo.co.id
b) AMIK BSI Bandung
Jl. Sekolah Internasional 1-2, Bandung 40282, Indonesia
masnaing[at]gmail.com
c) STIE Wikara
Jl. Jend. Ahmad Yani No.21 Purwakarta
dindaamalia.s326nus[at]yahoo.com

Abstract
The reading ability of 9-14 years children in Indonesia ranks 40th out of 40 countries studied by the Program for International Student Assessment (PISA). Reading interest must be accustomed regularly at least for yourself, efforts to increase the reading interest need to be fostered from an early age. Gerakan Literasi Sekolah (GLS) was launched to increase the reading interest for school residents, especially students. However, the implementation of GLS in schools is still not utilizing information technology. This research focuses on how to design a web-based literacy information system to increase students reading interest in junior high schools. This web-based literacy information system is designed with Unified Modeling Language (UML) architecture diagrams, implemented using the PHP language and MySQL database system. The system was tested using Black box Testing and a questionnaire for public testing. The results of this study are the literacy information system has been developed that is used to increase student reading interest, where 82.91% of respondents agreed that this system provides convenience in facilitating work and uploading book reviews made by users.

Keywords
internet; literacy; information system; reading interest; website

Topic
Computer Science

Link: https://ifory.id/abstract/7ewNfPtk4RDB

Corresponding Author
Phitsa Mauliana

Institutions
a) AMIK BSI BANDUNG
Jl. Sekolah Internasional 1-2, Bandung 40282, Indonesia
*phitsa.phu[at]gmail.com
b) AMIK BSI BANDUNG
Jl. Sekolah Internasional 1-2, Bandung 40282, Indonesia
rickyapr[at]yahoo.co.id
b) STIE Wikara
Jl. Jend. Ahmad Yani No.21 Purwakarta 41114, Indonesia
surtikadewiai[at]gmail.com

Abstract
Today in Indonesia there are still many orphanages which have many financial, facilities, and affection limitations considering the orphanage is a place where children are abandoned by their parents. Donations are needed to support the growing number of foster children such as food, foster education, and electricity/water fees and so on. One funds source for orphanages in various countries comes from several online donation sites on the internet. This research proposes the "e-Panti" web-based orphanage information system as a means of raising donations. Through this system, benefactors will be able to see profiles of orphanages, lists of orphans, orphanage activities, and how to make donations. This system was developed by the waterfall method which was designed using the Unified Modeling Language (UML) architecture diagram and implemented into the PHP web programming languages using MySQL database system. The system is tested using Black box testing to ensure system functionality and user acceptance tests using questionnaires. The results of this study are the development of the "e-Panti" web-based orphanage information system with a user acceptance rate of 77.50% based on the the questionnaire results.

Keywords
donation; information system; internet; orphanage; website

Topic
Computer Science

Link: https://ifory.id/abstract/kMG48VwtWjdQ