Indonesia Conference Directory

Corresponding Author
Sri Hastuti Noer

Institutions
Faculty of Teacher Training and Education University of Lampung

Abstract
The efforts to improve students reflective thinking and self learning can be done through a learning process by providing contextual problems that generate curiosity, recognize what is known and what is needed from the problem, and provide opportunities for students to work, and draw conclusions from problem. One learning model that can facilitate these activities is guided discovery learning. This study aims to: 1) Design and develop guided discovery learning models to improve reflective thinking abillity and student self learning, 2) Analize the effectiveness of models and learning tools that are developed towards improving reflective thinking abillity and student self learning. The population subjects in this study were all eighth grade students of the State Junior High School in Bandar Lampung City. Each one of the sample schools was randomly selected from the high-rank and middle-rank schools. In each school the sample was taken randomly in two classes. One class as an experimental class, applied guided discovery learning, one class as a control class, which is applied to conventional learning. The instrument used is a test of reflective thinking ability and student self learning scale, interview guidelines, observation sheets and questionnaires. Based on the study it was concluded that: 1) The guided discovery model that was developed has met valid and practical criteria, 2) The guided discovery model that was developed effectively to improve students reflective thinking abillity and studets self learning both in high- rank scholl and middle- rank school.

Keywords
Guided discovery, reflektif thinking, self learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/NeYUV6RMX72J

Corresponding Author
Mahesti Kusdiastuti

Institutions
(a) Master of Science Education, Universitas Mataram, Jl. Pendidikan No. 37, Mataram 83114, Indonesia
(b) Physics Education Study Program, Universitas Mataram, Jl. Majapahit No. 62, Mataram 83125, Indonesia
(c) Physics Education Study Program, IKIP Mataram, Jl. Pemuda No. 59A, Mataram 83125, Indonesia

*gunawan[at]unram.ac.id

Abstract
The combination of guided inquiry learning models combined with advanced organizers is needed to facilitate students who have diverse initial abilities so that they can participate in inquiry activities well. The purpose of this study is to produce a physics learning device in a guided inquiry model that is combined with an advance organizer, who has valid, practical, and effective criteria in improving students understanding of the physics concept. The learning tools testing phase was carried out in the class X in one of the high schools in the Mataram, using one group pre-test post-test design. Observation and concept understanding tests do data collection. The results of the study show that: Learning tools developed are valid; The practicality of learning tools was tested through the implementation of physics learning by the guided inquiry model combined with advance organizer, and the effectiveness of the learning tools can increase student understanding of physics concepts. These results indicate that the learning device developed has valid, practical, and effective criteria to increase student- understanding of the physics concept.

Keywords
Advance Organizer; Guided Inquiry; Learning Tools; Understanding of Concept

Topic
Physics Education

Link: https://ifory.id/abstract/98R2JxVq4Pbn

Corresponding Author
Khatriya Tiffani Tamimiya

Institutions
(a) Post Graduate of Science Education, Universitas Negeri Yogyakarta, Jl. Colombo no. 1 Yogyakarta
(b) Biology Education, Universitas Negeri Yogyakarta, Jl. Colombo no.1 Yogyakarta
(c) MTsN 2 Jember, Jl. Merak no.11 Slawu Jember

Abstract
Abstack. This study aims to: (1) find out the feasibility of LKPD IPA integrated project based learning of Mount Ijen-s local potential for improving the understanding of Earth layer concept and the creative thinking of students, (2) knowing the effectiveness of LKPD IPA integrated project based learning of Mount Ijen-s local potential with the understanding improvement Earth layer concept and the creative thinking of students. This study refers to the the development models of 4D Thiagarajan and Sammel. This research conducted in SMPN 1 Tamanan. The empirical test was conducted in 1 experimental class consisting of 28 students and 1 control class consisting of 24 students. The Integrated PjBL LKPD of Mount Ijen Local Potential is worthy of being used as teaching material by improving the concepts and creative thinking of student understanding with a very good categories. LKPD IPA based on integrated project based learning of the local potential in Mount Ijen is significantly effective for the improvement of students understanding of concepts and creative thinking with a significance value of 0,000 (sig <0.05).

Keywords
LKPD, PjBL, Local Potential, Concept Understanding, Creative Thinking, Eart Layer

Topic
Science Education

Link: https://ifory.id/abstract/VH3g6UMjpfQh

Corresponding Author
Suansah Suansah

Institutions
1) Departemen Pascasarjana Pendidikan IPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The learning process in the education unit must be held interactively, inspiring, fun, challenging, motivating students to actively participate, and providing sufficient space for students. Currently research on the development of KIT Practicum is needed to change the educational paradigm from partial to holistic. This research is a preliminary study to develop the KIT of science and technology practicum of photosynthesis to build students science process skills. The type of research conducted is Research and Development (RnD) with the development model of Borg and Gall. This study uses the first and second steps of the seven steps that must be taken. Activities begin with a preliminary study conducted in one school involving several students and teachers. The results of this study indicate that science learning photosynthetic material has not used instructional media because of the limitations of practicum tools and materials. Students and teachers need KIT practice science photosynthetic material KIT as a new breakthrough in learning. By using the science practicum KIT in learning, it is expected to be able to build students science process skills.

Keywords
Practicum KIT; science; learning; photosynthesis

Topic
Science Education

Link: https://ifory.id/abstract/GzMt8ZxpCQbj

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
Irvana Nurul Kamalia

Institutions
1Program Studi Pendidikan Biologi, Sekolah Pasca Sarjana, 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
The marine resources in Indramayu Regency have not been optimally utilized bythe community.Through learning at maritime vocational school,management of marine resources makes it possible to develop.The development of investigative practicum is development of practical learning design using 3D method which consists of 3 stages:define,design,develop.Development start from determining object of research,making practical investigation design,testing steps of investigative practical activities,testing the effect and effectiveness of investigative practicum design on students creativethinkingskill and lifeskills on quasyexperiment through Pretest Posttest Non-Equivalent Control Group Design.The research subject was determined by purposive sampling technique.Forty students from the 10th grade of APHP(FisheriesProductProcessingAgribusiness)studyprogram were selected to study biotechnology at SMK MitraMaritim.Data were collected using investigative worksheets, investigative observation sheets,creativethinkingskill instruments,lifeskill tests,questionnaires and interviews to explore students responses regarding investigative practicum.Results of this study are the developed design of investigative practicum thatwas testedwith an average difference test on ability to think creatively has a significance value of 0,000<0,05.Whereas lifeskills differed significantly at pretest-posttest.Pretest was 0.032<0.05,posttest was0.006<0.05. So that it can be concluded that investigativepracticum developed has an effect on creativethinkingskills but in lifeskills there are differences in beginning and ending skills in both classes.Effectiveness is shown from 80% of positive student responses to the application of investigative practical learning.

Keywords
Practic investigation, creative thinking skill, life skills, biotechnology, vocational school, marine resources.

Topic
Biology Education

Link: https://ifory.id/abstract/PQk9HKtTcZVf

Corresponding Author
Muhammad Yakob

Institutions
a) Program Studi Pendidikan Fisika, Universitas Samudra, Aceh, Indonesia
*myakob[at]unsam.ac.id
b) Program Studi Pendidikan Fisika Universitas Syiah Kuala, Banda Aceh, Indonesia.
c) Program Studi Fisika Universitas Samudra, Aceh, Indonesia.
d) Program Studi Pendidikan Matematika Universitas Samudra, Aceh, Indonesia.
e) Program Studi Pendidikan Biologi Universitas Samudra, Aceh, Indonesia

Abstract
A Multitools instrument was developed to measure physical variables such as temperature, magnetic field, and light intensity. Multitools developed using the device of ATMEGA 8535 microcontroller that consists of three sensors: LM35 as a temperature sensor, LDR as a light sensor, and UGN3503 as magnetic field sensor. The design consisted of three stages, namely system design, hardware design, and calibration phase. The calibration test result of Multitools shows alignment level of the temperature sensor (0.9893), light sensor (0.9787) and magnetic sensor (0.9996). Measurement result displayed in physical quantities data and graph on the LCD screen of Multitools. The Multitools can be used in physics lab activity to reduce the effectiveness and train the students- skill in understanding and interpretating the graph.

Keywords
Multitools, Microcomputer Base Laboratory, Temperature, Magnetic Field, Light Intensity

Topic
Physics Education

Link: https://ifory.id/abstract/nW9hfRUjv2q6

Corresponding Author
TATA -

Institutions
(a) Postgraduate School Indonesia University of Education
Jl. Dr. Setiabudi No.299 Bandung 40154, Indonesia
*tatadoank344[at]gmail.com
(b) Departemen Chemistry Education, Indonesia University of Education
Jl. Dr. Setiabudi No.299 Bandung 40154, Indonesia

Abstract
This research is motivated by the idea of the importance of developing practical learning methods. The purpose of this study was to design practicum learning science, technology, engineering, mathematic (STEM)-based on learning to identify synthetic dyes in food. to achieve this, the questions raised in this study are " what are the characteristics of developing STEM based practicum methods for identifying synthetic dyes in food?". As for the research method used is research and development (R&D) consists of the planning phase, which is done is analyzing curriculum, books, and STEM-based practical learning. at the development stage a validation test was carried out by experts related to learning devices that will be used in this study. and at the implementation stage a trial is conducted to determine the development of student literacy. and collected by validation sheet, questionnaire, and observation of teacher and student activities. The results showed that the design of practicum feasible and can be used by high school students class X

Keywords
Practicum Design, STEM, Science Literacy, Dye Synthesis

Topic
STEM Education

Link: https://ifory.id/abstract/aLH7p2djmbuB

Corresponding Author
ema sukaesih

Institutions
a) Science Education Study Program, Indonesian Education University, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*emasukaesih[at]upi.edu
b) Science Education Study Program, Indonesian Education University, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The purpose of this study was to produce a reasoned multiple choice test instrument that was used to measure students critical thinking skills. This research is a development research by adapting the 4-D model according to Thiagarajan which consists of the define, design, develop, and disseminate stages which aim to produce the product. The product developed in this study is a critical thinking ability test instrument on rain theme science subjects. Based on the results of the study, obtained a reasonable, valid and reliable reasoned multiple choice test instrument used to measure students critical thinking skills. The products produced from this study are form of reasoned multiple choice questions accompanied by answer keys and scoring guidelines.

Keywords
reasoned multiple choice test; 4-D model;critical thinking skills

Topic
Science Education

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

Corresponding Author
Ninik Yuningsih

Institutions
a) Program Studi Pendidikan Kimia, Sekolah Pascasarjana Universitas Pendidikan Indonesia
Jl. Dr. Setiabudi No. 299 Bandung, Indonesia
*ninikyuningsih17[at]gmail.com

Abstract
Characteristics of education 4.0 lead to learning features that develop soft skills critical thinking, creativity, and problem-solving and provide opportunities for students to interact, collaborate and learn from each other. One learning approach that can be applied is STEM-based learning that integrates interdisciplinarity between Science, Technology, Engineering, and Mathematics. This study aims to develop STEM-based laboratory learning designs on refining used lubricating oil waste. The research method used is Research and Development (R & D). The steps in this study are (1) Analysis of the curriculum, (2) Analysis of Books, (3) Optimization of experimental procedures, (4) Preparation of practicum design formats, (5) Validation of experts. Data collection techniques were carried out by observation, optimization of experimental results and using a validation sheet to validate the practicum design. Data analysis was carried out by CVR (Content Validity Ratio) and the results were interpreted to determine the validity of the practicum design developed. This study resulted in a practicum design is valid and that was feasible to use.

Keywords
Practical; STEM; Used Lubricants; Mixed Separation Techniques

Topic
STEM Education

Link: https://ifory.id/abstract/mjKCtR4dQacW

Corresponding Author
Riana Antika Amahoroe

Institutions
a) Pascasarjana Pendidikan Kimia, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudi 229, Bandung 40154, Indonesia *raamahoroe[at]gmail.com

b) Depertemen Pendidikan Kimia, Universritas Pendidikan Indonesia, Jalan Dr. Setiabudi 229, Bandung 40154, Indonesia

Abstract
Students must be able to develop the ability to integrate scientific understanding, mathematical skills and engineering design processes in accordance with the demands of the 21st century. These achievements can be obtained through innovative and productive practicum design. This study aims to develop STEM-based practicum designs on making tempeh with raw materials of jackfruit seeds. The use of jackfruit seeds as a new ingredient because jackfruit seeds contains protein, carbohydrates, fat which have equal nutrient contents with soybeans and also jackfruit seeds are natural ingredients that are still wasted as trash. The research method used is Research and Development (R & D). The steps in this study are: (1) Analysis of curriculum requirements in fermentation, (2) Book analysis (3) Optimization of practicum procedures, (4) Preparation of practicum design formats based on optimization results (5) Expert validation. Data collection techniques were carried out by observation and optimization of experimental results and using a validation sheet to validate the practicum design Data analysis using CVR formula to determine validity and feasibility of practicum design. The results showed that calculated CVR value was 1, this means that the practicum design was feasible and could be used by students of class X SMK

Keywords
Practicum Design; STEM; Tempeh fermentation

Topic
STEM Education

Link: https://ifory.id/abstract/RaG6YZmnBQEH

Corresponding Author
Irfan Fauzi

Institutions
a) Postgraduate School Indonesia University of Education
Jl. Dr. Setiabudi No. 299 Bandung, 40154, Indonesia
b) Departemen Chemistry Education, Indonesia University of Education
Jl. Dr. Setiabudi No. 299 Bandung, 40154, Indonesia

Abstract
Changes in the world are now entering the era of industrial revolution 4.0. The Ministry of Education and Culture responds quickly by preparing an appropriate learning curriculum so that students have the skills needed in this era. STEM-based learning is expected to be a solution in facing these challenges. This research aims to develop practical design STEM-based on carbohydrate learning through making paper from banana tree trunks. The use of banana tree trunks was chosen because of the high cellulose and hemicellulose content. The research method used is Research and Development consisting of defining stages, a preliminary study to find out the use of methods used in schools in general. Design stage is the making of learning devices in the form of Learning Implementation Plans and STEM-based student worksheets. Development stage is validated by experts and product trials to find out the feasibility of the practicum design that has been developed. The participants in this study were 25 students of class XII and chemistry teachers. Data was collected by using validation sheets, questionnaires, and observations. From the results of the validation, this research resulted in a feasible practicum design in paper making from banana tree trunks in carbohydrate learning.

Keywords
Practical Design, STEM, Carbohydrates, Paper from Banana Tree Trunk.

Topic
STEM Education

Link: https://ifory.id/abstract/MKLUX9xhjFRZ

Corresponding Author
Rahmawati Dwi pratiwi

Institutions
a) Postgraduate School Indonesia University of Education
Jl. Dr. Setiabudi No. 299 Bandung 40154, Indonesia
b) Departemen Chemistry Education, University of Education
Jl. Dr. Setiabudi No. 299 Bandung 40154, Indonesia

Abstract
The world is entering era of the Industrial Revolution 4.0 which information technology has become the basis of human life. To deal with this era, need to be prepared for more innovative learning system and in accordance with technological advances. Therefore, STEM-based learning can be a solution in the face of such challenges.This study aims to develop a practical method based on STEM in the manufacture of toothpaste from the chicken in the eggshell colloid material. Utilization of eggshell been due to potential high calcium content and change the eggshell is usually wasted as waste into new products that can be used. The research methods used RnD is comprised ofthe planning stagesdo is design the practicum in order to STEM-based produce worksheets and in the development process validation test applied by experts. Participants are students of class XI, teacher and validators Data collected with the validation sheet techniques, questionnaires, and observation activities of teachers and students.This research resulted in the design of a viable practical methods such as lesson plans and worksheetspracticum, so that it can be concluded that the design method STEM-based practicum in the manufacture of toothpaste from chicken eggshells can be applied in learning colloid material.

Keywords
Practical Methods, STEM, Colloids, Toothpaste

Topic
Chemistry Education

Link: https://ifory.id/abstract/zg3yXvZQdkAH

Corresponding Author
Muhammad Syaipul Hayat

Institutions
Program Studi Pendidikan IPA, Sekolah Pascasarjana Universitas Pendidikan Indonesia

Abstract
The paradigm of learning science, especially biology, has now undergone a shift, which is more oriented towards scientific transformation in real world life. Biological content that is learned not only becomes knowledge, but also directed at the utilization of the potential possessed by the content for real life. Therefore, in this paper the author examines the results of research on the development of student lifelong learning, especially Habits of Mind during the taking part in plant diversity course with entrepreneurship-oriented inquiry learning programs. This research involved 31 of 5th semester undergraduate students in biology Education Department in one teachers college in Central Java. The data are taken by rubrics adapted from the Marzano framework. Moreover, the data are taken by observation in learning process too. The results showed that the average Habits of Mind score of students had developed, the data collected before being given the program was 2.69; and the data after being given the program is 3.27 from a total score of 4.00. The data is reinforced by the findings of observation activities during the learning process. Students usually do experiments with one type of work together, even just focus on the core activities, so they become inefficient. After taking several lectures with this program, they can plan neatly before conducting the experiment, can arrange proportional strategies for group assignment, and become more sensitive to feedback. Another finding is that they will always take careful measures (not impulsively), work tenaciously to find solutions even to the end of their knowledge, and finally each student has their self standard of work. Thus, it can be concluded that entrepreneurship-oriented inquiry learning programs applied to the plant diversity course can develop student-s Habits of Mind well.

Keywords
habits of mind, inquiry, entrepreneurship, plant diversity course

Topic
Biology Education

Link: https://ifory.id/abstract/8h92PBWV4YTc

Corresponding Author
Uswatun Sholiah

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

Abstract
This research was a development research that used ADDIE design (analyze, design, develop, implementation, and evaluate). The aim of the study was to develop teaching material based on multiple intelligences to improve multiple intelligence and higher order thinking skills. The characteristics of teaching material developed the insertion of multiple intelligences, namely linguistic, logical-mathematical, visual-spatial, kinesthetic, musical, interpersonal, intrapersonal, and naturalist intelligence. The sample research was students of class X in one of the high schools in Juntinyuat-Indramayu. The results showed that: 1) the feasibility of teaching material based on multiple intelligences have an average score of 2.75 with proper status; 2) the results of the readability test of teaching materials showed a reading rate of 82.1% in the high category; 3) interpersonal intelligence was the dominant intelligence by students in both classes, the improvement of multiple intelligences in the moderate category in the treatment class and the low category in the comparison class; 4) improvement of higher order thinking skills in the moderate category in the treatment class and the low category in the comparison class; 5) Positive student responses to teaching material are 80.8% with strong categories.

Keywords
Teaching material, multiple intelligences, higher order thinking skills, Vertebrata

Topic
Biology Education

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

Corresponding Author
Nurjannah S.Pd

Institutions
Universitas Pendidikan Indonesia

Abstract
This study aims to develop teaching material integration by spirit values through 4S TMD method. The research method used is development research by Richey-s and Klein-s consisting of design, development, and evaluation. This study was conducted until the step of design and development. The method of development teaching materials used is 4S TMD. This article is the first part of the development teaching materials that includes selection and structuration steps. At the selection step, an indicator is developed in accordance with the curriculum requirements, explaining the concept, and analyzing the spiritual value. Furthermore, in the structural step developed concept maps, macro structures and multiple representations. The results of the selection and structuring steps were evaluated by an expert lecturer in the chemical education department. The result of the two steps in this study produced a draft of teaching material integrated by spiritual values. Evaluation of the draft of teaching material has done by expert lecturers in the field of chemical education.

Keywords
4S-TMD, teaching material, spiritual value

Topic
Chemistry Education

Link: https://ifory.id/abstract/HDxg2aGRjf76

Corresponding Author
Omay Sumarna

Institutions
Departement of Chemistry Education FPMIPA UPI Bandung

Abstract
This study aims to improve the quality of learning through the development of teaching materials for SETS-oriented chemistry teacher candidates (Science, Environment, Technology, Society) with the 4S TMD method (Four Steps Teaching Material Development). The developed SETS includes the presentation of material related to environmental, technological and social aspects. The material for teaching material chosen is redox. The 4S TMD method consists of four stages, namely the selection, structuring, characterization, and didactic reduction stages. The selection stage obtained the basic competencies developed in teaching materials. The structuring stage generates a concept map, macro structure, and multiple representations of redox and electrochemical reactions which will be compiled into the first teaching material draft. From the characterization through testing in class X high school students will acquire difficult and easy text categories. The difficult texts will be reduced to didactic. The design stages are analyzing and planning the types of teaching materials developed, the development stage, namely the stage of developing SETS-oriented redox reaction teaching materials with the 4S TMD method, and the evaluation stage, namely the testing phase of the feasibility and understanding of teaching materials.

Keywords
Redox, Electrochemistry, SETS, 4STMD

Topic
Chemistry Education

Link: https://ifory.id/abstract/t6yVGxCDWHwq

Corresponding Author
maya asih rohaeni

Institutions
Universitas Pendidikan Indonesia

Abstract
Abstract, the purpose of this research is to develop an integrated science teaching materials oriented socio-scientific issue pollution theme used for practice critical thinking skills of students of 7th grade through Four Steps Teaching Material Development (4S TMD). This study used the Research and Development (R & D). The development of teaching materials consisted of a selection stage, structurization, characterization and didactic reduction. Based on the feasibility study, teaching materials have met the eligibility aspect of content, presentation feasibility, feasibility, and feasibility of graphics language. Characteristics of teaching materials include the presentation format of teaching materials, the approach of theme-oriented socio-scientific issues, critical thinking skills, compliance with the standards of teaching materials BSNP. Based on the test understanding, jar material fulfils the understanding with a high category. The research in the form of integrated science teaching materials oriented socio-scientific issues in the form of a text-book with the theme of pollution which has gone through four stages of development. These materials can be used as supplementary teaching materials for science teaching.

Keywords
Teaching materials, Integrated Science, pollution themes oriented to socio-scientif issues, critical thinking skills, 4S TMD

Topic
Science Education

Link: https://ifory.id/abstract/9YPvb4CeNFtm

Corresponding Author
Indri Oktaviano Widodo

Institutions
(a) Student of Physics Education Master Program, Sebelas Maret University, Surakarta
*email : oktavianoindri[at]gmail.com
(b) Lecturer of Physics Education Master Program, Sebelas Maret University, Surakarta

Abstract
Science process skills cannot be separated from conceptual learning. To measure science process skills possessed by students, assessment instruments are needed that are easy to use and appropriate. This study aims to measure the science process skills of high school students using the Testlet assessment instrument. Indicators The science process skills used are observing, hypothesizing, planning experiments or investigations, analyzing experimental data, applying concepts or principles, and communicating. This assessment instrument Testlet consists of 6 stem and 3 supporting questions for each stem, questions in the form of multiple choices and given to 36 grade XI students at Madiun 4 High School. The results of this study indicate the Science Process Skills of students at SMA 4 Madiun in static fluid material included in the medium category with an average value of 63.51%.

Keywords
development; Science process skills; Testlet; instrument

Topic
Physics Education

Link: https://ifory.id/abstract/2dEbnRFU3HZ7

Corresponding Author
alqaan maqbullah ilmi

Institutions
Universitas sebelas maret surakarta

Abstract
We developed a TPACK based-physics learning media. This development using 4D methods. Researchers analyzed the need of learning media that can improve students critical thinking skills with technological offerings. This research take the place in SMA ABBS Surakarta. The research subjects were three senior high school physics teachers and fifty one students. We observed the facilities of the school then concluded that the facilities supported TPACK based learning activity. We also gave questionnaire to teachers about the learning activity. The data gathering was carried out using observation rubric, students- worksheets, presentation scoring rubrics, report scoring rubrics, and two tier multiple choice test instrument on critical thinking skill. The media was validated by two lecturers, two physics teachers, and two peer reviewer. Then it tried out in the small group. In the big group, the media is proven could develop the critical thinking skills with the difference between pre test and post test results were significant.

Keywords
Critical thinking, physics lessons, tpack

Topic
Physics Education

Link: https://ifory.id/abstract/e2dfpNrm3uLn

Corresponding Author
Irfan Syamsuddin Syamsuddin

Institutions
Politeknik Negeri Ujung Pandang, Makassar

Abstract
One of the issues in teaching information security in particular cryptography is lack of tools to facilitate students understanding of related topics. The study specifically discusses the development of a web based learning tool for teaching symmetric cryptography in Indonesian language. The module is called NgeXTEA which contains a guide to the process of encryption and decryption in stages using Extended Tiny Encryption Algorithm (XTEA). The development of NgeXTEA including its features is presented. Based on several evaluations with various combinations of characters, it is finally concluded that NgeXTEA module works well as expected.

Keywords
Extended Tiny Encryption Algorithm (XTEA); Symmetric Cryptography; Information Security; Learning Tool

Topic
STEM Education

Link: https://ifory.id/abstract/6KGp8CBjf3vV

Corresponding Author
Siti Julaeha

Institutions
(a) Biology Education, School of Post-graduated Studies (SPs), Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia.
*sitijulaeha2912[at]upi.edu
(b) Department of Biology Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia.

Abstract
Pre-experimental studies on the development of three tier multiple choice tests were conducted to detect and measure of students tree thinking in learning concept of classification. Three tier multiple choice test was developed with web integration of a Google Classroom application for easy feedback. The study with the one group pretest-posttest design involved a number of high school students (n = 29) who had studied the concept of Animal Classification. The research procedure was carried out through stages (literature study, problem analysis, and instrument design). The instrument was, then, validated by expert and analysed with ANATES version 4.0. Tree thinking was measured on the basis of identification of evolutionary characters, phylogenetic relationships, concept of clad, MRCA (Most Recent Common Ancestor), sister groups, tree topologies, number of evolutionary changes, and sequence of evolution in species. The validation results showed that the three tier multiple choice test can be used to measure of students tree thinking. In addition, the results analysis of items with ANATES version 4.0 indicated that the test has high reliability (r = 0.69), very good of differences (D> 0.4) on 12 items, and very good of difficult on 14 items. In conclusion, this study showed that three tier tests for measuring high school student-s tree thinking consist of 20 test items with double MC (4 options each for answer and reason), with 11 test items were received directly (60%), 3 items were received but with repairment (15%), 4 items were rejected (25%).

Keywords
Animal Classification; Google Classroom; Tree Thinking; Web-based Three Tier Multiple Choice Test;

Topic
Biology Education

Link: https://ifory.id/abstract/xGwZ9CmtHyjb

Corresponding Author
Iis Ismawati

Institutions
SDN Babakan 01
Dinas Pendidikan dan Kebudayaan Kab. Bandung

Abstract
Abstract This research was a stem-based didactic research which was conducted on sixth grade students. This didactic design was arranged in mathematics learning by using mathematic skills on the concept of integer count operations, comparisons, and measurements. While using the simple aircraft on science subject. Stem (science, technology, engineering, and mathematics) was used in didactic design to create a didactic situation that aimed students to build a simple plane where the students used their mathematic skills. The goal of this research was to improve 21st century skills, including; critical thinking, creative thinking, problem solving, communicating and network building. Didactic design was a learning program that contained a didactic situation, hyphotetical learning trajectory, students response, and anticipation of students response. This research was conducted on three didactic designs. In the first design, students planed problem solving by designing a simple tool based on provided materials, the needs and the lowest price. In this process students used the concept of integer count and measurement operations. In the second didactic design, students constructed a simple tool and examined it in several situations, then calculated the advantages and disadvantages. In the third didactic design, students designed a larger tool based on a proven model where in the process students used the comparison concept. The first didactic design, which was implemented then was revised based on the findings in the learning process. Based on the observation and analysis of learning result, this didactic design could improve students skills on critical thinking and creative thinking. Students could solve the problem during learning process where the students worked together and communicated. Students could also use their mathematic skills in solving problems in a social context.

Keywords
STEM, Math and science education, 4C ability, didactics design

Topic
Mathematics Education

Link: https://ifory.id/abstract/hHMm9n6rpBE3

Corresponding Author
Jamilah Jamilah

Institutions
(a)Program Studi Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
* jamilah.mtk2002[at]upi.edu
(b)Program Studi Pendidikan Matematika, Fakultas Pendidikan Matematika dan IPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
A study was conducted to analyze didactic transposition processes that occur in the concept of empty sets. This research is a hermeneutic phenomenology research and is based on didactic transposition theory. Didactic anthropology theory is used as a theory used to analyze didactic transposition processes in a praxeological framework. One math teacher and fifteen students became participants in this study. Scholarly knowledge from mathematic textbooks, curriculum and school mathematics textbooks, teaching and learning documents, student learning outcomes, and the results of interviews with teachers and students became the source of data in this study. The results of this study indicate that the concept of empty sets taught in schools has been presented in accordance with scholarly mathematical concepts. However, the concept has not been presented in accordance with the cognitive conditions of students.

Keywords
Didactic Transposition; Empty Set

Topic
Mathematics Education

Link: https://ifory.id/abstract/jZwJQz7m2YWK

Corresponding Author
Lina Sunariah

Institutions
1) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*minds3not[at]gmail.com

Abstract
This study intends to investigate didactical and epistemological obstacles that occur when students solve the problem on the topic of geometry transformation. The data were collected from students- answer and interviews of 16 ninth graders and 16 twelfth graders when solving the test instrument used is five contextual problems and three problem description of geometry transformation. The data analysis reveals that most students have difficulty identifying contextual problems related to geometry transformation; not quite firm to know the characters from each type of geometry transformation (reflection, translation, rotation, and dilation); use procedural knowledge rather than conceptual understanding; and forget about the previous material related to geometry transformation. These findings are expected to overcome learning didactical and epistemological obstacles in teaching and learning of geometry transformation.

Keywords
Didactical obstacle; Epistemological obstacle; Geometry Transformation

Topic
Mathematics Education

Link: https://ifory.id/abstract/CaKwx9DJPfYT

Corresponding Author
Devita Marlina Venessa

Institutions
a)Masters in Chemistry Education, Postgraduate School, Indonesian University of Education, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
* dy2psihite[at]gmail.com
b)Department of Chemistry Education, Indonesian University of Education, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The purpose of this study was to determine the difficulties faced by pre-service chemistry teachers in correlating the structures with physicochemical properties of ionic liquids. The descriptive research method used in this study is presented quantitatively and qualitatively. The participants in this study were 23 pre-service chemistry teachers from one of the universities in Indonesia. Data collected using an instrument in the form of a description that contains discourse on ionic liquid technology. In general, the results of the study indicate that more than half of the students have difficulties in applying chemical concepts related to the context of the relationship of structures with physicochemical properties of ionic liquids. The result also reveals that the most dominant difficulty experienced by pre-service chemistry teachers difficult to specify chemical concepts related to the tendency of differences in melting point of molten salt and ionic liquids. The results findings will be used as the basis for developing didactic designs that are oriented to resolve learning obstacles by pre-service chemistry teachers in understanding the relationship of structures with physicochemical properties of ionic liquids.

Keywords
difficulties; ionic liquid; pre-service chemistry teachers;

Topic
Chemistry Education

Link: https://ifory.id/abstract/b7tf9WrFVnAx

Corresponding Author
Nur Ayni

Institutions
a) Departement of Mathematics Education, Universitas Swadaya Gunung Jati, Jl. Perjuangan No. 1 Cirebon 45134, Indonesia

Abstract
This research was encouraged by students low mathematical representation ability with the findings of problems in the three-dimensional material of junior high school and the limited text books which povided by the teachers or students during the teaching and learning process, and the non technology-based teaching such as the developed digital teaching materials. The development of teaching materials which recently caried out is still in the form of conventional teaching namely printed-teaching materials. Whereas, the use of printed teaching materials in the three-dimensional subject is considered to be less to facilitate students geometry visualization ability. One of the solutions that can be carried out to overcome these problems is developing 3-dimensional digital teaching materials based on the ability of mathematical representation in the three dimensions material of junior high school which is valid and practical. This research is a kind of development research by using the ADDIE model namely Analysis, Desain, Development, Implementation, and Evaluation. This teaching material was validated and tested for practicality. So, it can be concluded that digital teaching material can be used in the teaching and learning process and it was easy to use by students.

Keywords
Digital Book; Mathematics; ADDIE

Topic
Mathematics Education

Link: https://ifory.id/abstract/NhR4Tqr7FPKx

Corresponding Author
Siska Nerita

Institutions
Biology Education STKIP PGRI Sumatera Barat, Jalan GUnung Pangilun Nomor 4 Padang

Abstract
The research team has developed handout based on guided disovery method in process evaluation and learning outcomes of biology subject. Development has resulted handout that valid, practical, effective, and disseminate stage will be carried out. The disseminate stage is done at Program Studi Pendidikan Biologi Sekolah Tinggi Keguruan dan Ilmu Pendidikan Ahlussunnah Bukittinggi, Sumatera Barat. This study aims to determine student learning motivation by using products that have been developed. This is a development research using a 4D model, which is in the disseminate stage. The instrument used is student learning motivation questionnaire. The questionnaire was filled out by students of Program Studi Pendidikan Biologi STKIP Ahlussunnah who have taken the course of process evaluation and learning outcomes of biology subject as many as 20 students, and the data is processed using a percentage formula. The results showed that the average student learning motivation after using the handout was 81,18% (very effective). It can be concluded that at the disseminate stage, handout based on guided discovery method in process evaluation and learning outcomes of biology subject have been effectively seen from student learning motivation.

Keywords
disseminate, handout, student learning motivaton

Topic
Biology Education

Link: https://ifory.id/abstract/BzucECKbG4M6

Corresponding Author
Kadek Dwi Hendratma Gunawan

Institutions
Universitas Pendidikan Indonesia

Abstract
Integrated science should be master the subdisciplines of science holistically, but there were some science contents- difficulties that held. This study aims to describe the distribution of difficulties in science content that included physics science, biology science, chemistry science, and earth and space science. Qualitative descriptive was used to analyze data. Data were collected using closed questionnaires. The results revealed that there was some various distribution in difficulties on science content due to differences in the scientific background of pre-service and in-service science teacher. The distribution of that will be used as domain knowledge to develop artificial intelligence media.

Keywords
difficulties in science content, artificial intelligence

Topic
Science Education

Link: https://ifory.id/abstract/fKcmzjxe7Tyv

Corresponding Author
Rina Hidayati Pratiwi

Institutions
Unindra

Abstract
The Neesia altissima (Blume) is an evergreen tree that may exceed the height of 40 m, in the old specimens in nature, with erect trunk, of up to more than 1.2 m of diameter, with slightly grooved bark of greyish brown colour. In this study, we identified diversity and biopotential of Neesia altissima Bl. in Indonesia. Neesia altissima Bl. is a large tree (grows up to + 40 m) and distributed primarily in the primary rainforests of Malaysia and Indonesia (Sumatera, Borneo, and Java islands). In Indonesia, this endemic plant is used medicinally for treatment of gonorrhea, diuretic and diarrhea. The fruits are locally utilized in the traditional medicine as diuretics and together with the leaves, in treating the gonorrhea. Because the plant having such an important medicinal value and having endangered status, so studies on microbial endophytes from N. altissima in relation to discovery of alternative secondary metabolites are very important. Therefore, it is important to explore endophytic bacteria from endemic medicinal plant such as N. altissima, and screened their potential in producing antimicrobial compounds. The pharmacological potential of Neesia altissima Bl. and the genus Neesia in general is as of yet unexplored.

Keywords
endemic, Neesia altissima, medicinal, secondary metabolites

Topic
Biology Education

Link: https://ifory.id/abstract/8QDc4pbwe2Zk