Indonesia Conference Directory

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
Hanifah Kurnia Muchtar

Institutions
a)Departemen Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia.

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

Abstract
The purpose of this study was to produce information about assessment instruments quality to assess chemical literacy of high school students in solution material developed by researcher. Research method used was descriptive with quality parameters tested were empirical validity, reliability, readability, distinguishing power, difficulty level and distractors function. Research participants were 26 high school students class XI in Bandung. Chemical literacy assessment instrument that were tested consisted of 42 multiple choice items, 12 essay items and 26 attitude scale statements. Study results showed: (1)Empirical validity values of multiple choice questions, essays and attitude scale respectively in range 0.11-0.87, 0.4-0.8, 0.1-0.74; (2)Reliability values for multiple choice questions, essays and attitude scales respectively 0.93, 0.87, 0.94; (3)Readability test scores for multiple choice questions, essays and attitude scales respectively 97%, 99%, 100%; (4)Results of distinguishing power test for multiple choice questions and essays were in range 0.07-0.85, 0.3-0.8; (5)Difficulty level test results for multiple choice questions were 16% difficult category, 61% moderate category, and 23% easy category while for essay questions were 9% difficult category, 75% moderate category, and 16% easy category; (6)Distractor function test results for multiple choice questions were distractors of 12 questions that need to be fixed.

Keywords
Chemical literacy assessment instruments; Difficulty level; Distinguishing power; Distractors function; Empirical validity; Readability; Reliability

Topic
Chemistry Education

Link: https://ifory.id/abstract/FXCUgKEzkmq7

Corresponding Author
Nurma Yunita Indriyanti

Institutions
Chemistry Education Department, Universitas Sebelas Maret

Abstract
This study aims to: (1) have a profile of students scientific reasoning of high school students in science program; (2) to investigate the relation of students scientific reasoning ability with understanding of chemical triangle representation of students on salt hydrolysis topic of grade science program in High School. This research used descriptive qualitative method. In this research, there are five levels of scientific reasoning: level No Response, Non-normative, General Descriptive, Bronsted Mechanistic and Bronsted Causal. Students scientific reasoning was measured using open-ended test. The determination of each level was determined by two ratters using the Cohen-s Kappa formula, in which the results of reliability for scientific reasoning, 0.95. Participants of this study as many as ninety 10th grade students in one public high school in Surakarta, Indonesia. Data collection techniques include written test, observations and interviews. Based on the results of the study showed that, (1) Profile of students scientific reasoning at General Descriptive level of 40%, Non-normative level of 33%, Bronsted Causal level of 26%, Response level of 1% and Bronsted Mechanistic level of 0%. The most of students have General Descriptive level, where the students- answer is only at the "What" stage hydrolysis occurs in general or using Bronsted-lowry theory. (2) not all levels of scientific reasoning have a understanding of the overall triangle representation (M-SM-S), but the understanding the overall chemical triangle representation (M-SM-S) can inducing good scientific reasoning.

Keywords
scientific reasoning, high school students, chemistry representation

Topic
Chemistry Education

Link: https://ifory.id/abstract/ykAbN9GM2g8v

Corresponding Author
Abhisatya Amrih Raharja

Institutions
Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia

Abstract
This paper is aimed to describe the environmental attitude for high school students on the topic of buffer solution. The environmental attitude is one of the attitudes in the 18 values of the Indonesia National Character Education which is still very less applied in schools even though it is urgently needed for the environment sustainability. Buffer solution is one of the topic in chemistry that rarely linked with the environment even though actually it has a very large influence in the environment. Therefore, this paper is to describe how the environmental attitude that students have on the topic of buffer solution. The participants of this study were 68 students. In this paper qualitative methods were used by giving questionnaires to students. From the results obtained, most of the students still lacked a good environmental attitude on the topic of buffer solution, even though the students actually wanted to explore ways to maintain the environment.

Keywords
Environmental attitude; Buffer solution

Topic
Chemistry Education

Link: https://ifory.id/abstract/NbdvHh46QerT

Corresponding Author
Elza Rachman panca priyanda

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

2,3 Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

* elzarachman95[at]upi.edu

Abstract
Abstract. This study aims to analyze senior high school students- View of Nature of Science and Technology. The participants include 25 senior high school students in one school in Bandung, Indonesia. The VNOST questionnaire consists of 8 multiple-choice items including four aspects: definitions of science and technology, epistemology of science, internal sociology of science, and external sociology of science. Students responses to the questionnaire were analyzed using frequency distribution to characterize trends in students views. The results showed that most of the students answers belonged to the Has Merit category, which was 46.5% but there were still few students who had a realistic view of 30% and 23.5% of the students answers still included the Naïve category. This study shows that generally senior high school students do not yet have an appropriate view of the nature of science and technology. This study is very important for teachers to see VNOST in science learning.

Keywords
senior high school students and View of Nature of Science and Technology

Topic
Chemistry Education

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

Corresponding Author
Yosi Gumala

Institutions
1Program Studi Pendidikan Dasar, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229 Bandung 40154, Indonesia
2Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229 Bandung 40154, Indonesia
3Departemen Pendidikan Guru Sekolah Dasar, Universitas Bhayangkara Jakarta Raya, Jl. Darmawangsa 1 No 1 Jakarta 12140, Indonesia
4Prodi Pendidikan Guru Madrasah Ibtidaiyah, IAIN Tulungagung, Jl Mayor Sujadi No. 46 Tulungagung, Indonesia
5Prodi Pendidikan Guru Sekolah Dasar, STKIP Sebelas April, Jl Angkrek No. 19 Sumedang 45323, Indonesia
5Prodi Pendidikan Guru Sekolah Dasar, Universitas Syiah Kuala, Jl Tgk Hasan Krueng Kalee Banda Aceh 23111, Indonesia

Abstract
Assessments are prevailing implements for informing teachers and students approximately where student thoughtful stances with relation to a knowledge objective. However, limited readings deliver qualitative investigates of assessment through an item. This research practices a context of nine scopes of actual assessment evidence in science classrooms to associate more and fewer effective assessment among a purposive sample of elementary pre-service teacher in science. Contributing teachers collected five steps of assessment in reading, answering discussing, explaining, and creating related on problem solving skill. Our evaluation specified that actual dimensions, such as setting goals, aligning assessments with goals, occurrence, and selection of assessment, can be addressed relatively easily by teachers whose overall collection. Yet, dimensions that takings interested in account the quality or depth of student learning, such as the cognitive difficulty of the assignment, the type of response that is providing, or how well teachers adapt instruction based on information from assessments, differ more pointedly among teachers in our model. The conceptualization of these five dimensions beside with indication from actual classrooms across following instructional parts for professional improvement and teacher education

Keywords
RADEC, Science, Assessing, pre-service teacher

Topic
Chemistry Education

Link: https://ifory.id/abstract/KVTfvtMAm4Db

Corresponding Author
Resti Yulianti Hidayat

Institutions
a) Departemen Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*restiyuliantihidayat[at]upi.edu
b) SMA BPI 1, Yayasan Badan Perguruan Indonesia, Jl. Burangrang No. 8, Bandung 40262, Indonesia

Abstract
Collaborative skills are skills that must be possessed by each student in accordance with the demands of the 2013 curriculum. The purpose of this research is to identify students- collaborative skills through learning sharing and jumping task on the topic of redox reactions. The research was conducted at one of the schools in Bandung in class X.4. This research used descriptive analysis method. The data was obtained through recording and observating. Transcript Based Lesson Analysis (TBLA) was used to analyze the transcripts. Based on the analysis result of seven indicators of collaborative skills consisting of listening to others well, being able to speak and argue, respecting the others opinions, working together to solve problems, sharing the tasks with group members, showing care of friends having trouble, being able to guide the others to achieve goals, showing good appearance. The first indicator is the most frequently identified indicator and the fifth indicatos is the identified indicator which is lower than the other indicators.

Keywords
Collaborative skills, sharing and jumping task, redox reaction

Topic
Chemistry Education

Link: https://ifory.id/abstract/9eaHL6MTwD8Q

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
Annisa Mailia Ulfa

Institutions
Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia

Abstract
Abstract. In recent years, many studies have shown that chemical reactions are concepts that are difficult for students to understand so they can cause misconceptions. The purpose of this study was to determine the conceptions, threshold concepts and troublesome knowledge in chemical reaction from previous studies and from interviews with chemistry teachers. This study uses qualitative methods and document analysis. Based on analysis of journals and interviews, there are a number of correct concepts, namely: atomic reorganization, breaking and reformation of bonds, and changes in physical or chemical properties. While students misconceptions in the chemical reaction material consist of: ion compounds formed from cations and molecules, cations will bind to negatively charged atoms and vice versa, compounds in solution will be neutral or molecular atoms, and write ions with the wrong charge. Meanwhile, threshold concepts consists of: concept of mixture, physical and chemical properties, material changes, concepts of protons and electrons, electron configurations, forces between molecules, chemical formulas/chemical symbols, chemical bonds, nomenclature of chemical compounds, ionic charges, and Lavoisier law. While troublesome knowledge consists of: the complexity of the particles involved, the complexity of interactions that may occur, the complexity of applying Lavoisiers Law, and the language used.

Keywords
conceptions, threshold concepts, troublesome knowledge, chemical reaction

Topic
Chemistry Education

Link: https://ifory.id/abstract/R6zT7ZGtpmkM

Corresponding Author
Euis Nursaadah

Institutions
Universitas Bengkulu
Universitas Sultan Ageng Tirtayasa

Abstract
Chemistry learning needs an assessment to evaluate ways of students- thinking. One of them is a critical thinking skill test. The purpose of this study is designing domain-specific critical thinking skill on thermochemistry concept. Content Validity Ratio (CVR) and Confirmatory Factor Analysis (CFA) were evaluated to analysis the validity of the instrument. Cronbach-s Alpha were evaluated to analysis the reliability. Descriptive method was used as a research design. The participants of this study are 185 senior high school students in Cilegon-Banten-Indonesia. Data are obtained from expertise judgment, empirical test, and interview. The results showed that the quality of instruments of domain-specific critical thinking skills on thermochemistry concept based on CVR and CFA is 0,723 (good criteria). Cronbach-s Alpha test showed 0,652 (high criteria). It can be concluded that instrument is feasible to measure students- critical thinking skills on thermochemistry domain knowledge.

Keywords
Domain-Specific Critical Thinking Skills, Thermochemistry

Topic
Chemistry Education

Link: https://ifory.id/abstract/qRm6JhTPMjCY

Corresponding Author
Alin Mardiah

Institutions
a) Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta 13220, Indonesia
b) SMA Labschool Cibubur, Jl. Raya Hankam Kampus Labschool No. 15-20, Jatiranggon, Kota Bekasi, Jawa Barat 17432, Indonesia

Abstract
This study aimed to develop 22nd century skills through the integration of STEAM project in chemistry learning. The study involved the thirty three of year-11 students. The STEAM integration was implemented in the teaching of colloidal system through a project-based learning. The research employed a qualitative approach to explore the integration of STEAM in chemistry and students- 22nd century skills development. Data were collected through classroom observations, interviews, reflective journals, and chemistry concept test. Students designed an innovation project with the integration of STEAM in developing smoke absorber as the solution of the smoke pollution occur now a days. The study results were analysed based on the pattern themes found in multiple data sources. It shows students developed their critical thinking, creativity, collaboration and communication skills, then caring of environmental problems (5C), in addition to information, media, and technology skills. The study face challenges of integrating STEAM in chemistry learning with in empowering student, time resources and also to provide the contextual learning to raise the students- environmental awareness need to be explored

Keywords
Chemistry Learning; Colloidal System; STEAM; 22nd Century Skills

Topic
Chemistry Education

Link: https://ifory.id/abstract/N6ckAWrpvmgz

Corresponding Author
Iva Alfiani Zakiah

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

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

Abstract
The purpose of this study was to develop an instrument performance assessment tasks and rubrics in conventional titration (asidi-alkalimetri, argentometry, permanganometry, complexometry, iodometry). The Instrument has several skills, they are weighing, making solution, titrant preparation, pipette, and titration. This study using four phases based on Development and Validation methods are: preliminary study, instrument development, validation, and field testing. Phase 1, describe purpose of study and identification titration skill. Phase 2, development tasks and rubrics for assess performance of students. Phase 3, instrument was validated by five validators and then instrument was revised and modified become valid instrument with CVI=0.98. Phase 4, field testing was conducted at Vocational School Chemical Analysis program in Bandung with 30 students were divided into three groups assessed by four observers using the inter-rater method with statistical measurements are Intra-class correlation coefficient (ICC) and Krippendorff-s alpha (Kalpha). First group consisted five students has reliability value are ICC=0.92 and Kalpha=0.96, second group 10 students has reliability value are ICC=0,85 and Kalpha=0.80, and third group 15 students has reliability value are ICC=0.75 and Kalpha=0.66. Result of data analyisis can be concluded instrument has been developed are valid and reliable. Reliability in small group has higher than other group.

Keywords
Titration conventional, performance assessment, task and rubric, inter-rater

Topic
Chemistry Education

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

Corresponding Author
Army Auliah

Institutions
Universitas Negeri Makassar

Abstract
The importance of improving the quality of learning in schools is more and more recognized. Now day Green Chemistry is recommended in teaching chemistry as an effort to foster students caring attitudes towards the environment. In other hand improving teaching quality through lesson study has been done a lot. This paper contributes to the solution of problem of improving the quality of chemistry teaching that foster students caring attitudes towards the environment. The integration of the principles of green chemistry through the application of the principles of Lesson Study learning community that allows the principles of green chemistry be understood and applied by students in their daily lives, results a Teaching model called Green Chemistry Learning Comprehensive by Collaborative and Collegialities (GCLC2C) that has been developed and validated. Key words: Chemistry Teaching Model, Lesson Study, Green Chemistry

Keywords
Chemistry Teaching Model, Lesson Study, Green Chemistry

Topic
Chemistry Education

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

Corresponding Author
Ferli Septi Irwansyah

Institutions
a) Department of Chemical Education, UIN Sunan Gunung Djati Bandung, Indonesia
*ferli[at]uinsgd.ac.id

Abstract
The understanding of students in the process of forming covalent bonds needs to be overcome by using interactive media. For this reason, research has been carried out using a Design-Based Research (DBR) method. The stages of this study consisted of wall analysis and the development of trial design validation and feasibility tests. The overall validation test results were obtained from 0.80-0.96 and declared valid, while the feasibility test results obtained a percentage of feasibility 83.33-97.50%. The percentage shows that AR learning media in the formation of covalent bonds based on valence bond theory is worthy of being used as a learning medium.

Keywords
augmented reality; chemical learning media; valence bond theory; hybridization

Topic
CHEMISTRY EDUCATION

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

Corresponding Author
Istiqomah I

Institutions
a. SMK Amaliah Ciawi
b. Program Studi Pendidikan IPA Program Pascasarjana Universitas Pakuan

Abstract
This study aims to produce formaldehyde teaching aids to increase the interest in learning and chemical literacy of Vocational School students majoring in Multimedia. Pre-experimental research was conducted to test the effectiveness of formalin test props with research and development (R & D) methods with Four D research designs (Definee, Design, Development, and Deseminate). The props were validated by three lecturers, namely media experts. The research subjects were 30th grade students as many as 30 people at Amaliah Ciawi Vocational High School. Data was collected using expert validation sheets, chemical literacy tests, and student response questionnaires. The data obtained were analyzed using quantitative descriptive statistics. The results of the development show that teaching aids increase student learning interest and chemical literacy students obtain N-gain of 0.70 and 0.71 in the high category. These results indicate that the formalin test props are effective for increasing students interest in learning and chemical literacy.

Keywords
formalin test equipment, student learning interest, student chemical literacy

Topic
CHEMISTRY EDUCATION

Link: https://ifory.id/abstract/TwZqzN7ADyY6

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
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
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
Yusran Khery

Institutions
*IKIP Mataram,Jalan Pemuda 59 A, Mataram, Indonesia

Abstract
The aim of this research was to evaluate how Understanding Nature of Science (NOS) play role to students Conceptual Understanding and Science Process Skills on Chemistry Classroom. This descriptive research was carried out by Ex-post Facto method at the Faculty of Mathematics and Science Education of IKIP Mataram. The research subjects were 75 students participating in the General Chemistry course for the academic year 2018-2019 that taken by the saturated sampling method. Data were collected by understanding NOS questionnaire, Concept Understanding Test, and Science Process Skills observation sheet. The data is described and analyzed by product moment correlation test and One Way Anova test for uncorrelated samples. The results showed that there was a significant and very strong correlation between Understanding NOS and Conceptual Understanding and between Understanding NOS and Science Process Skills. One Way Anova test result showed that there was difference on Students Conceptual Understanding and Science Processes Skills on different Understanding NOS

Keywords
Understanding NOS, Conceptual Understanding, and Science Process Skill

Topic
Chemistry Education

Link: https://ifory.id/abstract/Lym9hNpwzeqQ

Corresponding Author
ARI SYAHIDUL SHIDIQ

Institutions
Science Education Department, Postgraduate School, Universitas Pendidikan Indonesia, Bandung, Indonesia

Abstract
Education must be able to connect technology advances, the industry and learning in the classroom. These include advances in the fields of chemistry and chemical education to teach students to be able to contribute to solving problems and sustainable development in the future. Chemical education is considered to have a central role in education for sustainable development. For this reason, we need a concept in a chemical education curriculum that can support sustainability. System thinking in chemistry education is relevant to sustainability. Through system thinking, students are challenged to holistically understand the scientific process. This study aims to review the literature on systems thinking and sustainability in chemical education. A total of 9 articles from reputed international journals were the main sources for review. The results of the literature study conducted were the implementation of the system thinking in a chemical education curriculum was a potential thing. The relationship between sustainability and systems thinking were discussed

Keywords
Education for sustainable development, System thinking, Chemistry education curriculum

Topic
Chemistry Education

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

Corresponding Author
Indah Karina Yulina

Institutions
Universitas Pendidikan Indonesia

Abstract
HPLC Simulator is a learning application that can be used to facilitate students in understanding system and how to work HPLC instrumentation systematically. This application can be used all over Windows which has 32 bit operating system. The purpose of this research is to potrait how effective the use of HPLC Simulator in practicing students analytical thinking skills. Instruments in this study used test and non test instruments in the form of student satisfaction questionnaire. The results show that the use of HPLC simulators academically assist students in understanding the system and workings of HPLC but has not trained students in analytical thinking.

Keywords
HPLC simulator, analytical thinking skills

Topic
CHEMISTRY EDUCATION

Link: https://ifory.id/abstract/HJRyGN87KPdT

Corresponding Author
Dewi Nurdiyanti

Institutions
1Program Studi Pendidikan Ilmu Pengetahuan Alam, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung, Indonesia 2Program Studi Pendidikan Kimiaa, Universitas Muhammadiyah Cirebon, Jl. Tuparev No. 70, Cirebon, Indonesia

Abstract
Concept mastery is considered as a requirement that must be possessed by chemistry teacher candidates to teach the students about chemical concepts. The aim of this study is to improve the students concept mastery in electrochemistry through school chemistry subject by conducting a modified WtT approach. The study involves twenty students in the fifth semester who commit the subject of school chemistry. The data are obtained through test of concept mastery to obtain information about the concept of mastery of before and after learning. Then, the data are carried out from interview to obtain information about the students- responses in related to the implementation of WtT approach in the learning process. The data analysis is accomplished thorugh the N-Gain test to discover the improvement of the implementation of concept mastery and effect size test for paired t-test to determine its effectiveness. Meanwhile, the results of interview are utilized to strengthen the data of concept mastery. The results of the present study reveal that there is an average improvement of the students- concept mastery. Furthermore, the result of effect size test shows that the WtT approach is considered to be effective to improve the students- concept mastery in the average level.

Keywords
Concept mastery, electrochemistry, writing to teach

Topic
CHEMISTRY EDUCATION

Link: https://ifory.id/abstract/NakbA8CXKZFr

Corresponding Author
Istianah Nusorudin

Institutions
Universitas Negeri Jakarta

Abstract
Abstract: This paper portrays research into an innovative curriculum project of dilemma stories which was conducted at a secondary school in Indonesia, 10 graders with 60 students. The research focused on the integration of Number Head Together in dilemma stories approach for students engagement in Organic Chemistry learning. Dilemma stories on the topics of formaldehida, alcoholic drinks, paracetamol drugs, and butter and margarine were developed in this research study. A qualitative approach was implemented with multiple methods including interviews, reflective journals, and classroom observations. The results of the research showed the effects of this innovative approach on students- development of their critical thinking, creative thinking, emphatic communication skills, problem-solving skills, sense of responsibility, communication skills, religious attitude, argumentation skills, and confidence. Students learnt to solve the dilemma problems in real situations. The teacher became involved in this innovative approach for engaging students and improving their learning quality. In conclusion, the dilemmas stories approach has engaged the teacher and students in meaningful chemistry learning experiences. Keywords: Dilemma stories, Organic chemistry, Numbered heads together

Keywords
Dilemma stories, Organic chemistry, Numbered heads together

Topic
Chemistry Education

Link: https://ifory.id/abstract/ZTHGfRKxq8rB

Corresponding Author
Dian Mustikasari

Institutions
(1) Pendidikan Kimia, Sekolah Pascasarjana Universitas Pendidikan Indonesia
Jl. Dr.Setiabudi No.229, Bandung, 40154, Indonesia
(2)Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia

Abstract
The aims of this study is to examine the views of nature of science and technology (VNOST) of the pre-service chemistry teacher. The participants comprising 23 6th semester students of one of the state universities in Semarang, Indonesia. This study utilized a questionnaire and qualitative approach to gathering data. The NOST questionnaire consisting of eight multiple choice items comprising of four aspects: definitions of science and technology, the epistemology, the internal sociology of science, and the external sociology of science. It was found that 78% of the students had incomplete but legitimate views on the definition of science. They only viewed science as a study of principles, laws, and theories in biology, physics, and chemistry or body of knowledge without considering the scientific process behind it. Meanwhile, the remaining 22% consider science includes an investigative process and the process of resulting knowledge. Generally, the majority of the pre-service chemistry teachers still have lack comprehension on defining science and technology both epistemologically and sociologically. Thus, it can be concluded that pre-service chemistry teachers still need to improve their views of the nature of science and technology.

Keywords
Nature of Science and Technology; Pre-service Teacher; Scientific Literacy; Chemistry

Topic
Chemistry Education

Link: https://ifory.id/abstract/hNC3bzVMG7kX

Corresponding Author
mian maria stephanie

Institutions
a) Departemen of Chemistry Education, FMIPA, University State of Jakarta
Jl. Rawamangun Muka, Jakarta Timur, 13220, Indonesia
*maria.paristiowati[at]unj.ac.id

Abstract
The use of renewable material with safe solvents to extract natural indicator of jambolan fruit peels as a substitute for synthetic indicators has been carried out. The results of measuring the absorbance value at wavelength 507-528 showed that the jambolan fruit peels was extracted optimally in the solvent mixture double distilled water:ethanol with a ratio of 1:2 at pH 2. The results of maceration then extracted in two different solvents (n-hexane and chloroform). Testing extract using various pH solutions showed indicator of jambolan fruit peels showing discoloration red at pH 1-2, fades from pH 3-7, purple at pH 8, green pH 9-11 and yellow at pH 12-14. Testing with the titration method shows that the volume of the titration endpoint using natural indicator is not much different from the PP and MM indicator. The data generated in this study indicates that extract of jambolan fruit peels can be used as a substitute for synthetic indicators as the implementation of ESD concept at school.

Keywords
Jambolan fruit, acid-base indicator, education for sustainable development

Topic
Chemistry Education

Link: https://ifory.id/abstract/eVR6m3kXuTUK

Corresponding Author
Bertha Yonata

Institutions
Universitas Negeri Surabaya

Abstract
First year undergraduate chemistry education study program students come from high schools in various regions in East Java. In this study, students conceptions of the concept of atomic and periodic system elements were obtained with a three-tier test instrument. Students choose one of the 5 answer choices, choose one of the 5 reasons provided, and determine the level of confidence in answering the question. As many as 31 Chemistry education students filled 3 questions related to the concept of atomic concepts and the periodic system of elements. The data obtained shows that there are still students who experience misconceptions and ignorance of the concept of the atomic concept and the periodic system of elements.

Keywords
atomic concept, concept of periodic system elements, three tier test

Topic
Chemistry Education

Link: https://ifory.id/abstract/6gME4F9BxAH7

Corresponding Author
Amaliyyah Mahmudah

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

*amaliyyahm[at]upi.edu

2,3 Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The purpose of this study to identify misconceptions by measuring the level of students understanding in chemical bonding topic using four-tier multiple choice diagnostic test. The research method is descriptive and the stages are carried out as follows; validity judgement test with CVI value of 0,98, proceeding with a preliminary test on 30 islamic senior high school students in South Tangerang with cronbach alpha reliability (α = 0,663) for answers, (α = 0,610) for reasons, (α = 0,693) for confidence level of answer, and (α = 0,652) for confidence level of reason. This study is conducted at tenth grade senior high school in South Tangerang among 77 students. The results of data analysis shows that the overall percentage of students misconception on chemical bonding topic is 15,14% (low category). The level of confidence in this study is highly significant because it can provide information about conceptual understanding of the students. Students encounter the most misconceptions when determining bonds in microscopic. As evidence, misconceptions in the concept of determining microscopic ionic and covalent bonds results to 41,56% (medium category), and metal bonds with 37,66% (medium category). This misconception is due to the students having limited conceptual knowledge and low visual-spatial abilities.

Keywords
Misconceptions, Four tier diagnostic test and Chemical bonding.

Topic
Chemistry Education

Link: https://ifory.id/abstract/rXUqxa2zRpuC

Corresponding Author
Yuli Verawati

Institutions
a) Departemen Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*yuli.verawati27[at]gmail.com
b) SMA BPI 1, Yayasan Badan Perguruan Indonesia, Jl. Burangrang No. 8, Bandung 40262, Indonesia

Abstract
The aim of this research was to identify collaborative skills students that appear through implementation of the design learning sharing and jumping task on salt hydrolysis topic. This research was conducted at one of the schools in the city of Bandung in class XI. The research method uses descriptive analysis method. The research data was obtained through recordings and observations. Analysis of research data uses Transcript Based Lesson Analysis (TBLA). Indicators of collaborative skills studied consist of ask friends or teachers when they do not understand, able to speak or argue, appreciate and respect to others, collaborate to solve the problems, share assignment fellow group members well, show concern for friends, able to guide others to achieve goals. The results of the research show that the seven indicators were identified during the learning process. Indicators asking friends or teachers when they dont understand are the indicators most often identified during learning, while share assignment of fellow group members properly get lowest identified than the other indicators.

Keywords
Collaborative skills; Sharing and jumping task; Salt hydrolysis

Topic
Chemistry Education

Link: https://ifory.id/abstract/WjL2HYreGkm4

Corresponding Author
Khaidir Wijaya

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

*khaidirhamka19[at]upi.edu

2,3 Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
This study aims to identify students preconceptions about the artificial muscle context as a basis for developing didactic designs in learning the artificial muscles context and its relevance with chemical content in Senior High Schools. This study uses a descriptive method presented quantitatively and qualitatively, using essay tests which number 20 items related to 7 discourses about artificial muscles. Participants in this study were 28 students from one of the Senior High Schools in the city of Bandung. The results of data analysis showed that 71% of students had preconceptions that are low in understanding in the form of students- low understanding in linking their chemical concepts with artificial muscle context. The results of this preconception identification will be used as a consideration in developing didactic design with the aim of connecting the artificial muscle context as an application of science and technology to chemistry learning in schools.

Keywords
Preconception, Artificial muscle context, Didactic design

Topic
Chemistry Education

Link: https://ifory.id/abstract/L6XMNxGEpmqu