bluuebunny/crossref_metadata_2025 huggingface dataset:
Integrated learning for improving environmental literacy in high schools
Authors: Roshayanti F , Wicaksono A G C , Minarti I B , Nurkolis
Published: May 2020

The environmental issues that happened in the northern part of Central Java are getting worse. Human activity is believed as the main factor of environmental damage. The effort to change the young generation’s perception, awareness, and action about the environment through education will become the best way to fix these challenges. This research is aimed to develop environmental literacy-integrated learning in high schools and to improve student’s environmental literacy. This research use mix method with a qualitative approach to examine the quality of environmental literacy-integrated learning. Then, the quantitative approach also used with quasi-experimental with pre-test post-test Non-equivalent Control Group Design to measure the effect of environmental literacy-integrated learning. This study involved 34 students both in the experimental and control class. The instrument used in this study is Middle school environmental literacy surveys (MSELS) questionnaires and observation sheets. The qualitative data is also used to evaluate the implementation of environmental literacy-integrated learning. The result shows that environmental literacy-integrated learning gives a positive impact on student’s comprehension in all environmental literacy aspects. In addition, the statistical analysis also shows significant value as 0.000 (p< 0.05). This result indicates that environmental literacy-integrated learning can improve student’s environmental literacy.
Implementation of formative assessment through oral feedback to develop 21stcentury critical thinking skills of student on plantae learning
Authors: Nurhijah S S , Wulan A R , Diana S
Published: May 2020

The challenges of 21st century globalization require students to have various skills needed in compete at the global level. One of the 21st century skills students need to have is critical thinking skills, but student’s critical thinking skills in Indonesia are still relatively low. To develop this skill, learning is needed along with appropriate assessment. The application of formative assessment in learning is one of the efforts in developing the skill. Through formative assessment, teacher can make appropriate learning strategies to facilitate student learning needs. However, the practice of assessment for learning rarely facilitates student learning needs. Thus, this study was needed for investigating the effect of formative assessment in develop critical thinking skill of students. The quasy experiment method is used in this study with the pretest posttest control group design. The experimental group was given the application of formative assessment through oral feedback during learning, while the control group was given the conventional assessment. The result showed that formative assessment through oral feedback can develop critical thinking skill of students, indicated by the experimental group has higher critical thinking skill improvement than control groups in Spermatophyta and Bryophyta chapter.
Refining student’s creative thinking through problem oriented project-based learning and student team achievement division
Authors: Supratman  , Zubaidah S , Corebima AD , Ibrohim
Published: May 2020

One of the biggest calls for educators to take part in the 21st century learning is to make sure students equipped with creative thinking. To empower these skills, a variety of effective learning models can be implemented. The current study aimed to develop a learning model that has the potential to improve student creative thinking by integrating Problem-Oriented Project-Based Learning (POPBL) and Student Team Achievement Division (STAD), hence called POPBLSTAD. Plomp design was used as the procedures for developing this product. It consisted of preliminary investigation, design, realization/construction, test, evaluation, and revision. The model was examined through a quasi-experiment. The participants’ creative thinking was evaluated based on five indicators: fluency, originality, elaboration, flexibility, and metaphorical thinking, using an essay test. The POPBLSTAD learning model was confirmed valid with a score of 3.47. The results of the ANACOVA analysis showed that the implementation of POPBLSTAD improved student creative thinking significantly. This finding suggests that POPBLSTAD can be used as an alternative learning model that is effective to refine student creative thinking.
Local wisdom integrated biology learning program as an alternative to increase generic science skills
Authors: Ramdani A , Utami S D , Efendi I , Dewi I N , Rohyani I S
Published: May 2020

The integration of the local wisdom of the Mount Rinjani community provides alternative solutions to educational problems that can be tailored to the needs of supplements and substitutions in the learning process. The Local Wisdom Integrated Biology Learning (LWIBL) Program is an innovative learning program designed to improve generic science skills and positive characters of students towards the environment. This study aims to develop and produce a quality LWIBL Program (valid in content and construct, and reliable). The main product is the LWIBL Program which is manifested in the form of the LWIBL Program Book. The quality of the LWIBL Program was obtained through Focus Group Discussion (FGD) activities using an instrument for assessing the quality of the learning programs. The quality analysis of the LWIBL Program uses average validity scores, single measure Inter Coefficients Correlation, and Cronbach’s alpha coefficient. The results show the LWIBL Program, with the average content validity of 3.51, construct validity of 3.61, the validity of each aspect statistically (ra = 1.00) and reliability (a = 1.00), meets the quality of good category. The research implication is that the LWIBL Program is declared qualified by the assessor and it can be used to improve the students’ generic science skills and positive character towards the environment.
Pedagogical content knowledge (PCK) of prospective biology teacher on respiratory system material to education for sustainable development
Authors: Hartadiyati E , Wiyanto  , Rusilowati A , Prasetyo APB
Published: May 2020

Pedagogical content knowledge is the blending of content knowledge and pedagogical knowledge (PCK) into a specialized knowledge for teaching of specific subjects. In this study, what is meant by PCK for education for sustainable Development is the integration of pedagogy knowledge, knowledge content and three aspects in sustainable development, namely social, economic and environmental together so as to create Education to achieve 17 Sustainable Development goals (SDGs). The purpose of the study was to find out preservice biology teacher’ PCK to Education for Sustainable Development in teaching the respiratory systems. This study was used by two female of prospective biology teachers who were in their final year at the undergraduate level of Biology Education. Data was collected qualitatively through documents of teaching and learning plan and observation during the learning process. Prospective biology of teachers A and B shows the ability to learn respiratory systems that support education for sustainable development. This can be seen in the framework PCK, which is a component of perspectives on economic, social and environmental that is simultaneously and harmonious, material in curriculum context, learning startegy, evaluation and learning outcomes. Leads to the sustainability of present and future life, especially those related to the respiratory system. Learning by teacher A and B aligns with the achievement of goals of Sustainable Development.
Equipping students’ research skills and logical thinking through practical work on algae topic
Authors: Sanjayanti A , Rustaman N , Hidayat T
Published: May 2020

This research was initiated by biology students’ that have difficulties in writing scientific papers so as to reduce the quality of students’ research and facilitate them to make proposals for students’ creativity program conducted by kemenristek dikti as Tridharma forms of higher education. A research using pre-experimental method was conducted to equip research skills and improve students’ logical thinking. The initial development of the practicum program was based on a preliminary study at one state university in Bandung, West Java. The study was conducted from February to April 2019 and involved 38 second semester biology students’. Data were collected through: tasks and rubrics (for reviewing articles, proposal outlines, pre-proposals, and final proposals), and TOLT. Research skills used at the scaffolded research. Data were quantitatively analyzed and qualitatively as well. The results show that the rryptogamae botany practicum program could improve students’ moderate research skills and logical thinking. In addition, it was also found that students who are in formal operation category tend to increase their research skills higher compared to those of the transitional and concrete operation categories.
Visual reading strategies and its relation to plant morphology comprehension of senior high school students
Authors: Azmi L , Rahmat A , Amprasto
Published: May 2020

One of several factors that influence students’ successfully to uunderstanding the various concepts contained in the diagram is the use of effective visual reading strategies. The results of previous studies prove that students’ comprehension of the diagram is still low, although diagrams are often used to facilitate students in understanding concepts. This was a descriptive study involving 20 high school students in Bandung. The research aims to analyze the relation between visual comprehension strategies and students comprehension toward plant morphology diagrams. The students were asked to analyze the morphological diagram of magnoliophyte plants for 15 minutes. The strategies emerge from students will be analyzed and categorized into low-level strategies, high-level strategies, and metacognitive strategies Then the students will be given questions to measure the level of comprehension after learning a morphological diagram of magnoliophyta plants. The results showed that many students did a more low-level strategy that tends to memorize, to rereads diagrams, and to text signaling. It suits to the level of student’s comprehension about plant morphology that is still in the low category. The outcome shows that knowledge of plant morphology possessed by high school students was still at the level of memorization.
The role of STEM-DSLM in facilitating students’ conceptual change and preventing misconception in life sciences
Authors: Rustaman N Y
Published: May 2020

Effort to overcome misconception had been conducted mostly using CRI and remedial teaching after having detected misconceptions and the causes of them. The focus of this study was to analyse the development of strategic teaching and learning in formal education after being detected the most often concepts misconceived by the students. One class of each level of students being engage with STEM-PjBL and DSLM in studying abstract concept in Life Sciences (Organization of Living system, Fungi, Evolution). Certainty Response Index (CRI) and Test of Logical thinking (TOLT) were used in data collection. In analysing data, the results of pre-test and post-test were analysed. It was found that nearly no misconception was found as very little students change into negative or disorientation, while students with change into positive was higher in percentage. Additionally, construction is very rare among the students, as they have learnt all the concept before. From these findings, it can be concluded that STEM-PjBL can prevent permanent misconception. Additionally, at college level Dual Situated Learning Model (DSLM) can be used in facing conflict situation to students as requirement for conceptual change to occur.
Remediation of misconception on straight line motion concept using guided inquiry model assisted by student worksheet based on science technology engineering and mathematics (STEM) on junior high school students
Authors: Taufiq M , Muntamah S , Parmin P
Published: May 2020

This study aims to remediate science misconceptions on the concept of straight line motion using guided inquiry models assisted by Student Worksheet Based on Science Technology Engineering and Mathematics (STEM). This study uses an experimental method with one shoot case study technique. The test instrument in the form of three tiers multiple choice test questions was used to identify students’ misconceptions of straight line motion concept. The results showed that students’ misconceptions on straight line motion concept amounted to 47.30%. Remediation of science misconceptions through the implementation of guided inquiry models assisted by Student Worksheet Based on STEM showed the results of students’ concept understanding in the conceptual understanding category of 58.58%, misconceptions of 25.49%, guessed 3.19%, and did not understand 12.75%. It was concluded that the application of the guided inquiry model assisted by Student Worksheet Based on STEM could be applied as an alternative learning model to remediate science misconceptions.
Improvement of student awareness on cleanliness and environmental health through stop motion video technology
Authors: Putri H E , Maraputra A N , Efna M J , Permana Y , Martiningtyas M P , Listiyanti P A , Wulandari H
Published: May 2020

The aim of research to add variety of technology-based learning media for elementary school students and knowing the effect of using Video Stop Motion technology on student awareness about hygiene and environmental health. The Research and Development (R&D) study was used in this research by adapting the ADDIE model (Analysis-Design-Develop-Implement-Evaluate). This research start from analysis step to Implement step from ADDIE model. The object of this research is Video Stop Motion technology while the subject of this research is the first-grade students of SD Labschool UPI Purwakarta Campus. Interviews and oral tests were used to collect the data. Data analysis techniques were carried out by qualitative and quantitative descriptive analysis. The results of the study show that: Stop Motion Video technology can be a technology-based learning media for elementary school students and there is the influence of using Video Stop Motion technology on students’ awareness of hygiene and environmental health.
The analysis of teachers’ readiness to develop science, technology, engineering and mathematics (STEM) based teaching
Authors: Rukoyah S O , Widodo A , Rochintaniawati D
Published: May 2020

This study aims to explore the readiness of teachers in implementing STEM learning. This was motivated by the fact that schools need to provide teachers who are able to develop learning based on Science, Technology, Engineering and Mathematics (STEM). The research method used was descriptive qualitative research involving each of the 16 teachers in the Lesson Study (LS) and STEM training program and the instrument used a questionnaire given to each teacher. This study shows that there are similarities and differences between each group with the factors that influence it. In the aspect of relevance, it was found that the two groups belonged to the very prepared category. The self-efficacy aspect of the STEM training program is better than LS, whereas in the aspect of anxiety LS is more prepared than the STEM Training group. This is influenced by the fact that the two groups are actively involved in influencing their views on STEM teaching, the STEM training program gets more collaborative learning training and knows the many obstacles in the process of implementing learning.
STEM – book on drinking water using 4S TMD models to develop students technology literacy
Authors: Mardiyya B , Anwar S , Chandra D T
Published: May 2020

This study aims to describe how to develop STEM – book on drinking water using 4S TMD models to develop student’s technology literacy. 4S TMD models consists of four stages i.e selection, structuring, characterization and didactic reduction. Developmental Research was used as method of the study consist of design, develop, and evaluation. In this article, we explain result of developed STEM – book on drinking water in selection and structuring stages. Selection stage consist of analysis science curriculum in junior high school related to the theme of drinking water, selection of concept label, selection of values that will appear in teaching material. in this book, we attempted interrelationships between students technology literacy and subject matter of science in junior high school. Structuring stage consist of make a concept maps, macro structure and multiple representation. In this paper, we only explained untill the structuring stage. Characterization and didactic reduction stages are still in the research stage.
Use of audio-visual media on training basic skills in passing and shooting in futsal sports
Authors: Nurcahya Yudi , Stiadi Dendi , Syamsudar Bangbang
Published: May 2020

This study aims to determine the effect of using audiovisual media in training basic skills in passing and shooting in futsal sports. In this study using the experimental method to 20 futsal players. Based on the results of data analysis shows that the use of audiovisual media influences on improving basic skills of passing and shooting in futsal sports. The influence is due to the use of audiovisual media the players get various examples of movements and techniques that are correct in passing and shooting. This study can be used as a reference for teachers and trainers to use audiovisual technology in the learning and training process.
Implementing finite element method in aerodynamics course to foster experiential learning
Authors: Wicaksono M T A , Widiastuti I , Pambudi N A
Published: May 2020

The study in Aerodynamics has shifted from large theoretical curriculum into authentic learning experiences in response to the industry requirement. In addition, the development of computational methods has revolutionized the design cycle in aerodynamics. This work describes an integrated approach in an undergraduate Aerodynamics course using the Kolb’s Learning cycle. Experiential learning is incorporated in the class to provide more opportunities for students to understand the theoretical concept through experiencing the applications and impact of the concept in real life. The Finite Element Method (FEM) which is widely used in analyzing many engineering problems was integrated into the Aerodynamics theory and application to visualize changes of parameter in the design phase. The main learning objective of the developed learning module is to apply appropriate aerodynamics models to predict the forces on and performance of a vehicle design. The module is assessed by instructor before being applied for the students in the classroom. It is considered to be an effective method for learning when lectures and computation works are integrated in a meaningful manner. This development research is expected to be able to produce graduates who are competent in the field of design.
Innovative organic synthesis course for sustainable development in chemistry education to enhance students’ critical thinking skills
Authors: Liliasari S , Amsad LN
Published: May 2020

This study focused on innovative learning using the framework of sustainability development in organic chemistry. A retrosynthetic analysis was used in this study in learning organic synthesis integrated with the principle of the Green Chemistry (GC) and the Critical Thinking skill (CTs). The results indicated that the sustainable developing framework can be assimilated with the learning in different disciplines. It was also found that a big impact for student’ mind set was their ability to analyse the sustainability development. It was clear that the students can improve their critical thinking skills by doing some tasks. It means that the framework of sustainability development in learning can increase the students’ critical thinking and awareness to keep the balance of the nature and their ability to deal with the global challenges in order to develop sustainability.
Analyzing senior high school students’ view of nature of science and technology (VNOST)
Authors: Priyanda E R P , Mudzakir A , Nandiyanto A B D
Published: May 2020

The objective of this study was to analyze senior high school students’ view of Nature of Science and Technology. There were 25 senior high school students participated in this study. The instruments used to collect data was a VNOST questionnaire consisting of eight multiple-choice questions. The questionnaire covered four aspects of VNOST, namely the definitions, epistemology, internal and external sociology of science and technology. Students ‘responses were analyzed using a frequency distribution for the characterization of students’ view trends. 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 did not yet employ a proper view of the nature of science and technology.
Identification of student’s collaborative skills in learning salt hydrolysis through sharing and jumping task design
Authors: Verawati Y , Supriatna A , Wahyu W , Setiaji B
Published: May 2020

The aim of this research was to identify student’s collaborative skills through implementation of the design learning based on sharing and jumping task on salt hydrolysis topic. This research was conducted at one of the schools in Bandung. The research used 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 / teachers when they don’t understand, able to speak or argue, appreciate and respect the opinions to others, work together to solve the problems, share tasks of fellow group members well, showing concern for friends, able to guide others to achieve goals. The results show that the seven indicators were identified during the learning process. Indicator asking friends or teachers when they don’t understand was the most often identified during learning, while share tasks of fellow group members well was the lowest identified indicator.
Analysis of student’s environmental attitude on the topic of buffer solution
Authors: Raharja A A , Wahyu W , Sopandi W
Published: May 2020

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.
Examining Indonesian pre-service chemistry teachers’ views of nature of science and technology (VNOST)
Authors: Mustikasari D , Muzakir A , Yuliani G
Published: May 2020

This study aims to examine the views of the nature of science and technology (VNOST) of the pre-service chemistry teacher. The participants comprised 23 6th semester students at one of the state universities in Semarang, Indonesia. This study utilized a questionnaire and qualitative approach to gathering data. The NOST questionnaire consists 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 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 of defining science and technology both epistemologically and sociologically. Thus, the results showed that pre-service chemistry teachers still need to improve their views of the nature of science and technology.
The application of scaffolding augmented reality (AR) media in the sharing task learning of electrolyte and non-electrolyte solutions
Authors: Nurrohmah S , Supriatna A , Fatimah S S , Setiaji B
Published: May 2020

This research is based on the difficulty of students in understanding the abstract concept of electrolyte and non-electrolyte solutions. The aim of this study is to evaluate the improvement of students’ understanding concepts with the scaffolding of augmented reality (AR) media in the sharing task learning of electrolyte and non-electrolyte solutions. This research was conducted at one of the high schools in Bandung, Indonesia. Data were obtained through questionare understanding the concept of electrolyte and non-electrolyte solutions and student’s worksheets. Data were analysed quantitatively and qualitatively. The results define students’ conceptual understanding from each question indicator obtaining positive results. It can be concluded that the application of scaffolding augmented reality (AR) media in the sharing task learning of electrolyte and non-electrolyte solutions enhances understanding of student’s concepts.
Pre-service chemistry teachers’ learning obstacles in understanding the relationship between the chemical structures and physicochemical properties of ionic liquids
Authors: Venessa D M , Hernani  , Halimatul H S
Published: May 2020

The purpose of this study was to determine the difficulties faced by pre-service chemistry teachers in correlating the structures with the physicochemical properties of ionic liquids. The descriptive research method used quantitative and qualitative approaches 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 test guided by the 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 the physicochemical properties of ionic liquids. The result also reveals that the most dominant difficulty experienced by pre-service chemistry teachers is difficult to determine the right chemical concepts to explain the tendency of melting point differences 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
Development of STEM-based practicum on making toothpaste from chicken eggs
Authors: Pratiwi D R , Sholihin H , Arifin M
Published: May 2020

One challenge in the science learning in industrial revolution 4.0 includes the development of a practical laboratory work that combines science, technology, engineering and through STEM-based learning. This study aims to develop a practical method based on STEM in the manufacture of toothpaste from the chicken in the egg shells as one example of colloid material. Eggshell was chosen because it is regarded as waste material that may create problems on its disposal. However, eggshell contained high amount of calcium, hence it may be utilized as starting material for toothpaste production. The research methods used Research and Development (R&D) comprised of the development of STEM-based worksheet and its validation by experts. Participants of this study were students of class XI, teacher and validator. Data collected included validator sheets and questionnaires responses. This research resulted in the design of a viable practical methods such as lesson plans and worksheets.
Analysis of Technological Pedagogical and Content Knowledge (TPACK) of Prospective Chemistry Teachers through Lesson Study
Authors: Paristiowati Maria , Yusmaniar  , Fazar Nurhadi M , Imansari Anisa
Published: May 2020

This study aims to analyze the profile of technological pedagogical and content knowledge (TPACK) for prospective chemistry teachers when taking teaching practice courses through Lesson Study activities. This research was conducted in the Chemistry Education Study Program of Jakarta State University and several schools in Jakarta. The method used in this study was a qualitative descriptive research method. The technique of collecting data results was conducted using TPACK questionnaires, lesson plan (RPP) assessment, content assessment, observation of the learning process, and reflective journal. The stages of research were in accordance to the modified Lesson Study stage, consisting of RPP preparation training that integrates TPACK components, implements RPP in learning, observes the learning process and reflects it. TPACK overview was obtained from the questionnaire. Observations showed that prospective chemistry teachers can make or use video, interactive power points in studying chemical balance and acid-base materials. Prospective chemistry teacher can also vary various methods such as demonstrations, discussions, games in the delivery of material and evaluating through online games. The result of the study indicated that the ability of TPACK from prospective chemistry teachers can be developed during the learning process from the perception levels to the Cn-Conception level category through lesson study.
Conception, threshold concept, and troublesome knowledge in redox reaction
Authors: Delisma D , Wiji  , Widhiyanti T
Published: May 2020

This study aims to analyze the conception, threshold concept, and troublesome knowledge in redox reactions. This research used a descriptive qualitative method which included analyzing several journal articles about conception and conducting interviews with five chemistry teachers to get information about threshold concepts and troublesome knowledge. Based on a journal analysis related to the conception for redox reactions, the majority of students correctly answered questions about the concept of defining oxidation numbers based on the binding and releasing of oxygen, determining reducing and oxidizing agents. Conversely, most students experienced misconceptions on the concepts of oxidation and electron transfer, such as in assuming the charge on polyatomic molecules and ions is an oxidation number, changes in ion charge and polyatomic molecules to identify the oxidation and reduction reaction species. Meanwhile, the threshold concept for redox reactions comprised of the symbol of elements, chemical formulas, nomenclature, chemical materials, the constituent particles, and electronegativity. Whereas troublesome knowledge for redox reactions included complexity in determining oxidation numbers, complexity in using definitions, and language use.
Investigating pre-service chemistry teachers’ view of the nature of science and technology for organic light-emitting diodes learning
Authors: Marsya R F , Mudzakir A , Khoerunnisa F
Published: May 2020

This study aims to investigate the pre-service chemistry teachers’ (PCTs’) views of the nature of science and technology (VNOST) for organic light-emitting diodes (OLED) learning. VNOST is used to explain the phenomena of science and technology, and to explore the relation of science, technology, and society. It was proposed that the investigation of teachers’ VNOST is critical to improve the effectivity of classroom learning. OLED technology is one of the newest technology that contained application of chemistry concepts and VNOST aspects, hence can be used in chemistry learning. The quantitative method was used in this study. The participants were 86 pre-service chemistry teachers (PCTs) at Universitas Negeri Padang (UNP) and Universitas Pendidikan Indonesia (UPI). The investigation of VNOST used a questionnaire from Aikenhead, consisted of eight questions. The PCTs’ VNOST was classified into three categories, namely: realistic (R), has merit (HM), and naïve (N). The results showed that there were many PCTs VNOST that categorized in HM and N categories. Identification of chemical concepts related to OLED suggested that OLED may be used in chemistry learning.
Identifying pre-service chemistry teachers’ view of the nature of science and technology’ for ionic liquids as cellulose solvent
Authors: Anggraini F , Mudzakir A , Halimatul H S
Published: May 2020

This research aims to indentify the views of pre-service chemistry teachers about the nature of science and technology. This research was conducted using descriptive methods with participants consisting of 28 students of the Universitas Lampung. Data was collected using a view of the nature of science and technology (VNOST) questionnaire consisting of 4 aspects: Definition of science and technology, Epistemology of science, Sociology of Internal science, and external sociology of science. The results of this study indicate that pre-service teachers define science as a concept and technology as a science application. In the epistemology of science, they view scientific models as genuine objects and there are many ways to calcify. In internal science sociology, scientific decisions are based on previous theories and technological decisions based on their impact on society. For external sociology of science, pre-service teachers who agree with science-technology-society influence and influence each other. In general, the results also revealed that most of them had a good view. The results of this research will be made didactic design in the context of ionic liquids as cellulose solvents to improve the ability of VNOST pre-service chemistry teacher.
Jambolan fruit peels (syzygium cumini l. skeels) as substitute for synthetic acid base indicators: implementation of the ESD concept
Authors: Stephanie M M , Moersilah  , Paristiowati M
Published: May 2020

Implementation of Education for Sustainable Development (ESD) can be done by implementing several strategies such as integrating the three pillars of ESD to learning material and adopting the principles of green chemistry in learning. In this study, the use of renewable materials with safe solvents to extract 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. Under these conditions, maceration was carried out 24 h three times and then evaporated and extracted using n-hexane and chloroform solvents. Extracts that have been tested under various pH, ranging from 1 to 14, and titration methods were then used in learning activities to determine the level of CH3COOH in food vinegar on the topic of acid-base titration. The data generated in this study indicates that the natural indicator of jambolan fruit peels can be used as a substitute for synthetic indicators. Its use in learning provides knowledge to students regarding the chemicals that are more economical and environmentally friendly and support implementation of ESD concept in school.
Empowering students’ engagement in organic chemistry learning through integration of dilemma stories with number head together
Authors: Istianah  , Rahmawati Y , Kurniadewi F
Published: May 2020

This paper portrays research into an innovative curriculum project of dilemma stories which was conducted at a secondary school in Jakarta, with 44 students of year 12. The research focused on the development and implications of a dilemma stories approach with the Numbered Heads Together method in Organic Chemistry learning. The dilemmas 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. Data analysis was conducted based on the themes found throughout the learning process. The results of the research showed the effects of this innovative approach on students’ development of higher order thinking skills, argumentation skills, collaboration skills, problem solving skills, personal values reflection, and responsibility. Students learnt to solve the dilemma problems in real situations which related to chemistry learning. 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.
Developing 22nd century skills through the integration of STEAM into smoke absorber project
Authors: Ridwan A , Rahmawati Y , Mardiah A , Rifai A
Published: May 2020

This study aimed to develop 22nd century skills through the integration of STEAM (Science, Technology, Engineering, Art, and Mathematics) project in chemistry learning. The study involved the thirty-three students of 11 year. The STEAM integration was implemented in the teaching of colloidal system through a project-based learning. The study employed 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. The data were then analysed based on the themes pattern found in multiple data sources. It shows that STEAM improved students’ critical thinking, creativity, collaboration and communication skills, and caring of environmental problems (5C), in addition to information, media, and technology skills. However, this study remains challenging since STEAM integrated chemistry learning requires more empowering student, time resources, and learning contexts in order to explore and to raise the students’ environmental awareness.
Pre-service chemistry teachers’ conceptions of ionic liquids as ionic solvents on the cellulose dissolution process
Authors: Damayanti L A , Fatimah S S , Widhiyanti T
Published: May 2020

This study examines pre-service chemistry teachers’ understanding of concepts related to ionic liquids as cellulose solvents which include knowledge of cellulose, ionic compounds, and ionic liquids. This study used a descriptive method and involved 35 pre-service chemistry teachers from 6th semester who enrolled in the High School Chemistry unit. The research instruments of an open-ended questions which related to the concepts of ionic compounds, ionic liquids and cellulose. The results show that pre-service chemistry teachers have limited conceptions about of the concepts related to the dissolution of cellulose in ionic liquids. Based on the analysis of student answers to open-ended questions, students’ conceptions about definition of cellulose are quite good, but student have no sufficient knowledge about the structure and benefits of cellulose. Furthermore, students’ conceptions related to ionic compounds and ionic liquids are not good enough because student have not been able to mention the differences between ionic compounds and ionic liquids based on the structure, properties, and the constituent particles. This is because ionic liquids as cellulose solvents and the concepts related are not taught directly in the classroom so that it becomes an unfamiliar concept to student.
Students’ preconceptions of the context of magnetic media lubricants and the related chemical contents
Authors: Nurhadi A R , Hernani  , Musthapa I
Published: May 2020

This study aims to analyze students’ preconceptions regarding the context of magnetic media lubricants and chemical content related to the context, as the basis for didactic design development that can teach technological aspects in high school chemistry learning. Descriptive research methods are used in explaining the results of the research obtained. This study involved 40 students from one of the high schools in the city of Bandung. The preconception test questions are based on a magnetic media lubrication enrichment book that was previously developed by researchers, which contains the context of magnetic media lubricants with chemistry contents are transition metals, chemical bonds, and intermolecular forces. Student answers are analyzed using a frequency distribution to categorize the criteria of conceptual understanding of each question and the answers are analyzed for errors to show learning obstacles that might arise in learning. In general, the results show that students still have a limited understanding. Therefore, it is necessary for educators to develop a didactic design based on the findings of student learning obstacles so as to be able to integrate technology in science learning comprehensively and optimally.
Project based learning to develop student’s creativities and characters in designing experiments
Authors: Sari S , Rohmah S , Sobandi O , Nasrudin D
Published: May 2020

This study aims to analyze creativities and characters of students through project-based learning in designing experiments. Through the quasi-experimental method this research was conducted on 20 students who took experimental design courses. Through worksheets, product assessment sheets and attitude observation sheets the creativities and characters of students can be analyzed. The results showed that students creativities in making experimental designs in the form of flowcharts, to present, to create storyboards, to develop products from designing experiments had an average of 77.3, with good category. Meanwhile the characters developed were discipline with observable behavior that always came to the class punctually, spoke honestly, and remained confident even though the task that was doing was not satisfactory, the characters of responsibility with observable behavior was able to do the task without the help of others and diligently working on the task until it was finished.
Ethnoscience knowledge of indigenous community in Sigi District-Central Sulawesi
Authors: Ningsih P , Hamzah B , Said I
Published: May 2020

This study aimed to find out how the understanding of indigenous community in Sigi district (Ongulero and Wiapore villages) that related to ethnoscience knowledge and its application in the daily lives. This study was a descriptive qualitative study using interview and documentation methods. Based on the results of the research, it was obtained that the indigenous community in Sigi district has the scientific knowledge that related to food and the processing, agriculture, and treatment for some diseases (medicines).
Students’ critical thinking skills comparison in discovery learning based on constructing concept mapping and mind mapping
Authors: Suardana I N , Redhana I W , Yunithasari N P M
Published: May 2020

This research focused at analyzing the differences of students’critical thinking skills who learned Basic Chemistry II via discovery learning based on constructing concept mapping and based on mind mapping. This quasi-experimental research used non-equivalent pre-test post-test control group design. The subject was students in Science Education Study Program, the Ganesha University of Education on 2ndsemester, consists of 34 students who were divided equally into two groups (A and B). Class A and class B correspond to a group who learned Basic Chemistry II through discovery learning based on concept mapping and mind mapping construction, respectively. A test was conducted to examined students’ critical thinking skills. The results demonstrated that there is no significant differences in critical thinking skills of both groups. However, there are differences in their indicators i.e. interpretation, analysis, evaluation, inference, and explanation indicators.
The influence of mobile–NOS model on students understanding on Nature of Science (NOS) and scientific literacy
Authors: Khery Y , Nufida B A , Suryati
Published: May 2020

The aim of this research was to evaluate the influence of mobile-NOS model of learning on students’ understanding of Nature of Science (NOS) and scientific literacy on general chemistry course. The method employed in this research was quasi-experimental method carried out by post-test only control group design. The research subjects were 75 students participating in the General Chemistry course for the academic year of 2018-2019 selected by the saturated sampling method. Subjects were distributed into two groups, which were experiment and control groups. The experimental group was subjected to Mobile - NOS Model of Learning and the control group to NOS Oriented Learning. Data were collected by analysing the NOS questionnaire and scientific literacy test results. Data was analysed by independent samples t test. Research result showed that there are influence of Mobile - NOS Model of Learning to Students Understanding of Nature of Science (NOS) and Scientific Literacy.
Students’ mental models in acid-base topic
Authors: Redhana I W , Sudria I B , Suardana I N , Suja I W , Putriani V D
Published: May 2020

This study aims to describe the profiles of students’ mental models of SMA Negeri 1 Singaraja on the topic of acid-base. The study was a survey research. The population consisted of 279 people of the eleventh-grade students of Mathematics and Natural Sciences Classes of SMA Negeri 1 Singaraja in Buleleng Bali Indonesia in a school year of 2018/2019. In this study, all members of the population became members of the samples. The data needed in this study were the student’s mental model scores. Data were collected by a diagnostic test. Data were analyzed descriptively by grouping students’ mental models into three types, including scientific, synthetic, and initial mental models. The results showed that students had scientific, synthetic, and initial mental models of 2.69%, 61.766%, and 35.56% respectively.
Application of augmented reality (AR) media on conformation of alkanes and cycloalkanes concepts to improve student’s spatial ability
Authors: Kodiyah J , Irwansyah F S , Windayani N
Published: May 2020

The purpose of this study is to apply the Augmented Reality (AR) media to improve the student’s spatial ability on alkanes and cycloalkane conformation. The method of this study was quasi-experimental control group pretest-posttest design for the second-semester students of the Chemical Education at UIN Sunan Gunung Djati Bandung. Data carried out through tests and non-test (worksheet and observation), and further analyzed using statistical methods by mean of SPSS version 23. The results showed that the student’s spatial ability on conformation of alkanes and cycloalkanes was increased with N-gain results categorized as moderate (mean 0.58). This means that AR conformation can visualize the movement of an object.