bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of malondialdehyde and superoxide dismustase levels after exposure of electric cigarette in rats
Authors: Lisdiana  , Nugrahaningsih WH , Nufus I
Published: July 2020

Electric cigarette (e-cigarette) is cigarette that operate on battery power to burn liquids and to produce a steam. One of the contents of an electric cigarette is nicotine. It is a chemical compound that can cause addiction and trigger oxidative stress. This study aims to analyze the levels of malondialdehyde and superoxide dismutase in the blood of rats that exposed to nicotine from e-cigarettes. The study was conducted on 30 male Wistar rats which divided into 5 groups, control group there are negative and positive and treatment group with nicotine 0,25 mg, 0,5 mg, 0,75mg with exposure to cigarette smoke for 30 days. Malondialdehyde and superoxide dismutase levels measurements using the TBARs method, the results that can be known using a spectrophotometer with a wavelength of 532 nm. SOD levels were measured by the calorimetry method. The One Way Anova analysis showed that malondialdehyde and superoxide dismutase levels in the control group were significantly different from all groups. The conclusion is that nicotine has an effect on increasing malondialdehyde and decreasing superoxide dismutase levels.
The correlation between total antioxidant status with malondialdehyde and caspase 3 epididymal fluid type 2 diabetic rat and non diabetic
Authors: Christijanti W , Juniarto A Z , Suromo L B
Published: July 2020

The aim of this study is to determine the correlation between total antioxidant status (TAC) with malondialdehyde (MDA) and caspase 3. This study was divided into non-diabetic (n = 8) and type 2 diabetic rats (n = 8) induced by streptozotocin 65 mg / kg body weight. Epididymal fluid was examined after 28 days. Antioxidant status was examined by the trolox equivalent method, MDA with the thiobarbituric acid (TBA) reaction and caspase 3 expression with immunohistochemistry. Our results show that the mean of TAC in non-diabetic was significantly higher (P <0.000) than diabetic rats, MDA (P <0.000) and caspase 3 expression (P <0.001) in non-diabetic rats were significantly lower than diabetic rats. TAC was negative correlation with MDA (r = 0.881, P = 0.004) and caspase 3 (r = 0.898, P = 0.002) in the non-diabetic group. In the diabetic group, TAC was a negative correlation with MDA (r = 0.856, P = 0.007) and caspase 3 (r = 0.886, P = 0.003). In conclusion, total antioxidants have a negative correlation with MDA and caspase 3 expression.
The potential effect of high flavonoid soybean diversification products through tempe flour substitution
Authors: Bintari S H , Putri M F , Saputro D D , Suwahyo  , Parman S , Sunyoto
Published: July 2020

Nowadays, overconsumption of junk food and sedentary lifestyle lead to the development of various diseases. Legumes intake has been known to support one’s health since it’s contain various nutrients and bioactive compounds that’s beneficial for health. One of the most consumed legumes is soybean. In Indonesia, soybean usually consumed as tempe and tahu (tofu). Tempe contain numerous nutrients, for example carbohydrates, fats, proteins, minerals, dietary fibers, vitamins, and antioxidants. Therefore, tempe can be eaten as it is of added to other food or to create a new food product through diversification. This study aims to characterize the diversification product of tempe on antioxidant and nutritional content. The diversification products are tempe flour (TF), tempe meatball (TM), chocolate tempe (CT), tempe moringa (TM), and tempe onion (TO). The new products still have the same basic flavor as before, but the chemical tests show there are a number of flavonoid compounds increasing with highest concentration found in TF. In conclusion, TF can be use in the future for further diversification to create tempe-based food with high antioxidant content.
Effects of Chitosan on Sperm Quality of Lead Acetate-Induced Rats
Authors: Marianti A , Isnaeni W , Setiati N , Sumadi S
Published: July 2020

Escalation in blood lead level may decrease sperm quality. Chelating agent, such as chitosan, is known to reduce the detrimental effects from lead exposure. This research aims to analyze the effect of chitosan on sperm quality of lead acetate-induced rats. 30 rats were divided into six groups. All treatment groups, aside from control group, were induced by 175 mg/kg weight of lead acetate. Positive control group was treated with Ca2EDTA, while negative control group was only treated with lead acetate. Treatment group 1, 2, and 3 were treated with chitosan in gradual dose; 64, 32, and 16 mg/kg weight respectively. On the 31st day, the sperm quality was analyzed and the rats were terminated. Statistical result showed that positive control group and treatment groups had no significant difference from control group but was significantly different from negative control group. Research parameters, which were sperm count, motility of progressive sperm, immotile sperm, and normal sperm, were significantly different among the all treatment groups. However, another research parameter, which were nonprogressive sperm motility and sperm viability were not significantly different. Treatment group 1 was not different significantly from control and positive control groups. To sum up, chitosan improves the sperm quality of lead acetate-induced rats.
Morphological characterization and its variation of “Wirasangka” mango as the flora identity of Tegal regency, Central Java, Indonesia
Authors: Abdullah M , Rahayu E S , Retnoningsih A
Published: July 2020

“Wirasangka” mango (Mangifera indica L. var. Wirasangka) is a flora of identity from Tegal Regency, Central Java Province. There is a difference in understanding about Wirasangka mangoes among the people. Some residents mentioned that “wirasangka” mango is another name for golek, honey golek, Indian golek, okyong, and tengkoeh mangoes; while others claim that the varieties differ from one another. Therefore it is necessary to do scientific characterization to ensure the truth of the “Wirasangka” mango cultivar. The purpose of this research was to characterize the Wirasangka mango based on morphological markers and examine variations in vegetative characteristics. The research was conducted on “Wirasangka” mango habitat in several areas of Tegal Regency, Central Java. Plant material used were trees referred to by local residents as “Wirasangka” mango, golek, honey golek, Indian golek, okyong, and tengkoeh. Mango trees planted by Tegal Regency Agriculture Department employees in the Procot area were used as a reference for Wirasangka mangoes. Morphological character identification was carried out based on the Descriptor handbook for Mangoes (Mangifera indica) from the International Plant Genetic Resources Institute. Data were analyzed using the R statistical program to calculate the coefficient of variation of its vegetative characteristics and research the comparison of characters between cultivars. Based on observations of morphological character measurements, the results show that there are low morphological variations among the Wirasangka mango cultivars. The results of the dendogram cluster analysis show that the cultivar referred to by the community as the Wirasangka mango has a high similarity with the cultivar golek, the Indian golek, and okyong.
Using two tier based concept test to analysis profile of student understanding on the concept of simple harmonic motion
Authors: Umam A , Suparmi  , Sukarmin
Published: July 2020

The purpose of this study was to analyze students understanding profile about simple harmonic motion conceptual. The subject of this study were eleventh grade student of sciences class in Surakarta2 State Senior High School with 90 students whose registered as student in the 2018/2019 school year. Sampling in this study used random sampling technique. To analyze students understanding profile used instrument of two tier test with 20 item. Instrument consists two level, first level is multiple choice questions and the second level is open ended free response question which is the reason of student’s answer to the first level questions. The result of this study show that 12,9% of students understanding the concept of simple harmonic motion, 16% of students understand in part, 18,2% of students show misconception, 31,5% of students show specific misconception, and 16,5% of students didn’t understand the concept. The highest concept understand was in concept relation of velocity, angular velocity, displacement and acceleration in simple harmonic motion with 41,11%, and the lowest was in definition of simple harmonic motion with 0,74%.
Framework TPACK using Quick Response (QR) code to promote ICT literacy students in learning physics
Authors: Oktasari D , Jumadi  , Warsono  , Putri Z R
Published: July 2020

Teachers are an important instrument in finding a new role that is more contextual and relevant to 21st century learning concepts offered a demanding professionalism of teachers in integrating technology, pedagogy and content knowledge (TPACK) in learning. This research aims to design a learning device in accordance with the framework using technology TPACK Quick Response (QR) Code to promote ICT literacy skills of students. The subjects were 95 students menangah school (high school) class X at SMAN 6 Yogyakarta. These results indicate that the instrument developed ICT literacy test had a reliability 0.84. Criteria for each item has a value of 0.98 with the criteria infit meansquare grains fit with the model of Rasch (meansquare infit ≤ 0.77 ≤ 1.33) with both criteria. Cohen’s interpretation of the value of f at 0:33 in the category of large effect size. TPACK Framework Using Quick Response (QR) Code that was developed has a positive effect with the high category in enhancing ICT literacy of students.
The Implementation of collaborative learning models using worksheet to increase student learning outcomes at senior high school the subject of light waves
Authors: Hermarini R , Astra I M , Budi A S
Published: July 2020

This action research aims to increase the learning outcomes of students by implementing of collaborative learning models using worksheet on the subject of light waves in SMAN 2 Indramayu XI-1 Mathematics and Natural Sciences. The research models used in this study is action research that actions applied with the following stages: the first stage of planning; the second stage of acting; third stage of observing; fourth stage of reflecting. This study consisted of three cycles implemented in January 2019. The instruments of this study are worksheet, observation sheets of teacher and student activities and learning outcomes assessment sheets which consist of cognitive, psychomotor and affective assessments. Based on the results of research and discussion of students learning outcomesgradually in each cycle, the conclusions obtained in this study that by implementing of collaborative learning models using worksheet to increase students learning outcomes at senior high school on the subject of light waves.
Developing of physics teaching materials based on authentic learning to train problem-solving skills
Authors: Wati M , Sutiniasih N , Misbah  , Mahtari S , Annur S , Mastuang
Published: July 2020

Authentic learning as a means that allows students to develop knowledge transferred to real-world practice. This research aimed at determining the validity, the practicality and the effectivity of the use of physics teaching materials based on authentic learning. This research type is a research and development using the ADDIE model. The subjects of the trial were 33 students of class X at one of the high schools in Banjarmasin. The research instruments were validation sheets, observation sheets for lesson plan implementation, student achievement results and problem-solving skills assessment sheets. The results showed that: (1) the validity of the Physics teaching materials based on authentic learning was very high with an average value of 3.68, (2) practicality with an average of 3.68 criteria very high, (3) effective in improving aspects of knowledge of students who are classified as moderate with a gain score of 0.6 and problem-solving skills is adequately trained. It was concluded that the physics teaching materials based on authentic learning were declared valid, practical and effective to train problem-solving skills. This problem-solving skills is also useful for students to get success in real life.
The critical thinking ability profile of grade X SMA N 2 Kudus
Authors: Rahayu E C , Suparmi  , Sarwanto
Published: July 2020

This study aims to describe the critical thinking ability of grade X students of SMAN 2 Kudus on physics subjects. The design of this study uses quantitative descriptive methods. The research was conducted at SMAN 2 Kudus with a sample of class X research taken by cluster random sampling. The instrument used was a test of critical thinking skills. Data analysis was carried out in a quantitative percentage. The results showed that critical thinking skills of class X students of SMAN 2 Kudus were in the low ability category with an average percentage of 22.91 %.
Examining the relationship between students’ motivation and critical thinking skills in learning torque and static equilibrium.
Authors: Andriani R , Hidayat A , Supriana E , Anantanukulwong R
Published: July 2020

This study designed to determine the motivation components that most motivated students in learning torque and static equilibrium and the relationship of the motivation with students’ critical thinking skills on Torque and Static Equilibrium subject. The research was conduct in Senior High Scholl Laboratory State University of Malang. This study used correlational research design and using the Physics Motivation Questionnaire II (PMQ II) and Torque and Static Equilibrium Critical Thinking test as Instrument. The analysis showed that students have a weak motivation level in learning torque and statistic equilibrium. Grade motivation found to be the most motivating for students. The least motivated for students is Career Motivation. Researcher found that critical thinking skills correlate significantly with intrinsic motivation, grade motivation, and self-efficacy, but the relationship between critical thinking skills with self-determination and career motivation were not significant. However, the overall motivation has a significant correlation with students’ critical thinking skills.
Generic skills pattern of physical teacher’s candidate through design of school physics practicum guidelines
Authors: Khoiri N , Rusilowati A , Wiyanto  , Sulhadi  , Jafar R
Published: July 2020

The aim of the study is to describe the patterns of generic thinking skills of students through the design of physics practicum guidelines. The research method uses quasi-experimental using post-test only control group design. The research sample is a Physics Education study program student in 5th semester, taken by cluster random sampling technique. The experimental group carried out physics laboratory project learning with generic science skills while the control group studied physics laboratory projects. Data collection techniques are using observation and test sheets. Data analysis techniques using statistical tests with t test. The results of the study obtained observational data and test data, the data were tested for normality, reliability and statistical tests. The difference in generic science skill patterns was tested statistically, and then data were analyzed for each indicator of generic science skills. The product of this research is the school physics practicum guidelines. The results of the analysis of the generic science skills test showed that the generic science skills in the experimental class were better than the control class. Based on the generic science skill pattern, it is found that the physics teacher candidates are better on the aspects of direct and indirect observation.
Validation construct: Confirmatory Factor Analysis (CFA) instruments scientific communication skills students in learning physics
Authors: Oktasari Depi , Ismet  , Siahaan S M
Published: July 2020

Scientific communication skills into competencies required of students in the 21st century scientific communication must be owned that is orally or in writing. This research aims to develop assessment instruments scientific communication skills of students in physics. Scientific communication skills assessment instrument is a synthesis developed into five indicators. Instruments tested on students of SMAN 6 Yogyakarta. The instrument was developed to test the construct using LISREL. LISREL analysis used in the form Confirmatory Factor Analysis (CFA) to see how the fit between indicators developed models. The results showed that scientific communication instrument had a reliability 0.82. Criteria for each item has a value infit meansquare 1:01 with grain criteria fit with the model of Rasch (meansquare infit ≤ 0.77 ≤ 1.33) with both criteria. Loading factor of each item instrument has a value of> 0.3. The results validate the results obtained construct second order confirmatory factor analysis (CFA) on 17 items results showed that p-value = 0.27505 (p> 0.05) and RMSEA = 0.031 (RMSEA> 0.05). By loading factor> 0.3 and t-value> 1.95 so that the item is valid and thus fit modelDengan scientific instruments developed communication skills can be used to measure scientific communication skills of students in physics.
Physics based learning effectiveness PhET simulation model using Problem Based Learning (PBL) for self-independent learning on material and energy enterprises learners MAN 3 Sleman
Authors: Saputra S , Jumadi  , Wilujeng I
Published: July 2020

This study aims to determine the effectiveness of the use of Phet simulation applications on smartphones Problem Based Learning (PBL) learning models of students’ learning independence and the different effects of learning independence. The type of research applied was quasi experiment. Research design used Non-equivalent Control Group Design. The population in this study was all students of class X of MAN 3 Sleman which was divided into 8 classes. The sampling technique used cluster purposive sampling. Both classes are given treatment with the Problem Based Learning model assisted by the Phet application which was installed on each student’s smartphone. The average level of learning independence of students in the modelling class after they participated in learning activities included in the good category, and in the implementation, class included in the good category. The significance level shows the numbers in the effective category. So it can be stated that the learning independence questionnaire of both classes was effective, it can be concluded that the Problem Based Learning model assisted by the Phets application is effective in terms of the achievement of the learning independence of students in class X of MAN 3 Sleman in the academic year 2017/2018.
A problem of chemistry book: The need to improve student’s science literacy with STSE approach
Authors: Lestari O , Anwar S , Priscylio G , Agustina N R , Wahyuni W S , Oktasari C
Published: July 2020

In this article, we explain the need for chemistry book developed by 4S TMD models on the level of science and literacy with STSE approach. Teaching materials are one of the determinants in the chemistry learning process, one of them is the concept of rate reaction. Rate reaction concept there are many applications in daily life. One suitable approach to use is the STSE approach. Teaching materials with the STSE approach help students reflect on the scientific, environmental, technological and social aspects of learning. Science literacy as an output of knowledge, and scientific processes. The instruments for data collection used in this study were structured questions and interviews. This research was conducted in 2 senior high schools, 2 vocational high schools with 12 chemistry teachers. The teacher structure question responses was analyzed descriptively for each item. Teaching materials currently available have not been able to increase students’ interest in reading because their appearance is less attractive, material content is difficult for students to understand. Most teachers want teaching materials that are easily understood by students, full colour, contain many examples in daily life. So that it can improve students’ scientific literacy. STSE-based teaching materials are expected to improve students’ scientific literacy because contain content in life. STSE-based teaching materials are still rarely used because of the lack of availability of STSE-based teaching materials that can be used by teachers in learning. The results of this study are the basis for us in developing chemistry book by 4S TMD models on rate reaction to improve student’s science literacy with STSE approach that can be used in chemistry learning and teaching in upper high schools.
Identify students’ scientific literacy through tests on kinetics of chemistry concept
Authors: Diyanti R O , Mulyani S , Sarwanto
Published: July 2020

The purpose of this study was to determine students’ scientific literacy through test on the kinetics of chemistry concept. Scientific literacy is one of the abilities students must have to know how much they can implement their knowledge to be applied in life. This test was established randomly selecting 65 students as participant of eleventh grade from senior high school in Sukoharjo. Twenty five number of questions tested is multiple choice. In each item of the questions contain aspects in the dimensions of scientific literacy including dimensions of content, context, and competence. The questions tested were divided into 5 low difficulty questions, 12 moderate difficulty questions and 8 high difficulty questions. The results of this study, 59.07% participant can answer low questions, 42.3% medium questions, and 57.5% high level of difficult questions. Furthermore, students’ scientific literacy of 67.69% are low with 7.69% get good point. This shows that many students don’t understand yet how to use and apply of science in life.
The efforts of learning outcomes and motivation improvement through collaborative learning based on e-learning with course review horay on basic chemistry subject
Authors: Maria E , Albeta S W , Rery R U , Abdullah  , Osman K
Published: July 2020

E-learning-based collaborative learning has proven to be an effective type of learning to improve student learning outcomes and motivation. However, the course review horay (CRH)is crucial to this learning as a supporter of learning. It is proved that E-learning-based collaborative learning with CRH not only improves learning outcomes and motivation but also shows the relationship between motivation and learning outcomes. The previous learning that did not use the CRH does not demonstrate the relationship between motivation and learning outcomes. This study applied 3 cycles which were conducted through lesson study. In Cycle I, the learning was performed by utilizing cooperative learning based on e-learning. After that, in Cycle II, the learning was performed by using collaborative learning based on e-learning. Furthermore, during Cycle III, the process of learning was conducted by utilizing a collaborative model based on e-learning with CRH. It was found that there was an improvement in learning outcomes before and after learning in each cycle. If it is compared, the motivation and learning outcomes in Cycle II were higher than those in Cycle I, and the motivation and learning outcomes in Cycle III were higher than they were in Cycle I and II.
STES – Chemistry book: The need for learning and teaching on acid and base 11thgrade students
Authors: Agustina N R , Anwar S , Priscylio G , Lestari O , Oktasari C , Wahyuni W S
Published: July 2020

The aims of this study explain the need of chemistry book on acid and base developed by 4S TMD models with STES approach. Problems of education in the last 100 years are often related to students understanding of the concepts taught, one of which is acid-base [1]. In acid-base, there are many applications in daily life. So to overcome these problems, we need a teaching material with the STES approach [2]. The STES approach is used to improve positive attitude towards science and conceptual knowledge as well as improving teacher quality and student learning outcomes [3,4]. This study uses qualitative descriptive research. The instruments of data collection used in this study were structured questions and interview. The study involves 3 senior high schools and 3 vocational high schools with 12 chemistry teachers. The teachers structure question responses was analyzed descriptively for each item. The teacher needs teaching materials that explain the material simply and involve examples in daily life. The teaching material available lack a concept that contains knowledge is associated with technological developments, especially in acid-base material. The research findings indicate the need to develop chemistry book on acid-base to meet the shortcomings of interesting teaching materials. The results of this study are the basis for us in developing a chemistry book on acid and base by 4S TMD models with STES approach that can be used chemistry learning and teaching in upper high schools.
Establishing an android-based integrated sciences glossary for junior high school students
Authors: Haryanto A , Billah A
Published: July 2020

Preliminary field research revealed the requirement of an interactive and supportive learning media for the Integrated Science course. Therefore, this research aimed at producing a valid and practical glossary of Integrated Science. The Four-D (Define, Design, Develop and Disseminate) method was applied in this research. Materials expert, media expert, and teacher have validated the product; also, tested in One-to-One Trial, Small-Scale Trial, and Field Trial which included respectively three, twelve, and thirty VII grade students. The product validity scored 4.21 and categorised as “excellent” while the product practicality value was 4.45 and categorised as “excellent”. The research product named “Integrated Sciences Glossary” is in the Application Package File (.apk) format and could be downloaded freely on the Google Play Store. This glossary consists of scientific terms equipped with explanations in both English and Indonesian. The students showed their enthusiasm in using the application for its ease. Other than that, this Android-based glossary is convenient to be used outside classroom learnings.
Indigenous science: what we can learn?(the exploration of balinese local wisdom for science learning)
Authors: Suarmika P E , Arnyana I B P , Suarni N K , Marhaeni A A I N
Published: July 2020

Indigenous science is the original knowledge of local communities in studying natural phenomena based on observations produce product, attitudes, and scientific in processes in accordance with the culture and location of the community. The research purpose is to explore indigenous science based on balinese local wisdom that can be used in science learning at school. This research is an exploratory study. Data collection use observation, interview, and literature study. Data analysis was also carried out for data on indigenous people’s knowledge and local wisdom. Based on the result of data analysis, there are three dimensions of science in the balinese local wisdom that can be used in science learning: first, local wisdom contains element of scientific attitude; second, local wisdom is a scientific product; and the third finding in this study is local wisdom as a scientific process.
Worksheet based on multiple intelligences for improving student’s result
Authors: Dewi N C , Martini
Published: July 2020

Basically, every individual have multiple intelligence. Therefore, in the learning process must facilitate students to be able to develop their intelligence. There are five intelligences that will be developed in worksheet based on multiple intelligences on the human motion system material, that is verbal-linguistic, visual-spatial, musical-rhythmic, intrapersonal, and physical-kinesthetic. The aim of this study is to develop worksheet based on multiple intelligences that fulfill validity, practicality, and effectiveness. Worksheet development uses the 4D model. The worksheets include the subject: bones, joints, muscles, and motion systems in humans. The results of the worksheet validation were obtained very feasibly with a percentage of 95.5% on suitability aspect; 92.5% on conformity of presentation aspect; and 90.0% on language aspects. Practical analysis was seen through implementation of learning in three meeting with an average of 72.5%; 87.2%; and 85.7% (very good). Effectiveness seen from learning outcomes increases from the average score of 38.5 (pretest) to 85.2 (posttest). The completeness of multiple intelligences also increased, from 21,9% to 84.4% for verbal-linguistics; 9.4% to 75.0% for visual-spatial; 25% to 84.4% for intrapersonal; 0% to 46.9% for physical-kinesthetic; and 0% to 56,4% for rhythmic music. The conclusion of this study is worksheet based on multiple intelligences that have fulfilled validity, practicality, and effectiveness.
Use of the Science Technology and Society (STS) model with the help of Facebook in science learning for junior high school students
Authors: Poluakan C , Kapubau Y V , Suryani N W , Sumampouw H M , Rungkat J
Published: July 2020

Research has been conducted to investigate the influence of the Science Technology Society (STS) learning model which is assisted by social media Facebook (FB) in science learning. This research was conducted in a group of junior high school students in Tondano, North Sulawesi, Indonesia. The research method is a Quasi-Experiment Posttest-Only Control Group Design. The experimental group was treated with the STS learning model assisted by FB, and the control group with lectures, discussions, question, and answer. The number of samples in the experimental group consisted of 25 students and the number of samples in the control group was 25 students. The results of the statistical analysis concluded that there was an influence of the STS learning model with the help of Facebook social media on improving student learning outcomes in science learning in junior high school students. The research data showed that the average post-test score of student learning outcomes in the experimental group was 88.5 higher than in the control group score was only 68.9. The implication of the research results is that the use of Facebook social media in the learning process will make teachers and students interact not only in the classroom. In addition, the STS learning model arouses students’ interest in science learning, especially related to strengthening scientific literacy
Self-adjustment of candidate counsellor student who is forced in taking a guidance and counselling department
Authors: Sari R O , Suwarjo
Published: July 2020

The research aims to determine the process and self-adjustment factors of guidance and counseling students to be able to maintain their status as students of guidance and counseling. This study uses a qualitative approach to the type of case study research and data collection techniques using observation and interviews. The results showed that students A, B, C, and D claimed to be forced to take the direction of guidance and counseling. Until the third semester of students A and B were able to adjust themselves, students A and B considered this a fate that must be lived and reacted with grace and even now they felt solid with the direction of guidance and counseling. While students C and D have not been able to adjust because they are unable to live it. Students C and D look for alternative roads by moving majors as desired.
The appropriateness of developing the media: experts’ validation and students’ response of learning media based on augmented reality technology for natural science lesson
Authors: Astuti F N , Suranto S , Masykuri M
Published: July 2020

The development in science are so rapid in this era. Many experts exploited medias with new technologies in science learning based on the development of 21st century educatiom. Technology is used as innovative learning media, that can follow the times. Technology which is integrated in learning is strategies for achieving learning purposes. This research is conducted to develop and find out appropriatness of learning media based on augmented reality technology for natural science lesson. The media was validated by the experts and science teachers. The samples were 30 of 8th grade students. The method was descriptive quantitative and the instruments were validation sheets and student questionnaires. Based on the results, it shows validation of media is 83%, subject 82%, language 87%, and from teachers are 88%. While the results of evaluation stage are 91%. It can be concluded that is suitable to used as learning. Then, this media can be used for science learning process in classroom and can be used for teachers as a reference for developing other learning media.
The effectiveness of Inquiry-based learning to train students’ thinking skill based on SOLO taxonomy
Authors: Damopolii I , Nunaki J H , Nusantari E , Kandowangko N Y
Published: July 2020

The aimed of the research was analyzed the effectiveness of IBL (inquiry-based learning) device for training thinking skills of students based on SOLO taxonomy. The research was a part of research and development with the application of used one group pretest-posttest design. Research participant included 88 grade X student taken from senior high school in Manokwari. Collected of data used an achievement test to measure thinking skills was used a rubric SOLO taxonomy with five levels. Wilcoxon test was used for data analysis. It is revealed that sig. 0.000 < 0.05, 64 students experienced an increased level of thinking, 24 students were ties, and no students decrease in the level of thinking. Based on findings data, inquiry-based learning applications to train the thinking skills of learners is effective.
The scheme construction to solve the adding fractions problems using images conducted by elementary students
Authors: Gembong S
Published: July 2020

Mahthematics consists of various learning segments and one of which is a fraction. Completing the adding fractions can be done through several methods, one of which is by using images. This is a less-known method of learning, especially for elementary school students which may be due to incomplete student scheme construction. This study aims to describe how elementary school students construct the scheme by using images in the adding fraction. The subject was the sixth grader who has high mathematical skills. Data were collected through interviews as well as mathematical abilities and adding fraction tests as supporting instruments. Mathematical ability tests were used to determine the students’ mathematical abilities category; while adding fraction tests were used to explore the student schemes construction. Data were analyzed qualitatively based on the APOS theory framework (Action, Process, Oject, Scheme). The results showed that the subject made an incomplete sketch of adding fractions through images proved by how to complete the design scheme in adding fractions through images, subject tended to change procedural solutions by using sketches.
The development of module based on scientific literacy: geometric optics
Authors: Shofiyah N , Wulandari F E
Published: July 2020

The purpose of this research is to develop geometry optics module based on scientific literacy in terms of theoretical and empirical. The module was developed by using four-D model. Subject of this study was the geometry optics module which was tried out on first semester students of natural science education by using the one-group pre-test post-test design. The two techniques of collecting data were validation sheets and test. The obtained data then were analyzed with quantitative descriptive. The results showed that the module of Geometric Optic was judged valid in terms of content, performance, language and scientific literacy aspect with average score respectively 3.35, 3.38, 3.44, and 3.50. In addition, the Geometric Optics module-based scientific literacy was categorized easy to understand by cloze test. Based on the results of N-gain analysis, it was obtained an average score of 0.63 which means that the geometry optics module based on scientific literacy was able to improve students’ scientific literacy skills.
The influence of mobile learning with oriented NOS to students learning performances
Authors: Khery Y , Nufida B A , Suryati  , Rahayu S , Budiasih E
Published: July 2020

To evaluate the influence of Mobile Learning with Oriented NOS to science process skill, scientific attitude, and concept understanding of general chemistry students the purpose of this study. In form of quasi experimental, this was carried out bypost-test only control group design. There were 142 students as subject separated on to 3 groups. Experiment 1 was treated by Mobile Learning with Oriented NOS, experiment 2 by Learning with Oriented NOS, and control group. Data collected by observation sheet of science processs kill and scientific attitude, and concept understanding test. Data was analyzed by inferential statistic method. Research result showed that average score of student science process skill and scientific attitude on experiment 1 respectively greater than experiment 2 and control. The significant value for the t test of student science process skill and scientific attitude, between experiments and control is alike that is 0.00. On the other hand, the significant value for the t test of student concept understanding between experiment 1 and experiment 2 is 0.249, while between experiments and control is 0.000. It may conclude that the learning with oriented NOS has better role on student learning performance improvement than mobile learning only.
Preparation of authentic assessment instruments on instrumental analysis practice project-based to improve graduate competence
Authors: Prasetya A T , Cahyono E , Sudarmin  , Haryani S
Published: July 2020

The instrument has been tested to measure students’ competency level. Competencies measured include mastery of instrumentation analysis concepts, basic laboratory skills, instrumentation analysis skills, critical thinking skills, and scientific work abilities. Mastery of instrumentation analysis concepts is assessed through tests, basic laboratory skills and instrumentation analysis skills assessed through observation, critical thinking skills and scientific work abilities assessed through product assessment in the form of designs and reports from the project. The test results obtained that information from 30 test questions mastery instrumentation analysis concepts there is only 25 valid questions and measurement instruments mastery of the overall concept reliable with reliability 0.845. Authentic assessment instruments and rubrics as guidelines for evaluating basic laboratory skills, instrumentation analysis skills, and critical thinking skills, scientific work abilities were tested through 6 observers. Overall the results of the inter-rater reliability test obtained by interclass correlation (ICC) above 0.7 which means that authentic assessment instruments are valid and reliable.
Student’s critical thinking skills in interactive demonstration learning with web based formative assessment
Authors: Harizah Z , Kusairi S , Latifah E
Published: July 2020

Besides conceptual understanding, students are required to have good critical thinking skills because critical thinking skills is one of the important goals in educational world. By having good critical thinking skills, students can solve problems especially in Physics easily. The aim of this research was to study student’s critical thinking skills after experienced interactive demonstration learning with web based formative assessment in static fluid. This research used quasi-experimental with one group pre-test post-test design. The subject of this research was students in grade XI of Natural Science class in MAN 1 Pamekasan. The result of this research showed that interactive demonstration learning with web formative assessment could increase student’s critical thinking skills in static fluid. Based on n-Gain score, the improvement of student’s critical thinking skills in static fluid included in the medium category. This happens on all three indicators of critical thinking skills that have been used, namely reasoning, argument analysis and problem solving.
The effectiveness of chemistry learning strategy in improving students’ learning process and achievement
Authors: Subagia I W , Wiratma I G L
Published: July 2020

This research aimed at describing and explaining the implementation results of learning strategy for senior high school chemistry based on starter experiment approach. This research was part of research and development conducted simultaneously in two different schools in the form of pre-experiment. Two chemistry teachers and 52 students were involved in this study. Mix methods consisted of observation and test were used to collect data. This study involved two topics of senior high school chemistry, namely Atomic Structure and Electron Configuration. This research focused on examining the effectiveness of learning process and learning achievement of students. The effectiveness of learning process was viewed from the involvement of students in learning obtained by observation techniques. The student learning achievement was viewed from the number of students achieving the minimum criteria of mastery learning set out by the schools. The result of this research revealed that learning process undergoes effectively which can be seen from students’ participation in learning, such as observing the starter experiment, promoting questions, discovering concepts, and applying concept to solve problems. In general, it can be stated that more than 90% students achieved the minimum standard of mastery learning set out by the schools.
The model of science proficiency of Indonesian students in PISA 2015
Authors: Susongko P
Published: July 2020

The objectives of this research are: (1) to find theoretical model that can illustrate the science Proficiency of Indonesian students, (2) to know the factor factors that predominantly influence the science Proficiency of Indonesian students. The research was conducted using ex post facto method using PISA 2015 data for Indonesia as many as 6088student responses. Data analysing used structural equation modelling which involve 14 observed variables and 3 latent variables and limited to the variables measured at student level. The research result showed that the Science Proficiency of Indonesian students are positively influenced by the background students and the quality of science learning. Student backgrounds can be indicated by Index of economic, social and cultural status and ICT Resources. The quality of science learning can be shown by indicators: disciplinary climate in science classes, teacher motivation in science classes of student choices, teacher-directed science instruction, and perceiving feedback. Science Proficiency of Indonesian students can be shown by indicators: environmental awareness, science self-efficacy, epistemological beliefs, sense of belonging to school, and plausibly value of science. The results also show that the background aspect of Indonesian students is more dominant in influencing science proficiency than the quality of learning.
Scientific reconstruction of indigenous knowledge of batik natural dyes using ethno-STEM approach
Authors: Sudarmin S , Sumarni W , Azizah S N , Yusof M H H , Listiaji P
Published: July 2020

This research intended to analyze the community’s knowledge scientifically of batik process and types of local plants used as natural dyes for batik colouring. The study took place at one of local batik manufactories, Zie Batik, situated in Malon Gunungpati, Semarang, Indonesia. The research instrument was observation and interview sheets. The observation of the batik making process and interview with the manufactory owner unveiled the batik techniques, tools, materials, and creative ways to produce good quality batik motifs, dyes, and calculate profit and loss. The obtained data were then analyzed scientifically through the stages of verification, reduction, validation, and conceptualization based on the Ethno-STEM approach. The analysis results revealed that there are numerous plants used in making batik that could produce color substances. Moreover, the steps of the batik process were also explained. The scientific knowledge reconstruction based on the STEM aspects showed that owners and artisans possess the proper batik techniques and methods, have creative ideas on how to produce high-quality colors and batiks, and get traditional as well as modern sales management. Scientifically, the natural dyes contain secondary metabolite compounds. Scientific knowledge in chemistry about the process of fixation, extraction, solution, alum compounds, anthocyanin, and pigments were also found in the Batik process
Need of chemistry book developed by 4S TMD models on hydrocarbon to increase knowledge building environment eleven-grade students
Authors: Oktasari C , Anwar S , Priscylio G , Wahyuni W S , Agustina N R , Lestari O
Published: July 2020

In this article, we explain the needs of chemistry book developed by 4S TMD models on hydrocarbon to increase knowledge building environment eleven-grade students. The Knowledge Building Environment has built students’ knowledge so that when implemented in teaching materials it can support the development of ideas for students but there are still no teaching materials based on the knowledge building environment. We use qualitative descriptive research. Data collection instruments used were structured questions and interviews. This study was conducted at senior high schools and vocational high schools with chemistry teachers. The teacher’s structure question responses were analyzed descriptively for each item. Based on the results of interviews with chemistry teachers teaching materials in the form of the textbook are still a top priority as a learning resource. School facilities have not supported the use of electronic-based teaching materials due to the unavailability of sufficient projectors for, there are no internet facilities, the textbook is the perfect solution. The results of this study are the basis for us in developing chemistry book by 4S TMD models on hydrocarbon to increase knowledge building environment eleven-grade students that can be used in chemistry learning and teaching in upper high schools.
Influence of science digital storytelling against motivation of learning and critical thinking ability learners
Authors: Misrulloh A , Dewi N R
Published: July 2020

The purpose of this study was to analyze the influence of science digital storytelling against the motivation of learning and critical thinking ability learners. The research design used a nonequivalent control group design because it uses two different treatment when implementing learning. The selection of the samples was done randomly (cluster random sampling). The sample in this research is grade VII D (control class) and VII C (experimental class). Data collection methods used are observation methods, methods of test and method question form. The observation method is measured using an observation sheet consisting of five aspects of critical thinking ability. Every aspect of critical thinking ability analyzed is descriptive. The test method is measured using a multiple choice question in the form of reasoned cognitive taxonomy levels based on Bloom. The influence of science digital storytelling against motivation learning seen from biserial correlation analysis results (rb = 0.87). This means science digital storytelling has a very strong influence on the motivation of learning. While critical thinking ability is also seen in biserial correlation analysis (rb = 0.80). Based on the results of the study it can be concluded that the application of science digital storytelling gives a positive effect against motivation of learning and critical thinking ability.