bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of high school students’ science process skills
Authors: Indri O W , Sarwanto  , Nurosyid F 
Published: July 2020

Abstract
This research aims to describe the Science Process Skills of high school students on elasticity material. This research used descriptive methods. The respondents involved in this research were 25 students from XI IPA 2 SMA N 4 Madiun. The instruments used were 10 multiple choice tests and questionnaires for Science Process Skills. Science Process Skills in this research are basic Science Process Skills consisting of 5 aspects of indicators. The indicator aspects of the Science Process Skills in question are observing, concluding, identifying and manipulating variables, predicting and interpreting data. The indicator aspect of Science Process Skills that has the lowest percentage of 30% is the conclude aspect, while the highest skill is the Science Process Skills in the indicatorsaspect of identifying and manipulating variables, and interpreting aspects of data where each indicator has an equal percentage of 50%, for observing indicators have a percentage of 40% and indicators predict by 34%. The results of this study indicate students in SMA Negeri 4 Madiun on material elasticity material have Science Process Skills with an average value of 40.8% which is included in the low category.
Preparation of bioplastic film from gadung starch (discoreahipida) and chitosan plasticized with glycerol
Authors: Hasan M , Afdal D , Nazar M 
Published: July 2020

Abstract
Bioplastic film based on gadung starch (Discoreahispida) and chitosan plasticized by glycerol were prepared through solvent casting method. The aim of the study was to determine the effect of starch and chitosan composition on both mechanical properties and lyophobicity of the films. The results indicated that incorporating the chitosan in the starch matrix induced structural modification due to interaction between hydroxyl functional group and amino group of the starch and chitosan. The films produced in this research exhibit smooth surface, homogeneous and both porosity and cracks were not occurred which was evidenced by Atomic Force Microscopy (AFM) data. The findings also revealed that adding more chitosan in the starch matrix have significantly enhance tensile strength of the film while reduce the extension at break. Films with more chitosan absorbed more water compared to less chitosan film.
The student metacognitive skills and achievement in chemistry learning: correlation study
Authors: Arami M , Wiyarsi A 
Published: July 2020

Abstract
The purpose of this correlation research was to determine the correlation between student metacognitive skills and student achievement. The sample consisted of 180 students grade 10 from all students of class X Senior High School 1 Kasihan. Saturated sampling technique was used to determine the sample used. Metacognitive Awareness Inventory (MAI) quissionaire was used to measure the level of student metacognitive skills. MAI quissionaire consisted of 18 statements with a 5 point Likert scales that ranging from “strongly agree” to “strongly disagree”. The student achievement was measured using the achievement test instruments on ionic bonds and covalent bonds learning. The data were analyzed by using product moment correlation. Result of research indicated that there was very low correlation between metacognitive skills and student achievement. The correlation between student metacognitive skills and student achievement was positive and significant. In other words, if the metacognitive skill is high, then the student achievement are also high.
Analysis of students’ competence in chemistry cognitive test construction based on revised bloom’s taxonomy
Authors: Ramlawati  , Anwar M , Yunus S R , Nuswowati M 
Published: July 2020

Abstract
The test is one of the tools used to measure the cognitive competence of students. The ability to develop tests is one of the competencies teachers and prospective teachers must possess. Revised Bloom’s Taxonomy combines cognitive levels and types of knowledge in constructing cognitive tests. The subject of this study was a postgraduate student in the Chemistry Education Study Program of Makassar State University consisting of 25 people. The purpose of this study was to analyze the students competence in construction of chemistry cognitive tests based on the Revised Bloom’s Taxonomy. This research is quantitative descriptive. Analysis of student competency in developing tests is measured by the test suitability indicators with cognitive levels and types of knowledge. The results of the analysis show that the students competence percentage construction questions level C1, C2, C3, C4, C5, C6 respectively: 98%, 89%, 96%, 89%, 65%, and 60%. The percentage of students competence in tests construction according to the type of knowledge, respectively for the types of factual, conceptual, procedural, and metacognitive knowledge are 84%, 83%, 85%, and 83%. Thus it can be concluded that the student competences in constructing of Chemistry cognitive test based on Revised Bloom’s Taxonomy is in a good category.
Analysis of quantity and quality the implementation of high school chemical practicum in Semarang city
Authors: Nuswowati M. , Sumarni W. , Taufiq M 
Published: July 2020

Abstract
This study aims to analyze the quantity and quality of chemical practicum implementation in SMA / MA (Senior High School). The research method is a case study, percentage descriptive and direct observation in the school followed by cause interviews are rarely carried out or even why it is not implemented at all. The results of the study showed that the practicum of chemistry which should be done starting for class X, XI and XII had 25 practical subjects. There are schools that have determined the usual agenda from the beginning, so that they do not reach 25 practicum programs. The practicum program that has been chosen with consideration can be carried out, and even then only a part of it is implemented. As in SMA A, there have been 22 practicum programs analyzed, in fact only 8 were done, 3 were sometimes done and 11 were never done. Factors that do not implement the practicum are: 1. Less time in implementation, 2. The teacher’s task is too much, 3. Chemicals and materials are expensive. The teacher wants: tools and materials provided neatly. Laboratory staff and technician / laboratory staff should be available, so as to assist teachers in guiding students. The results of this study will be very useful for the long term in overcoming problems not optimal implementation of high school chemistry labs. The practicum program that can always be done, the quality must also be analyzed.
Students’ behaviour towards etno-STEM: instruments for students of etno-STEM based science education
Authors: Reffiane F , Sudarmin  , Wiyanto  , Saptono S 
Published: July 2020

Abstract
The learning process that is synergistic with the development of the current era is very necessary. Local wisdom that is aligned with technology is a challenge. Therefore, this study aims at developing a tool which is functioned to measure students’ readiness towards developing instruments related to etno-STEM based Science Education courses. The selected items were given to the expert team for validation. The initial trial of the initial instrument was done using the main component analysis and Cronbach alpha coefficient. The results of a strong coefficient on each instrument can be used as a reference for implementing etno-STEM based Science Education. The wisdom of the Indonesian people towards the wealth of natural resources and their use is influenced by the lifestyle of the Indonesian people who still tend to be weary. Human resources that are aware of local wisdom and technology and its impact on the environment are needed. Students are as agents of change; developing or not a culture of maintaining etno-STEM based technology friendly local wisdom.
Developing of students worksheets through STEM approach to train critical thinking skills
Authors: Hartini S , Mariani I , Misbah  , Sulaeman N F 
Published: July 2020

Abstract
Research has been carried out with the aim of producing student worksheets using the Science, Technology, Engineering, and Mathematics (STEM) approach to train students’ critical thinking skills that are appropriate to be used in the learning process. The specific objectives of this study are to describe: 1) the validity of worksheets, 2) practicality of worksheets, 3) effectiveness of worksheets, and 4) achievement of critical thinking skills of students. This type of research is research and development with analyze, design, development, implementation, and evaluation (ADDIE) model. The trial subject in this research is 36 eleventh grade students of public high school in Banjarmasin city. The research instrument were the student worksheets validation sheet, the implementation sheet of the lesson plan, the learning outcomes test, and the observation sheet of critical thinking skills. The results showed: 1) the student worksheets developed was categorized as valid, 2) the practicality of student worksheets was categorized as very practical, 3) the effectiveness of students was categorized as medium, and (4) achievement critical thinking skills of students was categorized as sufficient. It can be concluded that, the student worksheets through the STEM approach to train students’ critical thinking skills was appropriate to be used in learning.
Textbook development on character-based active learning strategy using tournament type for elementary School student
Authors: Amini R 
Published: July 2020

Abstract
It was indicated from the results of a preliminary study in Elementary School that textbooks used have not been compiled in the form of themes that are in accordance with the subject matter. The textbooks have also not referred to one of the learning models. They have not involved students’ active learning and have not been able to develop students’ character. This research aimed to develop a textbook using active learning strategy of the learning tournament type with character building for elementary school students. The research used 4D model of Thiagarajan with the steps; define, design, develop, and disseminate. The data were collected using observation sheets, interview guides, questionnaires, character assessment sheet, and test. The data were analyzed using descriptive statistics. The result of the validity test showed that the textbook developed was valid. The result of the practicality test also showed that the textbook was practical to be used in learning. The result of effectiveness test showed that the textbook was effectively helped to improve student’ competence in the knowledge and character domain. The effectiveness of the textbook was based on the result of the effect size of the competence of students’ knowledge which was included in a large category and most of the students’ characters were in a good category.
Validating the design of integrated science-tafseer learning model
Authors: Saputro B , Kuswaya A , Saputra H , Mas’ud M , Widiyanti F 
Published: July 2020

Abstract
The purpose of this study is to obtain the eligibility of integrated science-tafseer learning model design. The type of this research is descriptive research with data analysis using descriptive statistics. The respondents of this study are tafseer lecturers and science lecturers at IAIN Salatiga, Indonesia. The data was collected using the Likert scale questionnaire method. The technique of data analysis was by calculating the average research assessment score conducted by three experts then interpretation was done on the resulting categorized average score. The results showed the average score of assessment on the concept of integrated science-tafseer learning model, namely on the indicators of model rationality, model characteristics, elements of model stages, elements of personal tasks, psychological benefits and physiological benefits, by three experts (science, tafseer and model experts) was 4.58 (very well). Thus the design of integrated science-tafseer learning model is suitable to be used in learning because it has fulfilled the relevance and consistency aspects and contributes to the understanding of integrated science-tafseer for students of Natural science education study program.
Developing d-Worksheets by applying 7 steps of problem-based-learning to enrich students’ critical thinking skills
Authors: Sujatmika S , Wibowo W S 
Published: July 2020

Abstract
Critical thinking is important for students in developing critical thinking skills. Critical thinking is able to determine actions related to a wide variety of information. The benefit of critical thinking is to prevent students from the massive influence of hoax news that is widely circulating today. Critical thinking also plays a key role in making decisions. This ability can be developed in lectures through the right method. To make it more optimal, learning can obviously be managed to use good quality worksheets. The objective of this study is to design a draft of digital worksheets (d-Worksheets) based on the Problem-Based-Learning (PBL) that is valid for improving students’ critical thinking skills. The research procedure used Borg & Gall’s method classified into four steps, namely 1) Analysis of products to be developed, 2) Initial product development 3) Expert validation and revision 4) Small-scale field trials and product revisions. The research results show that the form of d-Worksheets draft using Adobe Flash is compatible with laptops or computers. The draft of d-Worksheets contains information, images, and interactive videos. The draft was designed for the health science lecture on the health topic of a human circulation system, implementing seven steps of PBL, and referring to expected critical thinking skills. Thus, the draft of d-Worksheets is developed to meet the feasibility according to experts, but it requires further revisions. The draft can increase critical thinking skills according to the experts and students’ experiences.
Analysis effect of creativity on the learning outcome of middle-school students in the earth structure and layer topic
Authors: Mukti Y P , Masykuri M , Sunarno W 
Published: July 2020

Abstract
This research aimed to find out the effect of high and low creativity on the students’ learning achievement. This research was conducted at MTs Negeri 2 Surakarta 2017/2018 Academic Year. The research method used was experimental research. The sampling was done using simple random sampling technique. The data were collected using multiple choice objective test to obtain the learning achievement data in the Structure and Earth Layer topic and observation sheet to obtain creativity data. The data analysis used was parametric statistical test with one-way ANOVA test. Based on the statistical analysis performed, it was obtained that the sig. value was 0.000. Because the sig. value is < 0.05, it can be concluded that Ho is rejected. This shows that high and low creativity has an effect on the students’ learning achievement in the Structure and Earth Layer topic. The result indicates that students who have high creativity have higher learning achievement.
Development of creative thinking skills through STEM-based instruction in senior high school student
Authors: Iskandar  , Sastradika D , Jumadi  , Pujianto  , Defrianti Denny 
Published: July 2020

Abstract
Creative thinking is one of the abilities in the 21st Century that must be mastered by students. The difficulty of developing students’ creative thinking is because teachers in the school do not make a collaboration between technology and science in learning. The purpose of this study is to develop creative thinking through the application of Science Technology Engineering and Mathematics (STEM) based learning. This research was conducted at 1 Kerinci Public High School. the sample include 90 Students divided into three classes namely Experiment Class 1 (EC1) are given STEM-based learning, experiment Class 2 (EC 2) given Science Engineering Mathematics Learning (SEM) and Control Class (CC) given conventional learning. The method used is a quasi-experiment with pre-post control design. The instrument used was 12 essay questions validated by 7 experts. The results were analysis using Anava mixed method with the General Linear Model. The results show that STEM-based learning improves creative thinking skills by 0.663 or 66.3% in the medium category, this shows that STEM-based learning is effective in developing students’ creative thinking, STEM-based learning also provides experience to students in collaborating between technological science, engineering and mathematics in optimizing learning.
Eco-literacy-textbook: instructional need to improve students’ environmental awareness in a primary nature school
Authors: Nurlaili S , Sapriya  , Priscylio G 
Published: July 2020

Abstract
This study is aimed to identify the eco-literacy textbook as an instructional need to improve students’ environmental awareness so that it can be taken into consideration in the preparation of textbooks. One of the schools that need to improve students’ environmental awareness through textbook is a Primary Nature School in West Java, Indonesia. Qualitative descriptive method was used in this study. The data collection used observation, interview, and questionnaire. Participants were 15 students in fifth grade and 2 teachers. The result showed that instructional needs of the eco-literacy textbook are the textbook that has images used simple the language, it has material integrated with everyday life and the natural environment. It is equipped with an activity-based outdoor learning worksheet. The sustainable development will be achieved if the instructional needs through this eco-literacy textbook are fulfilled.
The use of financial mathematics to evaluate the feasibility of a water conservation project
Authors: Dwidayati N , Zaenuri  
Published: July 2020

Abstract
This study intended to evaluate the feasibility of a water conservation project from a financial mathematics point of view particularly using Net Present Value (NPV). The research took place in a pharmaceutical industry located in Simongan industrial area, Semarang. The research object was investment documents of the water conservation project. The data were gathered using documentation, observation, and interview method. The data were analyzed using B/C (Benefit Cost Ratio). The results showed that by taking the economic life of the 5-year project, without residual values, the PV proceeds reached IDR 251,327,818.80, while the PV outlay was IDR 93,450,000, and the B / C ratio was 2.69. To conclude, the water conservation project is worth building.
Morphology characterization of bioactivator microorganisms in product of septick tank phosphate degradator
Authors: Amalia A V , Fibriana F , Astuti E Y , Soesilowati E 
Published: July 2020

Abstract
Septic Tank is a shelter for solid materials of human waste (faeces) which will quickly fill up when there is no decomposition process by bacteria decomposers. The amount of bacterial decomposers in a septic tank is generally less compared to the accumulation rate, so it is necessary to supply bacteria decomposers. The addition of these microorganisms is very cheap when compared to the cost of desludging or drying beside being practical, healthy and environmentally friendly. The decomposing bacteria (microorganisms) will decompose the solid materials in the septic tank into water (H2O) and some gas (CO2).Microorganisms that can decompose or degrade human faeces are PAOs (polyphosphate accumulating organisms) by degrading the polyphosphate into phosphate. Microorganisms that play a role in the decrease of phosphates are bacteria and fungi. Aerobic bacteria such as Pseudomonas sp. is one of the phosphate-degrading microorganisms. This research used the Pour Plate and gram staining method for microscopic observation to find the morphology of Pseudomonas sp.
Scaffolding design to improve pedagogical competence of natural sciences for pre-service biology teachers
Authors: Kurnia A R D , Ibrahim M , Widodo W 
Published: July 2020

Abstract
This research aimed to develop the curriculum and module of natural science curriculum development for junior high school subject. This work is a research and development study. The development model used in this research was ADDIE. The results of validator assessment for the suitability of teacher’s qualification standard for the content knowledge = 3.8 (extremely valid). The suitability of teacher’s qualification standard for the content of pedagogical = 3.9 (extremely valid). Then the curriculum is developed into a module. The design of module is according to the principle of scaffolding. The most basic level contains the most complete example of cross-disciplinary integration. The second level is about the integration between sub-disciplines in science, the completeness of the example is reduced. Scaffolding at the highest level, fewer examples. The third level concerns aspects of pedagogical skills. Examples are given in two forms namely Curriculum 2013. Module 2 and 5 gaining 100% responses liked by the students are categorized practical. The hardest one to be understood is module 4. Module 2 is the most effective one in which the students achieved the highest score of 96. Module 3 is the most difficult one to be completed; the students’ mean was 47.
Environmental literacy of high school students
Authors: Prasetiyo  , Irawati M H , Ibrohim  , Saptasari M 
Published: July 2020

Abstract
The goal of this research is to find out the environmental literacy of the tenth grade of Senior High School students. The aspects of environmental literacy presented include knowledge, cognitive skills, and attitudes towards the environment. Research applies descriptive methods. The results of the study showed that the average score of students’ knowledge was 11.5 which was in the medium category, students’ attitude towards environment was 28.5 which was considered as low category and cognitive skills which included issue identification was 5.4 and it was in the medium category, issues analysis with an average of 30.35 was in the low category and the student action plans with the highest percentage of 64.4% was in the form of reporting to the government and asking for a ban on land sales and there was 17.9% of students who did not have an action plan.
Enhancing Mathematical Reasoning: the effects of web-assisted Brain-Based Learning
Authors: Dewi N R , Zahid M Z 
Published: July 2020

Abstract
The purpose of this study was to analyze the improvement of mathematical reasoning abilities comprehensively. This research is a quantitative study. The respondents of this research were students who take the Integral Calculus course at a university in Semarang. This study used a random class method to determine two classes of study samples. One class treated by Web Assisted Brain-Based Learning (BBLW) and another class treated by conventional learning. The results of the study showed that the mathematical reasoning ability of students who get Brain-Based Learning assisted by the web is better than that of students who get conventional learning based on their initial mathematical abilities.
The experimental quest on dimension and material of microsphere for photonic jet microscopy
Authors: Abdurrochman A , Septianingsih E , Amatillah I F , Susedy B S , Khairunissa N C , Safriani L 
Published: July 2020

Abstract
Our previous studies have shown the potential of applying photonic jet for microscopy. However, some parameters concerning the microsphere must be determined before practicing photonic jet for microscopy. This manuscript reports our quest for dimensions and materials of microsphere that fitted for on an optical microscope, experimentally. The main directive in our quest is the largest magnification or the best resolution of the image obtained by the microsphere. We find that if the refraction index ratio is getting larger or closer to two, it needs larger microspheres. On contrary, if the refraction index ratio is closer to one, it needs smaller microsphere.