bluuebunny/crossref_metadata_2025 huggingface dataset:
Kauniyah verse-based science learning: reconstruction of the 21th century science learning program
Authors: Fadly W , Rochmahwati P
Published: July 2020

This study aims to determine the effectiveness of the Kauniyah Verse Based Science Learning (KVBSL) program in optimizing student scientific communication skills. The KVBSL program is the result of the reconstruction of science learning in accordance with 21st century learning and it integrates the Islamic values stated in the Al-Qur’an. It employed developmental research. The population of this research was 436 students at three colleges, and it assigned 112 students by using cluster random sampling. The data was obtained through observation and test. It, then analysed by using t-test formula. The results showed that the KVBSL program significantly improved students’ scientific communication skill. It was characterized by: 1) the scientific communication skills is increased significantly (α=0,05); 2) there is consistent improvement of scientific communication skills in each college; 3) among the aspects of scientific communication skills, the highest average score is on the ability of representation and scientific writing.
The effect of problem-based learning model to students’ cognitive achievement on high and low students’ problem-solving abilities
Authors: Suciati  , Imaningtyas C D , Octovi C , Yuliawanti E
Published: July 2020

This study aimed to determine the effect of PBL model on students’ cognitive achievement on high and low students’ problem solving abilities. This study was quasi experiment research by using posttest only non-equivalent control group design with 22 students of X(3) grader science class as control class (conventional model) and 21 students of X(4) as experiment class (using PBL model) at one of senior high school in Surakarta. Students’ problem solving abilities illustrated as abilities in four aspects: identification the problem, identification the cause of problem, create the method of problem solution, examine the result of problem solving by using 40 items of multiple choice question refers to Problem Solving Skill Test [12]. Students’ problem solving abilities measured before the research is done and divided into high and low categories. Students’ cognitive achievement illustrated as students’ concept understanding and measured by using essay test was given after the PBL model used. Instrument had been validated by expert judgment and students. Data analyze by using t-test. The result showed: 1) Sig. (0,00<0,05) Ho rejected, there was difference of students’ achievement between experiment class and control class; 2) Sig (0,683 >0,05) H0 accepted, there wasn’t difference students’ achievement with high problem solving abilities between low problem solving abilities.
Developing assessment of higher order thinking skills in physics learning based on local wisdom
Authors: Bahtiar  , Sukmawati A , Setiawan T
Published: July 2020

This study aims to develop an assessment of higher-order thinking skills in physics-based on local wisdom. This research through four (4) stages of development: defining, designing, developing, and distributing. The results show that the validity value of 3.94 on the rating scale of 3.0 ≤ SV ≤4.0 with a correct category and can be implemented with small revisions. The practicality of assessment is obtained from the readability of assessment instruments with a percentage of 81%, the level of difficulty of the instrument with a percentage of 72%, and responses from respondents with a percentage of 83%. Assessment effectiveness is obtained from learning completeness, where classical completeness is 100%, and indicator completeness is 90.5%. Thus the assessment of higher-order thinking skills in physics-based on local wisdom can be said to be feasible to be disseminated.
Implementation of blended project-based learning model on astronomy learning to increase critical thinking skills
Authors: Taufiq M , Wijayanti A , Yanitama A
Published: July 2020

This study aims to analyse the critical thinking skills of prospective science teacher students during astronomy lectures by applying a Blended Project Based Learning model. This research is a type of descriptive research with a quantitative approach. The study population was all semester 4 science students of science at one of the state universities of educational staff in Central Java, Indonesia. Students’ critical thinking skills experience a very good change after working on the project. The results of the average score of critical thinking skills that have significance values with medium and high N-Gain criteria. It was concluded that the implementation of Blended Project Based Learning model on astronomy learning able to increase critical thinking skills.
Review of learning strategies to improve creative thinking skills
Authors: Wiyanto  , Sumarni W , Sekarini A P
Published: July 2020

Creative thinking skills are one of the 21st century skills pursued in science learning. This study aims to analyze learning strategies that have been studied to improve students’ creative thinking skills. To achieve this goal, a meta-analysis was conducted on the results of research on students’ creative thinking skills that had been published in scientific journals from 2012 to 2018. A total of 30 relevant articles were obtained. All articles were analyzed using a qualitative approach, by identifying and classifying the objectives and research subjects used as well as learning strategies that had been studied to improve creative thinking skills. The results of the analysis can be concluded that problem-based learning is the most studied model to improve creative thinking skills, especially in senior high school students.
The effectiveness of multicultural education through traditional games-based inquiry toward improving student scientific attitude
Authors: Dewi N R , Saputri E , Nurkhalisa S , Akhlis I
Published: July 2020

Curriculum 2013 provides the opportunity for students to promote learning invites students to actively participate in learning activities, and fun for the learning activity. Lessons are taught by teachers also need to instill the character of the nation based on the principles of Pancasila. This is very important considering the development of information in the era of globalization led to the decline of morality in students, degradation students’ behaviour and identity of Indonesia. This study aimed to analyze the effectiveness of inquiry-based multicultural learning using traditional games in improving the student’s character. The results showed that the average grade higher than the grade experiment control with t-count at 16.0992 to 1.9944 T-Table (df = 70, α = 5%) therefore t-count > t-table then Ho is rejected and Ha accepted. It can be concluded from this study that multicultural education through inquiry-based traditional games can improve students’ character.
Development of plant reproduction props to increase motivation and communication of mentally retarded students in SLB Widya Bhakti Semarang
Authors: Rusilowati A , Khusniati M , Azizah R A
Published: July 2020

This research aims are to determine the development of plant reproduction props to increase the motivation and communication of mentally retarded students in SLB Widya Bhakti Semarang. This research is a research and development that produces development products in the form of plant reproduction props. In this research, the population in this research was eighth grade students of SLB C Widya Bhakti Semarang. Communication skills from 49.3% in the first meeting reached 93.75% in the sixth meeting, learning motivation from 49.5% in the first meeting to 93.5% in the sixth meeting, the average result of the pretest was 7.8 and average the average posttest value is 8.5, and the magnitude of the influence of plant reproduction props uses an effect size of 4,6 which is included in the category very large. Based on the results of the study, it can be concluded that there is a very large influence between plant reproduction props on communication skills and learning motivation of mentally retarded students at SMPLB C Widya Bhakti Semarang.
Pre-service science teachers’ enhancement of environmental care behavior through conservation-based green learning methods (GeLeM)
Authors: Savitri E N , Parmin  , Dewi N R
Published: July 2020

Science learnings provide opportunities to grasp knowledge by constructing and examining explanations of a particular phenomenon. This information is obtained from a scientific process which gives learning experience to students. Green Learning Method (GeLeM) employs natural phenomena as learning sources; therefore, it is suitably applied in science learnings. Green Learning Method (GeLeM) lets students involve in nature learning directly, identifies as well as offers a solution to surrounded environmental problems. Hence, this method is closely related to environmental care behaviour emerged during learning activities. This research intended to reveal pre-service science teachers’ enhancement of environmental care behaviour through Conservation-based Green Learning Method. Data collection process was carried out in the Department of Integrated Sciences, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang on Living Organism Systematics course, odd semester, academic year of 2018/2019. The obtained results showed that ‘GeLeM’-based learnings could enhance the students’ environmental care behaviour. Other than that, the observation results indicated that the students’ environmental care behaviour was seen during nature learnings. Pre-service science teachers must have favourable environmental care behaviour to inherit it to their future students.
Concept evolution of conservation
Authors: Rokhman F , Zaenuri
Published: July 2020

The purpose of this study is to analyze the evolution of the concept of conservation at Semarang State University (UNNES). This research use descriptive qualitative approach. The object of research is various documents related to conservation development and implementation policies, such as chancellor’s regulations and / or chancellor’s decisions, and various other documents. The data collection was used the method of documentation, observation, and interviews. Data were analyzed descriptively-comparatively. The results showed that the implementation of the conservation concept at UNNES was initially supported by 7 (seven) pillars, then reduced to 3 (three) pillars, but it was more comprehensive. The evolution of the concept of conservation accelerates the achievement of UI Green metric.
The synergy model of village development based on environmental education (biotic approach) in Indonesia perspective of Law Number 6 of 2014
Authors: Rodiyah  , Waspiah  , Muhtada D , Utari I S , Arifin R
Published: July 2020

This research is driven from the ineffectiveness of village empowerment in the North Coast of Central Java (Pemalang, Tegal Regency, Tegal City, Pekalongan, and Batang), especially in environmental issues. In fact, the environment is an important part of village development and has the most important contribution to a prosperous independent community according to Law No. 6 of 2014 concerning Villages (Village Law). Environmental development (biotic and abiotic) has a very significant role, and humans as one of the biotic components place a strategic position in the development of the environment in the village. This study aims to produce a synergistic model that combines legal instruments, implementation, and environmental education in rural development. Chamblis and Seidman’s theories (about Law and Society) are used in this study and this study emphasizes that: (1) laws and regulations should be used to achieve social welfare and justice, including in environmental terms, but in fact this is not maximally done, (2) village development as a mandate of the Village Law on the North Coast has not been oriented towards environmental development, so that the use of village funds is ineffective, and (3) the synergy model of village development emphasizes progressive legal principles as one of the tools to encourage law enforcement which is more effective.
Discovery learning model in learning writing of environmental exposition text
Authors: Ratmiati  , Cahyani I
Published: July 2020

The purpose of this study is to describe the discovery learning model in exposition text about the environment around students. The type of this study is quantitative research with the experimental method. The design of this study was static to two groups. The sample of this study were 50 people, 26 experimental and 24 control class. The sample was taken by purposive sampling technique. The results showed the following. First, the expository writing skills of the students using the conventional method are at a more than adequate qualification. The average writing ability of the students is still below the learning standards. Second, the skills of writing exposition text using the discovery learning model are in Good qualification. Students’ ability to write environmental exposition text exceeds learning standard. Based on the results of this study concluded that the skills of writing text using discovery learning model is better than using conventional method learning.
Insecticidal activity of essential oils compared with chemical insecticide against stored-grain pest Sitophilus oryzae
Authors: Subekti N , Indrawati P
Published: July 2020

Stored-grain pest Sitophilus oryzae causes loss of rice in quantitative and qualitative. Until recently, the most frequent ways used to control insect pest is synthetic chemicals that harmful to human health, causing resistance to the pest, and pollute the environment. An alternative solution is offered by natural insecticide. The aim of the research is to analyze the effect of toxicity of three essential oils compared with a chemical insecticide toward rice weevil (Sitophilus oryzae). Bioassay was carried out by fumigation. The essential oil of Myristica fragrans 40 μL g−1 was the most insecticidal than essential oil of Cymbopogon citratus and Eucalyptus sp. with 100% mortality after 48 h exposure. Chlorpyriphos 2 μL g−1 as chemical insecticide generally used had 100% mortality after 24 h exposure. In spite of natural insecticide had longer time and higher concentration to kill insect pest, but it can be used for integrated management of stored-grain pest rice weevil (Sitophilus oryzae) that more safety for human and environment.
Characteristics and validity of SETS-based disaster learning models
Authors: Atmojo S E , Rusilowati A , Dwiningrum S I A
Published: July 2020

This study aims to: (1) describe the characteristics of the SETS-based disaster learning model, (2) test the validity of the SETS-based disaster learning model. This type of research is research and development following the ten steps of developing Borg & Gall. In this study five steps from the ten steps were carried out to produce a valid product according to expert judgment. The research findings are: (1) producing a product in the form of a SETS-based disaster learning model with characteristics having the main elements consisting of: syntax, social system, reaction principle, support system, instructional impact, and companion impact. The learning model produced has met the specifications of the learning model which is complementary to existing products by focusing on the integration of thematic disasters, having a wider level of integration, having a high applicative level, and having in-depth studies and providing detailed and complete information. The SETS-based disaster learning model consists of six stages of activity. The first stage is organization and orientation, the second stage is concept formation, the third stage is Application and conceptualization, the fourth stage is adapting the concept, the fifth stage is Planning and making decisions, the sixth stage is SETS-based Evaluation. (2) SETS-based disaster learning model is feasible to use based on expert judgment. The average value of the model validation score is 102.5 or 85% (very valid).
A conceptual model of the integrated science learning quality assurance
Authors: Mustikasari A , Wiyanto  , Ridlo S , Susilaningsih E
Published: July 2020

The purpose of this study was to : 1) an understanding of quality assurance in science teachers; 2) implementation of the integrated science learning quality assurance; 3) a conceptual model of the integrated science learning quality assurance. The Integrated science learning quality assurance model is a systematic, planned and sustainable process to ensure that learning is carried out according to process standards. This study use evaluation research. The research approach was quantitative descriptive. The data collected by test, observation, documentary study, and literature review. Based on study result, a conceptual model of the integrated science learning quality assurance was proposed. The conclusion of the research is both the understanding of science teachers on quality assurance tends low. Integrated science learning both in planning and implementation shows low scores. A conceptual model of the integrated science learning quality assurance was proposed with implementation of quality procedures application. These activity are analysis of graduates competencies - core competencies - basic competencies, analysis of integrated science, mapping of basic competencies, preparation of indicators net, development of syllabus, preparation of lesson plans, ensure of learning preconditions, implementation of learning, and implementation of assessment.
Development of mobile application upon mechanical engineering students’ learning styles
Authors: Kannapiran S , Kob C G C , Rus R C , Shah A , Dewi N R
Published: July 2020

The use of technology in this era of globalisation is growing from day to seconds. Mobile learning or also known as m-learning is commonly heard lately as we are in the 21st century of education. Mobile applications developed are to enhance m-learning among students. Henceforth, making students engaged to m-learning is only possible when we had identified their learning styles. Current paper presents the development of mobile application for Polytechnic Mechanical Engineering Students (PolyMES) based on the previous analysis of learning styles among premier polytechnic mechanical engineering students in Malaysia. The aim of this study is achieved whereby the design for PolyMES is developed according to these mechanical engineering students’ learning style. The mobile application developed requires the understanding of students’ learning style to enhance m-learning. PolyMES is designed to be user friendly application that enables students to study the subject at their own space. They can read the simple notes with related video and images. In addition, students are able to test themselves with the quiz and exercises given and also view the list of formulas and symbols with sample calculation as a practice. The features available in PolyMES designed to suit students’ different types of learning styles. As known every individual has their own learning styles of retaining new information and skills. Hereby, PolyMES design is developed to cater students using smart phones at various learning style and might be useful for further implementations of m-learning.
The profile of critical thinking and learning outcomes of teacher candidates viewed from gender differences
Authors: Andayani S , Muchtar H , Yufiarti  , Susanto E
Published: July 2020

This research is intended to determine the profile of students’ critical thinking viewed from gender differences and whether there is a correlation between critical thinking and learning outcomes of basic mathematic. This research is a descriptive quantitative design in which 40 Biology teacher candidates as samples. Data collection is conducted through tests. The results showed that: 1) The average level of male student’s critical thinking (53.78) is higher than female’s (52.61), 2) At the high critical thinking level, it was found that (male = 63.25, female = 61.22), in the moderate level: (male = 53, female = 52.15) and in the low level (male = 42.5, female = 42, 3) The highest aspect of critical thinking is assessing credibility (4.28), and the lowest one is producing arguments (3.74), 4) The average level of male student’s learning outcome (70) is higher than female’s (60,68), 5) There is a significant correlation between students’ critical thinking and their learning outcomes. It can be concluded that male students are more critical than female’s and there is a correlation between critical thinking and learning outcomes. Therefore, students are suggested to practice their critical thinking ability.
Viability microcapsules Lactobacillus plantarum Mar 8 and KMar C2 in chocolate (Theobroma cacao L) for probiotic purposes
Authors: Mulyaningsih R D , Nurhidayat N , Mangunwardoyo W
Published: July 2020

Lactobacillus plantarumMar 8 and KMar C2 is a lactic acid bacteria can be used as probiotic. Chocolate have served as antioxidant and beneficial for health, it contains : flavonoids, theobromine, epicatechin, and catechin. Combination between chocolate and bacteria can increased chocolate benefit as probiotic chocolate. Probiotic used to decrease uric acid level in blood if contains 106– 109cfu/g living bacteria. The research purpose study of viability probiotic in chocolate. The assay used in viability research is Total Plate Count. The process encapsulation of Mar 8 dan KMar C2 use 10% milk skim and 3% chocolate fat made into microcapsules with spray drying method. The result revealed microcapsules viability before mix with chocolate 1,925 × 1010cfu/g. After mixing 20 g microcapsules in chocolate, viability decreased 1 log to 1.7 × 109cfu/g and consentration probiotic is 3.4 × 107cfu/g. Chocholate can be used as a probiotic chocolate. Probiotic chocolate will be use to decrease the level of uric acid in blood.
Comparison of pheromone extraction methods for Callosobruchus maculatus (F.) warehouse pest control
Authors: Subekti Niken , Fanidya Alfath , Priyono Bambang , Kartika Titik
Published: July 2020

Callosbruchus maculatus is a warehouse pest that attack many various of nuts. One of the food preservation techniques from the threat of pests in Indonesia is the use of chemical pesticides and fumigants. However, it can interfere the human health, contaminate the environment and non-target organisms. The aims of this study is to compare the extraction method of dimethyloctane dioic acid and analyze the effectiveness of dimethyloctane dioic acid nanoparticles in controlling C. maculatus. The research method consisted of sample preparation, dimethyloctane dioic acid extract, like-dislike test and GC-MS analysis. The results showed that compounds extracted using the sampling headspace aeration method were more effective and right on terget than body extract method. The compound of dimethyloctane dioic acid from body is very high evaporation rate than headspace aeration. The Independent Sample T Test gave significant results between C. maculatus response to headspace aeration and body extract method.
Creative problem solving; implemented study in biology content
Authors: Fatmawati B
Published: July 2020

The form of classical teaching was still the mostly used in teaching and learning form but for certain fields other forms of teaching are needed such as creative problem solving. The purpose of this form of teaching aimed at teaching students to think at a higher order thinking skill, one of which is problem solving that requires creative thinking skills. This study aimed at determining students’ prior knowledge in solving problems creatively using creative problem solving. The focus of this study was a discussion of environmental pollution using the teaching steps of creative problem solving. Respondents were students of Study Program of Biology Education. The research instrument was a discussion sheet with the topic given “environmental pollution”. Data analysis used was descriptive statistics. The results of data study were; (1) the results of the students’ achievement were 6 (34.5%), 7 (20.8%), 5 (17.2%), 8 (13.8%), 4 (10.3%), 3 (3.4%), (2) the results of Creative Problem Solving (CPS) were; clarification 58.6%, ideate 72.4%, and developing 27.6%. It can be concluded that students were less in solving problems creatively in “environmental pollution” material.
The effectiveness of experiential learning model by using mind map to the understanding of concepts on fungi materials at the tenth-grade students of senior high school
Authors: Indriani D , Mercuriani I S
Published: July 2020

This study aimed to find out what experiential learning model by using mind map could increase the understanding of concepts of fungi materials at the tenth-grade students of senior high school. This study was quasi-experiment research that used pre-test and post-test control group design. The population of the research was all of the tenth-grade students at SMAN 1 Kalasan. The technique of getting sample used cluster random sampling technique where X MIPA 4 class became an experiment class, and X MIPA 5 class became a control class. The used instruments in this research contained the observation sheet about the implementation of learning by using experiment learning model and evaluation sheet about the students’ understanding of concepts. The data of the research were analyzed by using t-test (independent sample t-test). The results showed that the significant value (2-tailed) was 0.000 (< 0.05). It concluded that there was a difference of understanding concept between class experiment and control class. It was proved that the learning process through experiential learning model by using mind map could increase the students’ understanding of concepts.
The correlation of learning interest and creativity in writing scientific articles of Indonesian pre-service biology teachers on biotechnology concept
Authors: Sari I J , Ratnasari D , El Islami R A Z , Rifqiawati I , Wahyuni I , Mahrawi M , Ekanara B , Usman U
Published: July 2020

Learning interest need more attention in learning development and it is very important in the learning processs. Pre-service biology teachers will be good learners if they have a good interest in learning. The creativity in writing scientific articles for pre-service biology teachers needs to be developed continuously, because pre-service biology teachers are academics. This study aimed to investigate the relationship between learning interest and creativity in writing scientific articles for Indonesian pre-service biology teachers on biotechnology concept. Survey was employed for the study by investigating 30 Indonesian pre-service biology teachers. The data collection technique used consisted of a questionnaire and a creativity instrument. Spearman’s rank correlation was used in data analysis. The findings showed that α = 1.08> 0.05, it was concluded that there was no statistically significant correlation between learning interest and creativity in writing scientific articles for Indonesian pre-service biology teachers on biotechnology concept.
The profile changes in pedagogical content knowledge of pre-service biology teachers based on the concept maps
Authors: Abidin Z , Susilowati S M E , Prasetyo A P B , Ridlo S
Published: July 2020

Pedagogical Content Knowledge (PCK) is the teacher’s expertise gained since becoming a student. There are changes in PCK for prospective teacher students during lecture and changes can be seen based on the concept map. This study aims to analyze the changing profile of prospective PCK teachers based on concept maps. This study was conducted for biology education students at one of the private universities in West Java during the 2017/2018 school year. Participants are 6 people. Participants are asked to make a speciation concept map during evolution, micro teaching and PPL. Concept maps were analyzed using qualitative descriptive analysis. The results show changes in the concept map that includes changes in the form of concept maps from simple to complex, increasingly meaningful and easily understood as propositions, and only important concepts emerge. Based on this, PCK changes with increasing education and training experience of prospective teachers.
Identification of flavonoid compounds and total flavonoid content from biowaste of local durian shell (Durio zibethinus)
Authors: Masturi  , Alighiri D , Edie S S , Drastisianti A , Khasanah U , Tanti K A , Susilawati  , Maghfiroh R Z , Kirana K G C , Choirunnisa F
Published: July 2020

Flavonoid compound from durian shell biowaste was identified by phytochemical assay and FTIR spectrophotometric methods. Total flavonoid content determined by the aluminum chloride (AlCl3) method using a UV-Vis spectrophotometer. Durian shells, which are a waste that causes the environmental problem, can be used as a source of potentially valuable flavonoid compounds. Flavonoid has antioxidants ability that is beneficial and useful. Durian shell used in this research consists of three types, namely Malika, Malon, and Monti, which are from local Indonesian durian. Based on the result, proximate test analysis showed that three local durian shell samples generally had a water content of 7%, a fat content of 0.9%, the protein content of 4.9%, an ash content of 8.5%, and a 78% carbohydrate content. The results of the analysis of the three durian shell samples did not show significantly different results. Then for the phytochemical assay, three local durian shell samples contained phenols, steroids, and terpenoids, the results of the phytochemical assay showed that there were more phenolic groups than the flavonoid group. The following analysis result is the functional group of three samples using Fourier Transform Infrared (FT-IR) spectrophotometer shows that the three types of durian shell samples have a band that is slightly different from the standard, but the number of waves in this band is similar to the standard quercetin. Then for total flavonoid levels in local durian shell using the aluminum chloride (AlCl3) method, the result is Monti durian shell having higher flavonoid levels, each 0.405 ± 0.002 mg QE/g, compared with each other shell type namely Malika and Malon of 0.321 ± 0.003 mg QE / g and 0.324 ± 0.002 mg QE/g, respectively. Thus in this study shows that Indonesian local durian shell contains significant total flavonoid content without the need for extraction. Samples were only dissolved with ethanol solvent, then a series of tests were carried out, then a series of tests were carried out, ranging from phytochemical assessment, FTIR spectrophotometer, and AlCl3 methods to determine the total flavonoid content through quantitative.
The implementation of NGSS-oriented learning at engineering skill programs in a vocational high school: analysis of students’ cognitive and psychomotor profiles
Authors: Lia R M , Rusilowati A , Isnaeni W
Published: July 2020

Oriented learning NGSS developed to Increase the involvement of students in STEM learning, This study aimed to dsetermine the profile of the student’s ability in psychomotor and cognitive class X VHS1 and 7 Semarang. This class is a class that is used for implementation NGSS oriented learning chemistry. NGSS dimension is taken PS1B: Chemical Reaction (DCIS), Planning and Carrying Out Investigations; Using Mathemathic and Computational Thinking (SEPS) as well as the System and System Models (CCs), This study was included in the descriptive quantitative research. The subjects of this study were 130 at the 10th class of State VHS 1 and 7 Semarang Engineering Skill Program of AE and ME. Data were Analyzed using Rasch models with IRT approach. Percentages of students ‘psychomotor abilities AE and ME reached the MCC (Minimum Criteria of Completeness) respectively 63% and 60%, whereas the results of students’ cognitive AE and ME Reached the MCC respectively 6% and 52%. Reviews these based on the data it is concluded that the profile of students in the NGSS oriented learning of AE better in psychomotor aspects, while students ME better in cognitive aspects.
STEAM-deaf learning model assisted by rube goldberg machine for deaf student in junior special needs school
Authors: Rusilowati A , Ulya E D , Sumpono I
Published: July 2020

The 2013 curriculum has been applied in Special Needs School. STEAM can be taught in deaf classrooms using hands-on project for giving students experience working in cooperative team. This paper provides the research of STEAM-Deaf model learning and utilization of Rube Goldberg Machine (RGM). It is aimed to determines characteristic, effectiveness and practical of this model. The method uses Research and Development with single participant design. This research was conducted at SLB Ungaran. The result of research shows that the characteristic STEAM-Deaf consist of syntax with six phases namely observation, research, planning, application, analyze, and evaluation. The support system was STEAM lesson plans, RGM, and worksheet. The reaction system was teachers playing a role as a guide, facilitator, and motivator. The instructional effect showed that the enhanced student’ understanding in cognitive aspect and growing students’ science creativity skill. The nurturant effect showed that students dare to do experiment, independent, and build good team work. The effectiveness of models’ to be analyze with effect size (d). The mean of deaf students’ understanding in cognitive ≥ 0.2 with high criteria. The percentage of science creativity skill, with very good and good criteria. The practical results obtained a percentage average based on deaf student and teacher with practical criteria. Based on the result of this study, it can be concluded that STEAM-Deaf model learning with utilization of RGM is practical and effective for enhancing deaf student’s cognitive aspect and for growing their science creativity skill.
Development and effectiveness of integrated science learning modules using vogarty integrated method based on Al-qur’an verses complementation
Authors: Astuti B , Ihwanudin M , Kusuma H H , Yulianto A
Published: July 2020

Science is easier for student to learn if it is taught in a manner which integrates scientific disciplines. In addition, when science learning taught in conjuction with religion it will enhance the religious character of students. However, schools have not implemented this integration of science and religion due to a lack of learning resources. The purpose of this research is to determine the level of validity, legibility, effectiveness, and practicality of the teaching material developed. This research uses the research and development method. The validity and practicality of the teaching material was tested using a questionnaire. Furthermore, for readability and effectiveness the test method was employed. The effectiveness test of teaching material is limited to improving students’ cognitive domains. The results showed that the teaching material is valid, easy to understand, effective and practical to use in teaching process.
Synchronization of a camera and x-ray tube in digital radiography system in UNNES medical physical laboratory
Authors: Susilo S , Purwaningsih P , Darsono T , Dewi A L , Taufiq U A , Setiawan R
Published: July 2020

Much development of medical devices has been made in the field of radiology. An example is the development of analog radiology into digital radiology. The result of a digital radiographic x-ray is a digital radiograph that can be processed further with image processing techniques. After that it can be printed (printed image) or sent by a teleradiology method. To increase the digital image results, a delay was needed between the opening of the camera lens and the x-ray exposure. Then a delay circuit optimization is needed between the DSLR (digital single lens reflex) cameras, and x-ray exposure on Arduino Uno-based analog radiographs which are used as a unit delay and relay. In the unit delay, a push button triggered a millisecond, so that the Arduino IDE program was needed to set a delay. The relay functioned as a separator between the DC (Direct Current) on the camera and the AC (Alternating Current) on the x-ray tube. The results obtained were that the longer the x-ray exposure, the more intensity. Variation in delay time was regulated in the Arduino IDE program to get the best image quality with the least intensity of light to reduce radiation side effects in patients.
Low-cost imaging spectrophotometer system for absorbance measurement
Authors: Listiaji P , Suparta G B
Published: July 2020

The spectrophotometer system is widely used for testing the concentration of chemical elements in a liquid because it is sensitive and non-destructive. However, modern spectroscopic systems are expensive, and they have complex instrumentation. This study was to develop a low-cost imaging spectrophotometer system, consisting of a halogen lamp as the visible light source, CMOS camera as the detector, and monochromatic filters with a wavelength outputs of 645.53 nm (red), 510.04 nm (green), 488.24 nm (blue), and 475.02 nm (violet). In this research, we tested 3 types of sugar solutions (i.e. glucose, fructose, and sucrose) with varied concentrations (0%, 10 %, 20 %, 30 %, and 40% respectively). Sample images were captured using the camera to produce 8-bit digital images. The intensity of light transmission after passing through the sugar solution sample was measured based on the grey values in the sample images. Differences in sugar concentrations can be observed by measuring absorbance. Absorbance measuring showed that increase of absorbance is directly related to an increase of sugar solution concentration. Maximum absorbance for all types of sugar is obtained through the use of violet light (475.02 nm). In addition, there is a linear relationship between sugar concentration and absorbance, where the coefficient of determination (R2) is 0.99. The slope difference of the linear absorbance graph between the three types of sugar samples shows differences in radiation absorption characteristics.
The natural grating method in determining family heredity
Authors: Ellianawati  , Budhiman A
Published: July 2020

Human hair is one of material used to identify heredity of an individual. There has been a lot of researches done by scientists in sophisticated ways to test inheritance based on hair characteristics. However, to teach this uniqueness at the school level can be done with a simple test. One of them with natural grating method. This study aims to analyze the interference patterns produced by hair from the diffraction process. Five non-blood related families were examined. A beam of 800 nm wavelength from the laser is passed through the hair and its lattice width is calculated. Lattice gap data obtained are then calculated the correlation value between mother and child father. The results of this simple analysis are not enough to support the inheritance relationship of one family. Obtained mystery figures that still need to be studied further. But found one family with twins who have the same width of hair gap. This finding is certainly very interesting to be taught to students at the school level.
Effective gamma irradiation dose on viscosity and molecular weight reduction of chitosan
Authors: Marianti A , Anggraito Y U , Christijanti W
Published: July 2020

Chitosan is a potential natural blood lead chelating agent. In order to improve its chelating capability, the solubility of chitosan must be enhanced. It is an essential property which is also closely related to molecular weight and viscosity. One of the most renowned and effective methods to reduce the molecular weight and viscosity of a certain particle is irradiation. This research aims to examine the effect of Gamma 60Co irradiation upon molecular weight and viscosity of chitosan. 80 mesh chitosan was irradiated using Gamma 60Co with different doses (0, 50, 100, and 150 kGy). This process was carried out using gamma irradiator in the Centre of Isotopes and Radiation Application at BATAN (National Nuclear Energy Agency). Viscosity and molecular weight measurements were conducted using the viscosimetric method in the chemistry laboratory of FMIPA UNNES, while molecular weight was calculated using the Mark-Houwink equation. Results showed that the specific viscosity of chitosan decreased after the irradiation process from the initial specific viscosity of 4.98 η (0 kGy dose) to 3.28 η (50 kGy), 2.87 η (100 kGy), and 2.09 η (150 kGy). A similar trend was also found in the molecular weight of chitosan from the initial molecular weight of 2.10×105 kDa (0 kGy dose) to 1.25×105 kDa (50 kGy), 1.04×105 kDa (100 kGy), and 5.72 × 104 kDa (150 kGy). It was concluded that Gamma Co60 irradiation decreases the viscosity and molecular weight of chitosan by the effective dose of 150 kGy.
Guided inquiry assisted by edmodo application to improve student critical thinking skills in redox material
Authors: Dewi R K , Wardani S
Published: July 2020

Guided inquiry is a learning model that encourages students to practice their thinking skills by asking questions and getting answers on the basis of curiosity. The Edmodo application is an E-Leaning based media designed to manage classes and assignments online so students can connect directly with their teachers and classmates. The purpose of this study was to determine the increase in students’ critical thinking skills towards the implementation of guided inquiry model assisted by Edmodo application on Redox material. The sample uses cluster random sampling, namely 3 classes from X MIPA in SMA Negeri Semarang. The variables studied were indicators of students’ critical thinking skills with experimental design pre-test and post-test. The improvement test used a Normalized Gain Test (N-gain) the amount of N-gain in the control class is 0.6 in the medium category, and 0.7 in the high category in experimental class 1, and 0.72 in the high category in experimental class 2. The influence between variables produced a large correlation coefficient of cognitive learning outcomes of the experimental class 1 of 0.319 and in experimental class 2 of 0.408. The influence between variables produces a biserial correlation coefficient of experimental class 1 amounting to 0.319 and experimental class 2 of 0.408. The influence between variables produces a coefficient of determination of the experimental class 1 of 10% and experimental class 2 of 17%. The results of the study showed an increase in students’ critical thinking skills in both the control and experimental classes. The critical thinking skills students who were given the guided inquiry assisted by the Edmodo application in the experimental class were better than students who were given guided inquiry without the Edmodo application in the control class on the Redox material.
Titaneon: the eco smart lamp to degrade cigarette smoke pollutants
Authors: Lathif Y F , Marwoto P , Iswari R S
Published: July 2020

The purpose of this study is to find out the results of the “TITANEON” degradation power test on hazardous CO (carbon monoxide) compounds qualitatively and quantitatively and to explain the working system of the lamp. The research methods used in this study are (a) preparation: tools and materials, design testing tools; (b) conducting research: TiO2/Co synthesis, coating, tool performance test and data processing and analysis; (c) evaluation. The test results in this study were divided into two, namely qualitative and quantitative. In the qualitative test results, the “TITANEON” lamp is able to degrade CO compounds for 20 minutes. The quantitative results from 0 minutes amounted to 15526.24 ppm, 5 minutes later the CO concentration was 6202.82, in the next 15 minutes CO concentration was 2549.98 ppm and in the last 20 minutes the CO concentration was 1871.89 ppm. The system works, namely the first light that involves TiO2 nanoparticles will excite electrons from the valence band to the conduction band while producing positive holes in the valence band and negatively charged electron pairs. After that, TiO2 nanoparticles are transformed into super oxide compounds which release active oxygen species (O2 radicals and OH radicals), these compounds will degrade cigarette smoke compounds into CO2 and H2O compounds through photocatalytic mechanisms.
Nature of science questionnaire for students, Indonesian version: factor analysis, reliability and validity
Authors: Santiani  , Purwantoyo E , Wiyanto W , Ridho S , Iswari R S , Marwoto P , Rusilowati A , Sudarmin S , Ngabekti S
Published: July 2020

There are already many questionnaires on the nature of science that are used in general, but it is still very rare for Indonesian version. This study developed an Indonesian version of questionnaire on the nature of science for students. The questionnaire consists of 27 items with nine dimensions as result of literature study. The questionnaire was validated by 12 experts with improvements to several items. Questionnaire is reliable with 11 items are valid. Factor analysis shows that this questionnaire consists of ten dimensions that is not in accordance with the grid arranged. Excess dimensions of factor analysis occur because these dimensions are closely interrelated so that their indicators are difficult to differentiate. This tested questionnaire can be used to see the students’ views on the nature of science. To compile the next questionnaire on the nature of science, we recommend that the dimensions be simplified; the dimensions that are closely related should be made into one.
The determination of fluid viscosity using tracker-assisted falling ball viscosimeter
Authors: Akhlis I , Syaifurrozaq M , Sugiyanto  , Marwoto P , Iswari RS
Published: July 2020

This study intends to determine fluid viscosity. The method adopted was the utilization of a tracker-assisted falling ball viscosimeter. The falling ball viscosimeter was employed to get the motion of objects in the fluid, which was then recorded with a video recorder. The motion of objects in the video was analyzed by tracker software to get the terminal speed value of objects in the fluid. The value of fluid viscosity was then calculated using Stokes’ law. The results showed that the liquid viscosity value was 1.298 N.s/m2.
Designing e-learning based independent learning activity unit through virtual worksheet: improving student’s 4Cs
Authors: Aziziy Y N , Sulhadi  , Marwoto P , Iswari R S
Published: July 2020

The subject of Physics at Sumenep Senior High School grounded in 4C’s (Communication, Collaboration, Critical Thinking, Creativity) has not yet been deliberately developed because of the lack of learning tools oriented in the 4C’s. Independent Learning Activity Unit (UKBM) as teaching systems that develop 4C’s can be used to enable students to solve problems. In this research was to create e-Learning Independent Learning Activity Unit teaching are developed through Virtual Worksheet which can improve the student 4C’s. The development of teaching tools was conducted in five major steps (Analysis, Design, Development, Implementation, Evaluation). The characteristics of the UKBM e-Learning are developed through problems on a virtual worksheet, which must be solved by students. This study material is centered around students and must be completed individually and in groups. The results showed that teaching systems were valid. The effectiveness of teaching systems based on concept understanding was increased by an average N-gain of experimental class which are respectively classified as high category. The feasibility of the teaching systems on the treated (experiment) class from the first until the seventh meeting was in a good category. The teacher and students responded positively to the teaching systems in the classroom.