bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis of hydrokxyapatite based duck egg shells using precipitation method
Authors: Malau N D , Adinugraha F
Published: June 2020

The need for implants increases with the high number of fracture sufferers resulting from accidents both on the road and workplace accidents. Bioceramics is a ceramic product or component used in the medical and dental industry, especially as an implant or organ replacement. Hydroxyapatite is one type of bioceramics that is widely used because it has osteoconductive properties (can stimulate bone growth), bioactive and biocompatible. This study aims to reduce and add value to the use of duck egg shells waste. This research method consists of three stages, namely: calcination of duck egg shells, HA synthesis with the wise drop precipitation method and Characterization using XRD and SEM to identify the phase, lattice parameters, and crystal size and determine the morphology of the sample which has been synthesized. HAp synthesis was carried out by reacting CaO from duck eggshells with phosphate source (NH4) 2HPO4 using precipitation method at 1000°C sintering temperature for 5 hours and calcination time for 4 hours. Based on the results of the XRD analysis showed the purity of the Hap sample. While the SEM test shows the morphology of the HAp sample.
The effect of applying fertilizer of moringa leaf (Moringa oliefera) extract and rice washing water to the growth of pakcoy plant (Brassica rapa L. spp. Chinensis (L.))
Authors: Sari P N , Auliya M , Farihah U , Nasution N E A
Published: June 2020

The hydroponic system is increasingly popular in Indonesia. In 2014, 597,674 tons of pakcoy were harvested from hydroponic products. However, the hydroponic system uses mix AB fertilizer which is relatively expensive. Moringa leaf and rice washing water have high mineral and vitamin content. There are cytokinin in moringa leaves which are useful for growth so that they can be used as organic liquid fertilizer. This study aims to determine the response of pakcoy growth to the provision of organic liquid fertilizer made from moringa leaves and rice washing water which is relatively cheap. Organic liquid fertilizer is made through the process of moringa leaf fermentation and rice washing water. The treatment given is in the form of 40% AB mix and 60% fermented organic liquid fertilizer. This treatment showed the results in the form of increased leaf size, number of leaves, stem diameter and weight per sample. The addition of organic liquid fertilizer to Pakcoy resulted in an increase in leaf width and length, number of leaves and weight per sample.
Factors to increasing the employee performance through knowledge management systems implementation at PT. XYZ
Authors: Sardjono W , Mukhlis M , Selviyanti E
Published: June 2020

Organizational ability to manage knowledge is becoming increasingly important in the current era of globalization and the industrial revolution era 4.0, especially for companies. By optimally managing knowledge in the company, the business processes in the company will be effective and efficient. In order to obtain high effectiveness in the process of sharing knowledge that already exists in PT. XYZ, the evaluation of the implementation of knowledge management systems is needed to find out how to manage knowledge optimally. The purpose of knowledge management is to transform the knowledge possessed by employees into explicit knowledge owned by an organization where employees work, so that the effectiveness of knowledge management can be used to improve employee performance and employee knowledge can be maintained properly, so as to provide more benefits for the company, especially for handling customer complaints. All knowledge held by the company must be disseminated so that the company's core knowledge can be developed and knowledge management as an instrument in achieving company or company goals. Knowledge Management Systems are the main facilities for sharing the knowledge and experience of employees. So, the evaluation process is needed to find out how the process of knowledge transfer can affect KMS performance to improve employee performance. The analytical method to analyze the implementation of management in PT. XYZ is to use factor analysis and the questionnaire will be processed using factor analysis to obtain new factors that can be used as forming factors for evaluating the implementation of existing knowledge management systems to be competitive advantage
In silico anti-inflammatory activity evaluation of some bioactive compound from ficus religiosa through molecular docking approach
Authors: Utami W , Aziz H A , Fitriani I N , Zikri A T , Mayasri A , Nasrudin D
Published: June 2020

This tree generally is used as traditional medicine for several ailments. In this research, the In Silico approach using molecular docking has been applied to 11 compounds from the Ficus religiosa to the cyclooxygenase-2 (COX-2) receptor. This study aimed to predict the ability of 11 compounds from the Ficus religiosa in inhibition COX-2 enzyme as a prostaglandin source. The detailed information was obtained using the molecular docking approach. Docking simulation for 11 compounds was executed through AutodockVina embedded in MGL Tools 1.5.6. The lowest binding energy of the complexes was visualized by using Discovery Studio (Biova) software. It was found that campesterol provided the lowest binding energy to COX-2, while kaempferol strongly was tied to TYR385 and SER530 of the receptor. The compounds containing anti-inflammatory effect have the lowest binding energy, and binds to the residue as native ligands. This result is indicated that the compounds from Ficus religiosa have potency as an anti-inflammatory agent. Still, advanced research is needed to examine more ligands from Ficus religiosa to isolate the best conformation.
Community structure of fruit tree species on successful marginal land conservation in Jombang Regency, East Java Province, Indonesia
Authors: Zulfikar  , Arisoesilaningsih E , Indriani S , Fernandes A A R
Published: June 2020

Jombang Regency has critical land, especially in the north of the Berantas river due to a decrease in land quality including land, topography, climate, and water. This study aims to identify the structure of the fruit tree community in degraded land and the success of conservation from the cultivation of the surrounding community. The results of the study have identified 229 individuals from 21 species of fruit trees with 14 tribes on observation in 11 research sites. Analysis of fruit tree species abundance showed that longan and mango had the first and second-largest abundances with the relative abundance of 24.0% and 21.4%, respectively from the Sapindaceae and Anacardiaceae tribes. While the smallest relative species abundance is shown by melinjo with a value of 0.4%. Based on the analysis of the main components, it shows that the value of the longan and mango variance is quite high, indicated by the vector lines that move away from the centre, and while other species tend to gather at the centre because of the variance value is low. The grouping of individual fruit tree plants forms five groups and there are three species of fruit trees that are not included in the group because this species group has a fairly low AU / BP value of 51/10%, namely mango, guava, and star fruit. The results of this study indicate that the structure of fruit tree communities in degraded lands is more dominated by plants from the Sapindaceae and Anacardiaceae families which generally grow spread in 11 sample villages in the study area.
The development of student worksheet based on islamic values in the basic laws of chemical calculations
Authors: Mayasri A , Magfirah I , Nurbayani  , Utami W , Nasrudin D
Published: June 2020

The relationship between the basic values of the Quran in students life will be a reference to how students learn deeply and develop the knowledge gained. This was related to the core spiritual competencies that are expected to be possessed by students after completing one level of education in Aceh. The aim of this study was to produce student worksheets based on Islamic values in the Basic Laws of Chemical Calculation. Method of this research was R&D with the development model of ADDIE. The subjects of this study were students of class X IPA 3 of Inshafuddin Senior High School in Banda Aceh. Based on the results of the needs analysis, the students' worksheets based on Islamic values in the basic law of chemical calculations were needed. The results of the validation with an expert team that was equal to 89.4%, indicating that the student worksheets are possible to be tested. The positive responses of the questionnaire of students were obtained by 80.90%. Based on these results, it can be concluded that the development of students' worksheets was feasible.
The assessment of understanding biological concepts: a systematic review
Authors: Wulandari T , Ramli M , Muzzazinah
Published: June 2020

Assessment is one of the most important components in learning strategies are used to improve student learning and achievement check. The purpose of writing this article is used to determine the types of assessment on the understanding of the concept of biological material, material characteristics, and influences assessment of the understanding of biological concepts. This article discusses the 20 articles published in international journals from 2004 to 2019. The article analyzed the author obtained from database 6, which is Google Scholars, ScienceDirect, CBE, and Taylor & Francis. The analysis showed that the assessment is used to determine the understanding of biological concepts, are the concept of inventory, diagnostic tests, molecular and cell biology assessment, measuring of understanding macroevolution, genetic concept assessment, Gen-bio MAPS, biology core concept and multiple-choice instrument with a drawing activity. Forms of matter used in the form of multiple-choice, multiple-choice T / F, and an open-ended question. Topics to be used in the assessment of understanding the concept, are Plantae, genetics, molecular biology, evolution, microbiology, and photosynthesis. The assessment has used the positive and negative impact on the understanding of biological concepts.
Chemistry Acoustic (Chemcoustic): Android Based Application for Fun Chemistry Learning
Authors: Mugitsah A , Irwansyah F S , Subarkah C Z
Published: June 2020

Learning media are used to facilitate educational practices, both in terms of administration and as a tool in teaching and learning activities. Music and dynamic images are effective stimulants of the brain's work in developing eidetic intelligence, remembering visual information with high-level photographic accuracy. Making Chemcoustic application as audio visual media aims to develop students' learning abilities in understanding chemical concepts based on chemistry representations, by utilizing Android-based technology. The making of the application is carried out with the design stages of the application design in terms of the display, content, and lyrics of chemical songs, making music arrangements, song validation, application making, testing, and evaluation. The trial was conducted on 40 fresh graduated high school students using C1-C4 type test instruments in the form of pre-test and post-test. Based on the t-test quantitative analysis, the calculated t value is greater than the t table value, and the average gain score of the post-test (52.8975) is much greater than the average gain score pretest (15.68). Qualitative observation shows that learning using Chemcoustic applications is conducive, enthusiasm and activeness of students increases significantly. Chemcoutic application is effective as a medium of chemistry learning, as well as science learning that demands complex concepts with macroscopic, sub-microscopic, and symbolic representations.
The metacognition of elementary students in object change learning with SQ3R (Survey, Question, Read, Recite and Review)
Authors: Fadilah I N , Suratno  , Prastiti T D , Dafik  , Hobri
Published: June 2020

Implementing education highly important to be prioritized. The competitiveness field requires teachers to put an effort in designing learning activities that aligns the demands of society and the quality of education. This study uses a 4-D model development procedure that aims to produce worksheets in accordance with the SQ3R steps in learning objects changes. Students’ worksheet with SQ3R was conducted on students 5th grade in SDN 1 Mimbaan and SDN 2 Mimbaan. Measurement of metacognition skills was performed by using MAI (Metacognitive Awareness Inventory) questionnaire. Assessment of students' mastery of concepts was obtained through pre-test and post-test scores. The N-gain (g) of metacognition skills of SDN 1 Mimbaan students was 0.43 and the N-gain value (g) 0.53 of SDN 2 Mimbaan students indicated to the medium category. N-gain (g) of concept of SDN 1 Mimbaan students was 0.48 and the N-gain value (g) of SDN 2 Mimbaan students was 0.59 which also fell in the medium category. In conclusion, the worksheet has met the criteria of valid, practical, effective and in accordance with research objectives in empowering metacognition skills and mastery of elementary students' concepts.
The implementation of somatic, auditory, visualization, intellectually (SAVI) learning approach to improve students’ attention toward mathematics learning
Authors: Istiqomah A N , Kurniawati I , Wulandari A N
Published: June 2020

This research aims to describe the process of implementation Somatic, Auditory, Visualization, Intellectually (SAVI) learning approach to improve students’ attention toward mathematics lesson. The data were obtained from the result of questionnaire and observation. The success indicators in this research was the average of students’ attention reaching 70%. The results of this research showed that learning steps by using SAVI could improve students’ attention, the result as follows; 1) pre-activity: teacher delivered the purpose of the learning, apperception, and motivation. 2) main activity: the teacher explained learning materials, divided students into 4-5 persons to discuss the problem in a worksheet, the teacher guided students to solve the problem, gave chance to present the discussion result, then teacher held games that involve students’ sense tools as training for the learning materials. 3) post activity: the teacher together with students conclude the lesson and ask students to review the lesson at home. Based on the questionnaire result, the average of students’ attention in last cycle is 77,61%.
The effectiveness of implementation research-based learning model of teaching integrated with Cloud Classroom (CCR) to improving critical thinking skills in an astronomy course
Authors: Ridlo Z R , Dafik  , Nugroho C I W
Published: June 2020

The research aims to compares the modern class (experimental class) and traditional class with the traditional teaching style. Experiment class applies research-based learning methods integration with Cloud Classroom (CCR), and Traditional Classroom teaches with direct explanation and figure from the several textbooks of Astronomy. This research used triangulation methods. The quantitative methods were applied to analyze student achievement tests according to Critical thinking criteria. The qualitative method was applied using observation of student activity and interview for the selected student. Student achievement test followed by pretest, and post-test quasi-experimental research. The data analysis of the post-test indicated a value of sig (2-tailed) 0.002 where p≤0.05, which implied the student achievement on critical thinking skills criteria in the experimental class was better than that in the control class. The activity of students in the experimental class reached 49% as the highest activity for very active activity, 23% active, hesitate 14%, inactive 7%, and very inactive 7%. Based on this result, the implementation of research-based learning integrated with CCR is proven effective in improving student critical thinking skills Astronomy course.
Developing mathematical reasoning problems type two-tier multiple choice for junior high school students based on ethnomathematics of jember fashion carnaval
Authors: Ambarwati R , Sunardi  , Yudianto E , Murtikusuma R P , Safrida L N
Published: June 2020

Reasoning is the foundation of learning mathematics. If students' mathematical reasoning abilities are not well-constructed, students who learn mathematics will consider these abilities only as material based on a series of procedures and imitate examples without knowing their meanings. The purpose of this research is to produce an effective product used in the classroom learning process, in this case, Web-Based Two-Tier Multiple-Choice questions. The TTMC questions to be used are specified to the mathematical problems of two-variable linear equations with complex mathematical situations for concluding. At the first tier of the TTMC, students are asked to choose answers to questions related to the context being discussed, in this case, the SPLDV concept, while at the second tier, students choose the reasons from the answers they have chosen at the first-tier questions. At the first tier, students are expected to use their understanding in solving various problems, while the second tier is more appropriate to be used as a benchmark for the extent of student reasoning in solving problems at the first tier. Utilization of the JFC cultural festival as a context in learning mathematics based on ethnomathematics is expected to help students in Jember and its surrounding areas to obtain an optimal understanding of mathematical concepts because culture plays an important role to be integrated into mathematics learning. This research is categorized as valid (3.85 out of 4.00) based on the assessment from the validators. The problem of two-tier multiple-choice mathematical reasoning in this study is categorized practical (90.3%) based on observation on teacher activities and suggestions from practitioners. The problem of two-tier multiple-choice mathematical reasoning in this study is categorized effective based on student test results (77.27%), observation on student activities (88.02%), and student response results (84.5%).
Development of remedial mathematics learning based on lesson study for learning community against students' problem solving analysis capabilities
Authors: Purwandi D , Susanto  , Hobri
Published: June 2020

This study aims to develop remedial mathematics learning tools based on Lesson Study for Learning Community (LSLC). This research uses a mixed method that combines two previous forms of research, namely research and development and experimental research. The subjects of the research were grade VII students. This type of research is a step of research by combining two forms of research that have been there before, namely the development of research and experimental research. The learning instruments developed in this study were on the material for the addition and subtraction of integer in grade VII SMP including Learning Implementation Plan, Student Worksheet, and Learning Outcomes Test. After obtaining a valid, practical, and effective device, the device is then tested in the experimental class to find out whether there is an effect on students problem solving abilities. homogeneity test shows the value of sigh. 0.671 on the pre test and 0.450 in the post test so that it can be concluded that the assumption of homogeneity of variance is fulfilled. Based on the results of the validity, effectiveness, and practicality test, the researcher concluded that the learning platform through bridge games and Lesson Study for Learning Community (LSLC) is a valid, effective, and practical device. At the time of the field trial research was also carried out. From the results of the test differences in problem solving in the two classes using the Mann Whitney Test shows the value of sighing. 0,000 (p<0.05), so it can be concluded that there are differences in problem solving between the control class using conventional instruction and the experimental class using Lesson Study for Learning Community (LSLC) based remedial learning with significant results so that when compared with conventional methods this device gets higher results than in students who use conventional methods.
Biotechnology concept: questioning of analysis with lesson study for learning community (LSLC) for higher ordered thinking skill on coffee area plantation
Authors: Suratno  , Komaria N , Hobri  , Husniah F , Novenda I L , Fahroyin M
Published: June 2020

Students often have difficulty when completing analysis level questions. An important strategy used in learning is through lesson study to improve students' weak points. The purpose of this study is to describe the ability of students to solve problem analysis problems with the lesson study for learning community. The research methods used were tests, observations, and interviews. The research subjects consisted of 36 high school students in Biology subject to the concept of Biotechnology material. The concept of Biotechnology material includes the concept of basic of Biotechnology, mechanism of Biotechnology, concept traditional Biotechnology, and advance Biotechnology. Components of analytical problems that students solve include the analysis of the elements or elements of the concept of learning material, the relationship between parts of the concept of learning material, and the organization between the concepts of learning material for Biotechnology material. This research is a descriptive study. Analysis of students' ability to solve analytical problems is done through video tests and analytical methods. The results showed that students' ability to analyze questions with lesson study for learning community on high, medium and low abilities was different
Analysis of difficulties in solving mathematical problems categorized higher order thinking skills (HOTS) on the subject of rank and shape of the root according to polya stages
Authors: Ernawati  , Sutiarso S
Published: June 2020

Destination of this research is to identify difficulties faced by the students in solving mathematical problems HOTS categorized on the subject of rank and shape of the root. This research was classified as descriptive research with a qualitative oncoming. In this study, researc subjects numbered 115 students, after going through data reduction, the data focused on 4 students representing high, medium, and low abilities, to precede the process of looking deeper into the process of working on problems based on Polya's stages. Data collection techniques in this study were observation, tests, and interview. In this study, the authors used persistence observation techniques and data triangulation. Based the results and discussion of study showed so as 62.54% of students had difficulty understanding the problem, 70.62% of students had difficulty thinking of a plan, 79.68% of students had difficulty implementing the plan, and 87.16% of students had difficulty reviewing. Difficulty factors in solving mathematical problems categorized HOTS on the theory of rank and shape of the root is students do not understand what is called a problem, students aren’t able absorb information properly, weaknesses prerequisite concepts owned by the student, the student aren't careful and thorough the process, lack experience students working on math problems categorized HOTS, and lack student experience in working on story problems.
STEM Learning and its Barrier in Schools: The Case of Biology Teachers in Malang City
Authors: Susilo H , Sudrajat A K
Published: June 2020

The purpose of this paper is to determine the teacher's understanding of STEM and the barriers faced by teachers in implementing STEM learning. The study was a qualitative descriptive study. Qualitative data were obtained through a questionnaire given to 15 teachers who are members of the biology teachers learning community (MGMP Biologi) in Malang City. Data analysis was carried out qualitatively based on the results of the questionnaire given to the teacher. The results showed that teachers' understanding of STEM was still low. The main barrier faced in the implementation of STEM-based learning is teacher understanding about STEM still low and students' motivation to learn STEM is less. Suggestions for increasing the intensity and quality of STEM learning in schools are held training to improve teacher skills and collaboration between schools, government, and universities to improve the quality of STEM learning.
The analysis of implementation of multy source based learning media to improve the elementary students’ critical thinking skills in solving addition and subtraction problems
Authors: Sari Y R , Dafik  , Suparti
Published: June 2020

This study aims to investigate the analysis of implementation of multy source based learning media to improve the elementary students’ critical thinking skills in solving addition and subtraction problems. This is caused by the lesson plans cannot motivate students to improve critical thinking skills. The method used in this study is a mixed method which is a combination of quantitative and qualitative methods. The research subjects were the sixth grade students of elementary school consisting of 32 students of experimental class and 32 students of the control class. The instruments of this research are an interview, a questionnaire, observation, and documentation. Quantitative method is applied to analyze the difference of student achievement result among two classes, while the qualitative method is applied to analyze the students' higher order thinking skills. The results show that there are significant differences between the two classes that applied multi source based learning media and conventional learning. The statistical result indicates that the (2-tailed) significance of the independent sample t-test in the pre-test was 0.000 or α ≤ 0.05. It implies that the implementation of multy source based learning media affects the students' critical thinking skills in solving addition and subtraction problems.
The analysis of the implementation of scientific approach 5M to improve the elementary students’ critical thinking skills in solving a fraction sorting problem
Authors: Rofika  , Dafik  , Prastiti T D
Published: June 2020

This study aims to investigate the analysis of the implementation of scientific approach 5M to improve the elementary students’ critical thinking skills in solving a fraction sorting problem. Students' critical thinking skills are important, even though the current condition is not as well taught. The method used in this study is a mixed method. Quantitative methods were used to analyze the students’ learning outcomes, while qualitative methods were used to analyze students' critical thinking skills. Respondents in these study are two classes, divided into experimental class consisting of 26 students and the control class consisting of 24 students. The result showed that the implementation of the scientific approach 5M had better learning outcomes and critical thinking skills to solve a fraction sorting problem. The experimental students showed 74% interpretation skill, 72% analytic skill, 72% evaluation skill, and 71% inference skill while the control showed lower outcomes with 65% interpretation skill, 63% analytic skill, 62% evaluation skill and 60% inference skill. Furthermore, the independent sample t-test from the post-test showed that there is a significant difference between the control class and the experimental class with the sig (2-tailed) value was at 0,00 (p<0,05). It can be concluded that the implementation of scientific approach 5M can improve the elementary school students’ critical thinking skills in solving a fraction sorting problem.
Students’ creative thinking skill in the flipped classroom-blended learning of mathematics based on lesson study for learning community
Authors: Sya’roni A R , Inawati P A , Guswanto E , Susanto  , Hobri
Published: June 2020

Creative thinking skill is a thinking skill that generates new idea by combining any existing ideas to solve problems by using non-algorithmic, unusual, and unique methods. This research aimed to explore the development of mathematics learning instruments with the flipped classroom-blended learning based on lesson study for learning community and its implementation effect on students’ creative thinking skill. This research is multiphase mixed method research. This research was begun by research and development using 4D models to develop the learning instruments. Furthermore, a quantitative quasi-experimental research was conducted with non-equivalent pretest-posttest control group design. This research subject were 96 students on Class VIII at State Junior High School 2 Panji 2019/2020 academic year, consist of three treatment classes with two experiment classes and one control class. The research data were collected by questionnaire, observation, test, and interview. The research data were analysed statistically by Kruskal Wallis test. The results of this research show that (1) the mathematics learning instruments were valid, practically, and effective, and (2) the Kruskal Wallis test obtained significance value 0.017 (p<0,05), which indicated the implementation of the flipped classroom-blended learning model based on lesson study for learning community has significant effect on students' creative thinking skill.
Learning crude oil based on enviromental literacy
Authors: Farida I , Agung F R , Aisyah R , Nasrudin D
Published: June 2020

This research is carried out using design-based research methods to develop chemical teaching materials on crude oil based on environmental literacy. The process of forming and processing crude oil, fossil fuels, the quality of gasoline, the impact of burning fossil fuels and alternative fuels is presented in the form of a chemistry magazine oriented aspects of environmental literacy. The magazine presents text, images, graphics, tables, games, comics, poems and videos that are accessed via QR-code. This research uses Design Based Research that adopts the stages of ADDIE (Analysis, Design, Development, Implement, and Evaluations). The results of the validation test show that the magazine made can be declared valid and is suitable for use. It is hoped that teaching materials can be used to foster student awareness of maintaining and improving the environment.
The analysis of STEM-PjBL implementation and its effect on students’ metacognition skills in resolving social arithmetic problems
Authors: Wangguway Y , Kurniawati S , Maylisa I N , Al Jabbar Z L , Sulistiyono B
Published: June 2020

Students' metacognition skills are expected to improve with the implementation of STEM-based learning. This research aims to analyze the implementation of STEM-based learning and its effect on students' metacognition skills in solving social arithmetic problems. The method used in this study is a mixed method, which combines qualitative and quantitative methods. The research subjects were elementary school students consisting of 11 experimental class students and 11 control class students. Both classes were given different treatments. The instruments of this study were tests, observations, and interviews. Quantitative methods are used to analyze differences in student learning outcomes in both classes, while qualitative methods are applied to analyze students' metacognition skills. The results showed that there were significant differences between the two classes applying STEM-based learning and conventional learning models. Statistical results show that the significance of the 2-tailed t-test independent sample in the post-test is 0,000 or α ≤ 0.05. It shows that the implementation of STEM-based learning significantly influences students' metacognition skills in solving social arithmetic problems. Based on the results of the phase portrait analysis, it is known that students in the control class have relatively low metacognition skills and the experimental class has relatively higher metacognition skills which can be seen from the number of indicators mastered by each student.
Implementation of lesson study through guided inquiry learning model to improve students’ critical thinking
Authors: Isnawati L Z , Caswita  , Noer S H
Published: June 2020

This study aims to describe the application of guided inquiry models to improve students' critical thinking skills on the material of linear function class VIII A at SMP Negeri 1 Kota Agung. The type of research used in lesson study activities with guided inquiry consists of three stages of planning, doing, and seeing. Data collection techniques used in the form of interviews, tests, and documentation. The data analysis technique uses descriptive qualitative. The selection of material is based on the results of the midterm exams supported by the results of students' pretests. The subjects of this study were six students with low, medium and high skills. Students who have LS showed that the existence of critical thinking skills in the medium category with an N-Gain score of 0.4 to 0.45. Students who have MS have increased critical thinking skills in the medium category with an N-Gain score of 0.59 to 0.66. Students who have HS have increased critical thinking skills from the moderate to a high category with an N-Gain score of 0.68 to 0.76. The results of this study indicate that students' critical thinking skills in linear function material increased using Guided Inquiry through learning activities with low, medium or high skills.
Instructional materials for optical matter based on STEM-CP (Science, Technology, Engineering, Mathematics-Contextual Problem) to increase student critical thinking skills in high school
Authors: Sari I P , Sutarto  , Mudakir I , Supeno  , Budiarso A S
Published: June 2020

The optical matter is divided into three different points of view; there are physical optics, geometric optics, and optical tools. Three different points of view make optical matter difficult to integrate. Besides, the learning of optical matter in school mostly focuses on formulas, not the concept, so students find it difficult to apply optical matter in their daily lives. Also, critical thinking skills are needed to apply a concept to solve problems in daily life. One of the solutions to these problems is to apply optical teaching materials that discuss concepts and mathematics in a balanced, integrated, equipped by a contextual problem to increase student's critical thinking skills and make it easier to apply optical concepts in daily life. One of the suitable teaching materials is optical teaching materials based on STEM-CP (Science, Technology, Engineering, Mathematics-Contextual Problem). This study aims to measure student’s critical thinking skills after implied optical teaching materials based on STEM-CP. This research used Quasi-Pretest-Posttest Experiment without control class. Data analysis using the mixed-method, and were analyzed quantitatively. The sample used was 33 students of class XI science. The result obtained from pretest and posttest with open questions following indicators of critical thinking skills. The application of optical instrument teaching materials and function based on STEM-CP showed that student critical thinking skills increase from weak and unacceptable to strong and acceptable.
The development of environmental change textbook based on STEM-Cp to improve problem-solving skills in high school biology learning
Authors: Nuriyah D , Sutarto  , Prihatin J
Published: June 2020

21st century learning characteristics4C ( Communications, Collaboration, Critical Thingking an d Problem Solving, and Creativi y ), train ket e rampilan learn to innovate, skills in using the technology, media information, and skills of the workforce. The learning approach that matches the 4C character is the STEM approach. STEM is an integrated learning approach in all disciplines that trains students to innovate, and has a positive impact on learning outcomes. Although STEM-based learning has begun with its emergence the problem is in accordance with the concept, but the problem does not yet reflect the contextual problem ( Contextual Problem ). Learning about environmental change material even though it starts with a problem, but learning in schools only focuses on understanding the theory and literature without direct implementation in the lives of students. Based on that problem, the need for textbooks that discusses the concepts and technologies in a balanced, integrated, and include c ontextual problem in order to facilitate the students understand the concept of environmental changes in life. This study aims to develop a book teaching of environmental changes based STMCpE valid, effective, and practical. This research uses the 4D development method, namely Define, Design, Develop and Disseminate and mixed method which consists of quantitative and qualitative research. Qualitative research in the form of research development STMCpE-based textbooks. Quantitative research uses the pure post-test only control design experimental method.in the normality test the normal distribution of data obtained, and the homogeneity test obtained homogeneous data, so that parametric data analysis needs to be done using an independent sample t-test analysis. Based on the results of research are: (1) Development of a book teaching generated already included katego ri valid, effective and practical, (2) Application of learning scientifically based STMCpE significant effect on the ability of solving students' y ang shown on the significance value of 0.000 (p < 0.05)
The analysis of the implementation of the pictorial riddle method in improving the creative thinking skill of fourth grade students in solving of sound propagation problem
Authors: Agustin D H , Hobri  , Farisi M I
Published: June 2020

This study aims to produce a learning device pictorial riddle method that is feasible in improving the creative thinking skills of fourth grade students on sound propagation material. This is due to learning devices that are still not able to motivate students to improve creative thinking skills. This type of research uses mixed research which is a combination of quantitative and qualitative methods. The research respondents consisted of two classes, namely the control class of 22 students and the experimental class of 20 students. The instruments of this research are an interview, a questionnaire, observation, and documentation. Quantitative method is applied to analyze the difference of student achievement result among two classes, while the qualitative method is applied to analyze the students’ creative thinking skills. The results show that there are significant differences between the two classes that applied pictorial riddle method and conventional learning. The statistical result indicates that the (2-tailed) significance of the independent sample t-test in the pre-test was 0.000 or α ≤ 0.05. It implies that the implementation of pictorial riddle method affects the students' creative thinking skill in solving of sound propagation problem
The effectiveness of literacy stimulation model based on multisensory development of the results of DDST
Authors: Palupi J , Maryanti S A , Subiastutik E , Gumiarti  , Firmansyah F F
Published: June 2020

This research aims to study the effectiveness of literacy stimulation model based on multisensory development of the results of DDST in PAUD Aster 36, Jember. This type of research is Quasi-experimental design which is a form of experimental research that uses a control group but the control group unfunctionally to control external variables that can influence it. DDST assessment was carried out before and after treatment both in children who were given literacy stimulation or not. The research instrument used was the REEDA sign observation sheet with SOP tools. Respondent distribution data included gender, toddler age, toddler parent education, toddler parent age, toddler mother's work, toddler body weight, toddler head circumference and toddler upper arm circumference size. The result is the development of toddler overall assessment using DDST before treatment belongs to the normal category with different percentages. Development of toddler overall assessment using DDST After treatment was included in the normal category, but there was no statistical difference (p-value = 0.083) between the control and treatment groups.
The effectiveness of the combined of inquiry and experimental learning models on student cognitive learning outcomes about the properties of light
Authors: Fitriyah M , Suratno  , Prastiti T D , Dafik  , Hobri
Published: June 2020

Experimentation Method is one method that is widely used in learning Science because the main purpose of this method is to find the truth of the data/facts that can be observed or obtained. The inquiry learning model is a widely recommended method because it encourages students to solve problems independently. The research is research and development. The data is study include qualitative and quantitative data. The research instrument used was a validation sheet, a teacher's evaluation sheet, a student's evaluation sheet, an observation sheet for the implementation of learning, a test of learning outcomes, and a questionnaire for student learning independence. The implementation of the learning process on material changes in the form of objects observed by the observer, namely the class teacher using the observation sheet of the implementation of the learning process and student responses in using the inquiry learning model combined with experiment using a questionnaire sheet. Student learning outcomes or evaluations use the test method with the One Group Pre-test Post-test Design model to determine the extent to which student learning outcomes before and after being given a joint inquiry learning model and then use the average value formula (M), the calculated value (t-test), and table values. The results of the inquiry learning model combined with the experiment were shown by evaluating an average score of validity of 85.05% (very valid), an average of practicality of 94.4% (very practical), and effective in improving student learning outcomes. So, the inquiry learning model combined with science learning experiments is very feasible in terms of valid, practical, and effective.
ICT literacy with google suite for education (GSFE) in junior high school with different academic abilities
Authors: Insani K , Suratno  , Farisi I
Published: June 2020

The ICT Literacy skills of the Student are very important, but in fact, the ICT Literacy skills of the student have not appropriate with the expectation. In this research, researchers tried to use the Google Suite for Education in learning to improve ICT Literacy skills of the students with different academic abilities. This research was using quantitative methods and the type of the research was quasi experimental. The research respondents consisted of two classes, namely a control class as many as 32 students and the experimental class as many as 32 students. The results showed that, after using Google Suite for Education in learning, it was found that the percentage of knowledge value of ICT Literacy ability for the high control class category is 59% for Access, 69% for Manage, 41% for Integrate, 56% for Evaluate and 44% for Create. The medium categories is 31% for Access, 19% for Manage, 38% for Integrate, 25% for Evaluate and 56% for Create. The Low categories is 9% for Access, 13% for Manage, 22% for Integrate, 19% for Evaluate and 44% for Create. The value of ICT Literacy ability skills for high control class is 53% for Access, 69% for Manage, 66% for Integrate, 75% for Evaluate and 34% for Create. The medium categories is 44% for Access, 25% for Manage, 0% for Integrate, 0% for Evaluate and 50% for Create. The Low categories is 3% for Access, 6% for Manage, 34% for Integrate, 25% for Evaluate and 16% for Create. While the experimental class it was found that the percentage of knowledge value of ICT Literacy ability for the high control class category is 72% for Access, 78% for Manage, 53% for Integrate, 84% for Evaluate and 59% for Create. The medium categories is 25% for Access, 13% for Manage, 38% for Integrate, 9% for Evaluate and 34% for Create. The Low categories is 3% for Access, 9% for Manage, 9% for Integrate, 6% for Evaluate and 6% for Create. The value of ICT Literacy ability skills for high experimental class category is 63% for Access, 84% for Manage, 78% for Integrate, 78% for Evaluate and 41% for Create. The medium categories is 38 % for Access, 13% for Manage, 0% for Integrate, 0% for Evaluate and 47% for Create. The Low categories is 0% for Access, 3% for Manage, 22% for Integrate, 22% for Evaluate and 13% for Create. The score of the independent sample t-test from the ICT Literacy knowledge post-test shows that there is a significant difference between the control class and the experiment with the sig (2-tailed) value is 0.046 < 0.05 (p = < 0.05). Then the score of the independent sample t-test from the ICT Literacy skills post-test shows that there is a significant difference between the control class and the experiment with the sig (2-tailed) value is 0.045 < 0.05 (p = < 0.05). (RESULT) It can be concluded that the use of Google Suite For Education can improve ICT literacy knowledge dan skills of Junior High School students.
Implementation of lesson study with rigorous mathematical thinking based on student worksheet to enhance the students’ mathematical critical thinking
Authors: Resmi R A , Caswita
Published: June 2020

This article is an implementation of lesson study with an RMT-based student worksheet which aims to enhance students' mathematical critical thinking skills. The subjects of this study were 32 students of class VII A in MTsN 1 South Lampung, who represented: (1) different mathematical learning styles; and (2) different self-efficacy. Research begins with a plan, then begins to implement and reflect. The instruments of this study were students' worksheets based on RMT integer and fraction topics, Mathematical Learning Style (MLS) questionnaire, self-efficacy questionnaire, test instrument of critical thinking, and observation sheet. This study aims to improve students' critical thinking skills with the help of Student Worksheets based on RMT in terms of MLS and student self-efficacy. Based on the results of the study, students with Self-Expressive Learning (SL) and Mastery Learning (ML) learning styles experienced a high increase in critical thinking skills with N-gain scores of 0.73 and 0.71, respectively. While students with Understanding Learning (UL) and Interpersonal Learning (IL) learning styles have increased critical thinking skills in the medium category with N-Gain scores of 0.64 and 0.63. Students with high self-efficacy have increased high critical thinking skills. Students with intermediate self-efficacy experience an increase in mathematical critical thinking skills in the medium category.
Differentiation between TPACK level in junior and senior pre-service teacher to design science lesson
Authors: Terra I W A , Ridlo Z R , Indrawati  , Hidayah S
Published: June 2020

Technological development provides enormous opportunities for efficient and active learning. Advance in technology-based learning should be inline with the ability of teachers to teach science using technology. Preservice teachers should be equipped with an appropriate college curriculum. TPACK can be used to see the abilities of prospective science teachers. This study was examining different TPACK levels at junior and senior-level. This study involved a sample of students majoring in a bachelor's degree in science teacher program. The results of the questionnaire showed that junior-level students have higher TPACK than senior-level. Based on the results of a lesson plan analysis, junior-level students tend to use technology in the classroom. Students at the senior-level have been experienced in classroom teaching. However, classroom management and time management skills of maybe affects the TPACK level in junior and senior-level students.