Multidimensional ability is an important factor in students’ success in solving the problem of learning chemistry difficulties (stoichiometry). This study aims to find out how much students can explore abilities such as understanding concepts and scientific processes, the use of information and communication technology (ICT) effectively and productively, implementation of efficient technical processes and understanding mathematics. A Qualitative-descriptive method used as the research design. Data were collected through several techniques such as interviews, observations, and questionnaires. One chemistry teacher and 117 students were the participants of this study. The results showed that high school students lack multidimensionL abilities. The implication is students have not been able to master the stoichiometric problems related to problems in real life. Therefore, it is recommended that teachers build STEM literacy in the teaching and learning process.
{"title":"Science, technology, engineering and mathematics (STEM) literacy on stoichiometry: A multidimensional ability","authors":"R. Farida, S. Ariani, N. Y. Indriyanti","doi":"10.1063/1.5139758","DOIUrl":"https://doi.org/10.1063/1.5139758","url":null,"abstract":"Multidimensional ability is an important factor in students’ success in solving the problem of learning chemistry difficulties (stoichiometry). This study aims to find out how much students can explore abilities such as understanding concepts and scientific processes, the use of information and communication technology (ICT) effectively and productively, implementation of efficient technical processes and understanding mathematics. A Qualitative-descriptive method used as the research design. Data were collected through several techniques such as interviews, observations, and questionnaires. One chemistry teacher and 117 students were the participants of this study. The results showed that high school students lack multidimensionL abilities. The implication is students have not been able to master the stoichiometric problems related to problems in real life. Therefore, it is recommended that teachers build STEM literacy in the teaching and learning process.","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127711675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The purpose of this study was to analyze the students’ critical thinking ability through the implementation of Ethnoscience Instruction (EI) using Critical thinking rubrics based on the International Critical Thinking Essay Test (ICTET). This study employed a quasi-experimental design consisting of two classes: experimental and control. The population in this study were XII grade students in several Senior High Schools in Surakarta which students are categorized to have high, intermediate and low critical thinking skills in the academic year of 2018/2019. Respondents were selected by the cluster random sampling technique. Data were analyzed by using descriptive method to describe the level of the students’ critical thinking ability. Findings revealed the difference between experimental class and control class with the following details: purpose (15.83%), questions (13.63%), information (8.63%), point of view (13.98%), assumptions (5.08%), concepts (6.79%), conclusions (8.90%), and implication (10.62%).The purpose of this study was to analyze the students’ critical thinking ability through the implementation of Ethnoscience Instruction (EI) using Critical thinking rubrics based on the International Critical Thinking Essay Test (ICTET). This study employed a quasi-experimental design consisting of two classes: experimental and control. The population in this study were XII grade students in several Senior High Schools in Surakarta which students are categorized to have high, intermediate and low critical thinking skills in the academic year of 2018/2019. Respondents were selected by the cluster random sampling technique. Data were analyzed by using descriptive method to describe the level of the students’ critical thinking ability. Findings revealed the difference between experimental class and control class with the following details: purpose (15.83%), questions (13.63%), information (8.63%), point of view (13.98%), assumptions (5.08%), concepts (6.79%), conclusions (8.90%), and implication (10.62%).
{"title":"The analysis of students’ critical thinking skill through ethnoscience instruction integrated on the topic of magnetic field","authors":"Y. Gunawan, Sarwanto, F. Nurosyid","doi":"10.1063/1.5139765","DOIUrl":"https://doi.org/10.1063/1.5139765","url":null,"abstract":"The purpose of this study was to analyze the students’ critical thinking ability through the implementation of Ethnoscience Instruction (EI) using Critical thinking rubrics based on the International Critical Thinking Essay Test (ICTET). This study employed a quasi-experimental design consisting of two classes: experimental and control. The population in this study were XII grade students in several Senior High Schools in Surakarta which students are categorized to have high, intermediate and low critical thinking skills in the academic year of 2018/2019. Respondents were selected by the cluster random sampling technique. Data were analyzed by using descriptive method to describe the level of the students’ critical thinking ability. Findings revealed the difference between experimental class and control class with the following details: purpose (15.83%), questions (13.63%), information (8.63%), point of view (13.98%), assumptions (5.08%), concepts (6.79%), conclusions (8.90%), and implication (10.62%).The purpose of this study was to analyze the students’ critical thinking ability through the implementation of Ethnoscience Instruction (EI) using Critical thinking rubrics based on the International Critical Thinking Essay Test (ICTET). This study employed a quasi-experimental design consisting of two classes: experimental and control. The population in this study were XII grade students in several Senior High Schools in Surakarta which students are categorized to have high, intermediate and low critical thinking skills in the academic year of 2018/2019. Respondents were selected by the cluster random sampling technique. Data were analyzed by using descriptive method to describe the level of the students’ critical thinking ability. Findings revealed the difference between experimental class and control class with the following details: purpose (15.83%), questions (13.63%), information (8.63%), point of view (13.98%), assumptions (5.08%), concepts (6.79%), conclusions (8.90%), and implication (10.62%).","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130228804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Taher, N. Huda, N. Palapa, R. Mohadi, A. Lesbani
The preparation of polyoxometalate-intercalated MgAl layered double hydroxides (LDH) has been conducted and employed as an adsorbent for direct violet dye removal from aqueous solution. The MgAl LDH was firstly prepared by coprecipitation method under basic condition then followed by an ion-exchange process with K3[α-PW12O40].nH2O solution. The obtained materials were characterized by XRD and TG-DTA. Related to the X-ray diffraction pattern, the synthesized MgAl LDH exhibited typical diffraction peak at 2theta of 11.56° correspond to the basal distance of 7.72 A. While after intercalated by [α-PW12O40]3-, the typical diffraction peak of MgAl LDH shifted to the lower diffraction angle of 8.88° that corresponds to the basal spacing of 9.95 A. The utilization of the prepared materials as an adsorbent for direct violet dye removal from aqueous solution showed that the intercalated LDH exhibited better adsorption capacity than the pristine MgAl LDH.
{"title":"Preparation of MgAl LDH intercalated by α-PW12O403- for adsorptive removal of direct violet dye from aqueous solution","authors":"T. Taher, N. Huda, N. Palapa, R. Mohadi, A. Lesbani","doi":"10.1063/1.5139857","DOIUrl":"https://doi.org/10.1063/1.5139857","url":null,"abstract":"The preparation of polyoxometalate-intercalated MgAl layered double hydroxides (LDH) has been conducted and employed as an adsorbent for direct violet dye removal from aqueous solution. The MgAl LDH was firstly prepared by coprecipitation method under basic condition then followed by an ion-exchange process with K3[α-PW12O40].nH2O solution. The obtained materials were characterized by XRD and TG-DTA. Related to the X-ray diffraction pattern, the synthesized MgAl LDH exhibited typical diffraction peak at 2theta of 11.56° correspond to the basal distance of 7.72 A. While after intercalated by [α-PW12O40]3-, the typical diffraction peak of MgAl LDH shifted to the lower diffraction angle of 8.88° that corresponds to the basal spacing of 9.95 A. The utilization of the prepared materials as an adsorbent for direct violet dye removal from aqueous solution showed that the intercalated LDH exhibited better adsorption capacity than the pristine MgAl LDH.","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130878295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Digital technology in the 21st century is considered as a powerful tool to support innovation in learning systems. Blended learning is a model that adopts digital technology in the learning process, and if supported by technology-based teaching materials, it will be very efficient and effective. This study aims to investigate the needs of blended learning in high school chemistry to enhance students’ metacognitive skills and attitudes towards chemistry. Particularly, the purposes of this study are described as follows: (1) to investigate students’ attitudes towards chemistry on High School; (2) to analyse students’ digital knowledge and experience; (3) to analyse the needs of students and teachers on High School Chemistry for the blended learning module with Thermochemistry-based Learning Management System (LMS); (4) to analyse the quality of instruments by Rasch Model. Ninety eleventh grade students and nine teachers from three high schools in Surakarta, Indonesia participated in this study. The research instrument was prepared based on the research indicators. Data collection technique used a survey and an interview. The data were analyzed through qualitative and quantitative methods. The qualitative analysis focused on the teacher’s questionnaire and interview, while quantitative analysis was the students’ questionnaire using the Rasch model. The study obtained the following conclusions: (1) Indonesian high school students’ attitudes towards chemistry were still relatively low (2) High school knowledge and experience of digital technology in learning was high, (3) The need for LMS-based blended learning module to improve students’ attitude towards chemistry and metacognition skills was very high; (4) By variable map, the research instrument test met the Rasch model requirements so that it was feasible to use.Digital technology in the 21st century is considered as a powerful tool to support innovation in learning systems. Blended learning is a model that adopts digital technology in the learning process, and if supported by technology-based teaching materials, it will be very efficient and effective. This study aims to investigate the needs of blended learning in high school chemistry to enhance students’ metacognitive skills and attitudes towards chemistry. Particularly, the purposes of this study are described as follows: (1) to investigate students’ attitudes towards chemistry on High School; (2) to analyse students’ digital knowledge and experience; (3) to analyse the needs of students and teachers on High School Chemistry for the blended learning module with Thermochemistry-based Learning Management System (LMS); (4) to analyse the quality of instruments by Rasch Model. Ninety eleventh grade students and nine teachers from three high schools in Surakarta, Indonesia participated in this study. The research...
{"title":"Blended learning in high school chemistry to enhance students’ metacognitive skills and attitudes towards chemistry: A need analysis","authors":"Kartyka Nababan, B. Hastuti, N. Y. Indriyanti","doi":"10.1063/1.5139800","DOIUrl":"https://doi.org/10.1063/1.5139800","url":null,"abstract":"Digital technology in the 21st century is considered as a powerful tool to support innovation in learning systems. Blended learning is a model that adopts digital technology in the learning process, and if supported by technology-based teaching materials, it will be very efficient and effective. This study aims to investigate the needs of blended learning in high school chemistry to enhance students’ metacognitive skills and attitudes towards chemistry. Particularly, the purposes of this study are described as follows: (1) to investigate students’ attitudes towards chemistry on High School; (2) to analyse students’ digital knowledge and experience; (3) to analyse the needs of students and teachers on High School Chemistry for the blended learning module with Thermochemistry-based Learning Management System (LMS); (4) to analyse the quality of instruments by Rasch Model. Ninety eleventh grade students and nine teachers from three high schools in Surakarta, Indonesia participated in this study. The research instrument was prepared based on the research indicators. Data collection technique used a survey and an interview. The data were analyzed through qualitative and quantitative methods. The qualitative analysis focused on the teacher’s questionnaire and interview, while quantitative analysis was the students’ questionnaire using the Rasch model. The study obtained the following conclusions: (1) Indonesian high school students’ attitudes towards chemistry were still relatively low (2) High school knowledge and experience of digital technology in learning was high, (3) The need for LMS-based blended learning module to improve students’ attitude towards chemistry and metacognition skills was very high; (4) By variable map, the research instrument test met the Rasch model requirements so that it was feasible to use.Digital technology in the 21st century is considered as a powerful tool to support innovation in learning systems. Blended learning is a model that adopts digital technology in the learning process, and if supported by technology-based teaching materials, it will be very efficient and effective. This study aims to investigate the needs of blended learning in high school chemistry to enhance students’ metacognitive skills and attitudes towards chemistry. Particularly, the purposes of this study are described as follows: (1) to investigate students’ attitudes towards chemistry on High School; (2) to analyse students’ digital knowledge and experience; (3) to analyse the needs of students and teachers on High School Chemistry for the blended learning module with Thermochemistry-based Learning Management System (LMS); (4) to analyse the quality of instruments by Rasch Model. Ninety eleventh grade students and nine teachers from three high schools in Surakarta, Indonesia participated in this study. The research...","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134592367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Economic growth is an important thing in a country’s economic activities because it can be one indicator of the success of a country’s economic activities. A country’s economic growth is calculated based on the Gross Domestic Product (GDP) at constant prices. Some variables that are thought to influence GDP include energy consumption, trade openness, financial development, and urban population. The ASEAN Economic Community involves trade activities that are portrayed by exports and imports, thus signaling a link between ASEAN countries. The model that can be used to analyze the relationships that occur between countries is the spatial econometrics approach. The data that used in the spatial model in the form of cross-section data. On the other hand, the number of ASEAN countries is only ten, so the panel data is used in this study. Data was collected for the period 2008-2014, while the method used in this study was Quasi-Maximum Likelihood Estimation applied to spatial panel data. The results obtained show that the best model formed with QMLE test statistics with sandwich-HC covariance has the smallest CIC value of 0.0581 obtained by three independent variables that influence GDP per capita, namely energy consumption, financial development, and urban population. Based on three significant variables it is proven that there is a correlation between locations indicated by significant spatial autoregressive coefficients in the fixed-effects panel model of 0,5177. Then the value of the elasticity coefficient for the variable energy consumption, financial development, and urban population are 0,1029; 0.1433; and 0,2693.Economic growth is an important thing in a country’s economic activities because it can be one indicator of the success of a country’s economic activities. A country’s economic growth is calculated based on the Gross Domestic Product (GDP) at constant prices. Some variables that are thought to influence GDP include energy consumption, trade openness, financial development, and urban population. The ASEAN Economic Community involves trade activities that are portrayed by exports and imports, thus signaling a link between ASEAN countries. The model that can be used to analyze the relationships that occur between countries is the spatial econometrics approach. The data that used in the spatial model in the form of cross-section data. On the other hand, the number of ASEAN countries is only ten, so the panel data is used in this study. Data was collected for the period 2008-2014, while the method used in this study was Quasi-Maximum Likelihood Estimation applied to spatial panel data. The results obtained sho...
{"title":"Quasi-maximum likelihood estimation method on spatial autoregressive fixed effect for modeling the economic growth of ASEAN countries","authors":"Indira Ihnu Brilliant, Setiawan, A. Suharsono","doi":"10.1063/1.5139745","DOIUrl":"https://doi.org/10.1063/1.5139745","url":null,"abstract":"Economic growth is an important thing in a country’s economic activities because it can be one indicator of the success of a country’s economic activities. A country’s economic growth is calculated based on the Gross Domestic Product (GDP) at constant prices. Some variables that are thought to influence GDP include energy consumption, trade openness, financial development, and urban population. The ASEAN Economic Community involves trade activities that are portrayed by exports and imports, thus signaling a link between ASEAN countries. The model that can be used to analyze the relationships that occur between countries is the spatial econometrics approach. The data that used in the spatial model in the form of cross-section data. On the other hand, the number of ASEAN countries is only ten, so the panel data is used in this study. Data was collected for the period 2008-2014, while the method used in this study was Quasi-Maximum Likelihood Estimation applied to spatial panel data. The results obtained show that the best model formed with QMLE test statistics with sandwich-HC covariance has the smallest CIC value of 0.0581 obtained by three independent variables that influence GDP per capita, namely energy consumption, financial development, and urban population. Based on three significant variables it is proven that there is a correlation between locations indicated by significant spatial autoregressive coefficients in the fixed-effects panel model of 0,5177. Then the value of the elasticity coefficient for the variable energy consumption, financial development, and urban population are 0,1029; 0.1433; and 0,2693.Economic growth is an important thing in a country’s economic activities because it can be one indicator of the success of a country’s economic activities. A country’s economic growth is calculated based on the Gross Domestic Product (GDP) at constant prices. Some variables that are thought to influence GDP include energy consumption, trade openness, financial development, and urban population. The ASEAN Economic Community involves trade activities that are portrayed by exports and imports, thus signaling a link between ASEAN countries. The model that can be used to analyze the relationships that occur between countries is the spatial econometrics approach. The data that used in the spatial model in the form of cross-section data. On the other hand, the number of ASEAN countries is only ten, so the panel data is used in this study. Data was collected for the period 2008-2014, while the method used in this study was Quasi-Maximum Likelihood Estimation applied to spatial panel data. The results obtained sho...","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124071236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ahmad Yani Ranius, Zulfiati Syahrial, Moch. Sokardjo, Syakirah
Virtual learning is intended to overcome the problem of the separation of space and time between students and instructors through computer media. Students can obtain learning materials that have been designed in available learning packages. Practicum is a form of scientific evidence of what has been learned. Algorithm and Programming subjects study an algorithm by applying it in the form of Pascal programming. Technology users are used for hybrid learning, through constructive learning through creative, collaborative and reflective virtual compositions. This research applied a learning method approach and verified the usefulness of the initial prototype that was built to support it. The researchers proposed to combine conventional practical lectures and distributed user interfaces to increase the skills of students to follow constructive learning processes. Then, the need to manage challenges that are carried out to collaborate with a distributed approach is also discussed.Virtual learning is intended to overcome the problem of the separation of space and time between students and instructors through computer media. Students can obtain learning materials that have been designed in available learning packages. Practicum is a form of scientific evidence of what has been learned. Algorithm and Programming subjects study an algorithm by applying it in the form of Pascal programming. Technology users are used for hybrid learning, through constructive learning through creative, collaborative and reflective virtual compositions. This research applied a learning method approach and verified the usefulness of the initial prototype that was built to support it. The researchers proposed to combine conventional practical lectures and distributed user interfaces to increase the skills of students to follow constructive learning processes. Then, the need to manage challenges that are carried out to collaborate with a distributed approach is also discussed.
{"title":"Virtual learning : Practicum of algorithms and programming using Pascal program","authors":"Ahmad Yani Ranius, Zulfiati Syahrial, Moch. Sokardjo, Syakirah","doi":"10.1063/1.5139833","DOIUrl":"https://doi.org/10.1063/1.5139833","url":null,"abstract":"Virtual learning is intended to overcome the problem of the separation of space and time between students and instructors through computer media. Students can obtain learning materials that have been designed in available learning packages. Practicum is a form of scientific evidence of what has been learned. Algorithm and Programming subjects study an algorithm by applying it in the form of Pascal programming. Technology users are used for hybrid learning, through constructive learning through creative, collaborative and reflective virtual compositions. This research applied a learning method approach and verified the usefulness of the initial prototype that was built to support it. The researchers proposed to combine conventional practical lectures and distributed user interfaces to increase the skills of students to follow constructive learning processes. Then, the need to manage challenges that are carried out to collaborate with a distributed approach is also discussed.Virtual learning is intended to overcome the problem of the separation of space and time between students and instructors through computer media. Students can obtain learning materials that have been designed in available learning packages. Practicum is a form of scientific evidence of what has been learned. Algorithm and Programming subjects study an algorithm by applying it in the form of Pascal programming. Technology users are used for hybrid learning, through constructive learning through creative, collaborative and reflective virtual compositions. This research applied a learning method approach and verified the usefulness of the initial prototype that was built to support it. The researchers proposed to combine conventional practical lectures and distributed user interfaces to increase the skills of students to follow constructive learning processes. Then, the need to manage challenges that are carried out to collaborate with a distributed approach is also discussed.","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116601505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Utami, S. Saputro, Ashadi, M. Masykuri, S. Widoretno
Critical thinking skills are 21st century skills needed by students to be able to compete in the era of globalization. The components of critical thinking according to Facione are interpretation, analysis, explanation, evaluation, conclusion, and self-regulation. This study was aimed to identify critical thinking skills in aspects of interpretation using performance assessment rubric. Indicators of critical thinking skills aspects of interpretation consisted of five indicators: interpretation based on experience, interpretation based on data, interpretation based on events, interpretation based on procedures and interpretation based on judgment. The RASCH was used in data analysis. The samples were 120 students selected from one of senior high school in Surakarta, Central Java, Indonesia. The performance assessment instrument was analyzed with the RASCH model. The performance assessment to assess interpretation skills were analyzed with the RASCH model showing the instruments was good. The results showed the students still have difficulties in interpretation based on procedure and judgment. This illustrates the importance of empowering students’ critical thinking skills in the interpretation component.
{"title":"Performance assessment to assess students’ interpretation in chemistry learning","authors":"B. Utami, S. Saputro, Ashadi, M. Masykuri, S. Widoretno","doi":"10.1063/1.5139867","DOIUrl":"https://doi.org/10.1063/1.5139867","url":null,"abstract":"Critical thinking skills are 21st century skills needed by students to be able to compete in the era of globalization. The components of critical thinking according to Facione are interpretation, analysis, explanation, evaluation, conclusion, and self-regulation. This study was aimed to identify critical thinking skills in aspects of interpretation using performance assessment rubric. Indicators of critical thinking skills aspects of interpretation consisted of five indicators: interpretation based on experience, interpretation based on data, interpretation based on events, interpretation based on procedures and interpretation based on judgment. The RASCH was used in data analysis. The samples were 120 students selected from one of senior high school in Surakarta, Central Java, Indonesia. The performance assessment instrument was analyzed with the RASCH model. The performance assessment to assess interpretation skills were analyzed with the RASCH model showing the instruments was good. The results showed the students still have difficulties in interpretation based on procedure and judgment. This illustrates the importance of empowering students’ critical thinking skills in the interpretation component.","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131630994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dwilaksana Abdullah Rasyid, Irhamah, P. P. Oktaviana, Nur Iriawan
Telecommunication has been being a need for a wide community that cannot be avoided. The development of communication technology users in Indonesia causes the movement of the development of information technology from a secondary or tertiary need to be a primary need. The increasing of the needs of communication in the community makes these stocks being the largest capital stocks. So that it makes community interest to invest in the telecommunication factory. The closing price of this stocks somehow changing form the high prices switch to the low prices or vice versa. The closing price fluctuation could cause the behavior of stock prices to emerge to a multi-modal pattern. Frequently it would hard to perform a time series model because of its multi-modal characteristics in its serial data. This paper demonstrates the success of the work of the Mixture Autoregressive (MAR) modeling to overcome the multi-modality of some of the serial telecommunication stock price data and compare its performance with the Autoregressive Integrated Moving Average (ARIMA) modeling based on the smaller Mean Square Error (MSE), Akaike Information Criteria (AIC), and Bayesian Information Criteria (BIC).Telecommunication has been being a need for a wide community that cannot be avoided. The development of communication technology users in Indonesia causes the movement of the development of information technology from a secondary or tertiary need to be a primary need. The increasing of the needs of communication in the community makes these stocks being the largest capital stocks. So that it makes community interest to invest in the telecommunication factory. The closing price of this stocks somehow changing form the high prices switch to the low prices or vice versa. The closing price fluctuation could cause the behavior of stock prices to emerge to a multi-modal pattern. Frequently it would hard to perform a time series model because of its multi-modal characteristics in its serial data. This paper demonstrates the success of the work of the Mixture Autoregressive (MAR) modeling to overcome the multi-modality of some of the serial telecommunication stock price data and compare its performance with the A...
{"title":"Modeling stock prices using mixture autoregressive model","authors":"Dwilaksana Abdullah Rasyid, Irhamah, P. P. Oktaviana, Nur Iriawan","doi":"10.1063/1.5139835","DOIUrl":"https://doi.org/10.1063/1.5139835","url":null,"abstract":"Telecommunication has been being a need for a wide community that cannot be avoided. The development of communication technology users in Indonesia causes the movement of the development of information technology from a secondary or tertiary need to be a primary need. The increasing of the needs of communication in the community makes these stocks being the largest capital stocks. So that it makes community interest to invest in the telecommunication factory. The closing price of this stocks somehow changing form the high prices switch to the low prices or vice versa. The closing price fluctuation could cause the behavior of stock prices to emerge to a multi-modal pattern. Frequently it would hard to perform a time series model because of its multi-modal characteristics in its serial data. This paper demonstrates the success of the work of the Mixture Autoregressive (MAR) modeling to overcome the multi-modality of some of the serial telecommunication stock price data and compare its performance with the Autoregressive Integrated Moving Average (ARIMA) modeling based on the smaller Mean Square Error (MSE), Akaike Information Criteria (AIC), and Bayesian Information Criteria (BIC).Telecommunication has been being a need for a wide community that cannot be avoided. The development of communication technology users in Indonesia causes the movement of the development of information technology from a secondary or tertiary need to be a primary need. The increasing of the needs of communication in the community makes these stocks being the largest capital stocks. So that it makes community interest to invest in the telecommunication factory. The closing price of this stocks somehow changing form the high prices switch to the low prices or vice versa. The closing price fluctuation could cause the behavior of stock prices to emerge to a multi-modal pattern. Frequently it would hard to perform a time series model because of its multi-modal characteristics in its serial data. This paper demonstrates the success of the work of the Mixture Autoregressive (MAR) modeling to overcome the multi-modality of some of the serial telecommunication stock price data and compare its performance with the A...","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129063219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Concepts of plant identification and classification were important basic knowledge to be mastered by biology students. The research was aimed to find out what concepts and methods of learning plant taxonomy, and find out the objects and methods in plant taxonomy research. Seventeen articles published from 2005-2019 were selected as the review materials. Nine articles were about learning the plant taxonomy, and eight articles were about research on plant taxonomy. The articles were obtained from Journal of Biological Education and Science Direct. The results showed the common concepts learned about plant identification and classification. The prominent plant groups used in the learning were: the Bryophytes, Pteridophytes, Gymnosperms, and Angiosperm with the example of the native species and focal species. The learning methods and approaches were varied, including: using real plant specimens, dichotomous key method, word association exercise based on mnemonics approach, or pictorial card games for identification native plants. Others use an electronic multi-access key, iOS app on the iPod for plant identification guide, interactive multimedia dichotomous key for plant identification, labeled drawing and descriptive writing of native plant identification. Various aspects used as the object of the research on plants taxonomy, one of them was the leaves. Various methods used in the research on plant taxonomy, such as: FRT, LDC Linear, kNN, SIFT, Color moments, SFTA, ANNs, Deep learning techniques, hierarchical approach - NFC, and AIT.
{"title":"Plant taxonomy learning and research: A systematics review","authors":"W. Kusumawardani, Muzzazinah, M. Ramli","doi":"10.1063/1.5139783","DOIUrl":"https://doi.org/10.1063/1.5139783","url":null,"abstract":"Concepts of plant identification and classification were important basic knowledge to be mastered by biology students. The research was aimed to find out what concepts and methods of learning plant taxonomy, and find out the objects and methods in plant taxonomy research. Seventeen articles published from 2005-2019 were selected as the review materials. Nine articles were about learning the plant taxonomy, and eight articles were about research on plant taxonomy. The articles were obtained from Journal of Biological Education and Science Direct. The results showed the common concepts learned about plant identification and classification. The prominent plant groups used in the learning were: the Bryophytes, Pteridophytes, Gymnosperms, and Angiosperm with the example of the native species and focal species. The learning methods and approaches were varied, including: using real plant specimens, dichotomous key method, word association exercise based on mnemonics approach, or pictorial card games for identification native plants. Others use an electronic multi-access key, iOS app on the iPod for plant identification guide, interactive multimedia dichotomous key for plant identification, labeled drawing and descriptive writing of native plant identification. Various aspects used as the object of the research on plants taxonomy, one of them was the leaves. Various methods used in the research on plant taxonomy, such as: FRT, LDC Linear, kNN, SIFT, Color moments, SFTA, ANNs, Deep learning techniques, hierarchical approach - NFC, and AIT.","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116653343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There have been significant interests in investigating the phenomenon of shadow education in the past few decades. Globally, it is known as shadow education, in some countries they prefer to use private supplementary tutoring, meanwhile for Brunei Darussalam, it is commonly called private tuition or simply tuition. Private tuition in Brunei is not a new phenomenon and the number of students who participate in private tuition has increased. Typically, students who perform below average are more prevalent in choosing private tuition in order to keep up with the school curriculum. Interestingly, students with above average performance are also taking part in private tuition, either to maintain their achievements or to be more advance than their peers. The overarching aim of this study is to gain in-depth understanding into the reasons why some students choose to get tuition, specifically for the Mathematics subject. Responses from the semi-structured interview questions that were posed to ten selected students ranging from Year 6 to Year 13 were categorized according to themes, which were tuition experience, why the need for tuition, location and provider, pedagogy and learning, and future expectations. Some of findings revealed that parental motivation and performing well in tests and examinations were among the common reasons for taking tuition classes. As far as is concern, there is only few research evidences gathered that shows students’ involvement in shadow education for Mathematics in Brunei. Through this study, teachers, parents and policy makers may find it beneficial to understand the needs of the students and may use it as a guide in improving a student’s academic achievements. Building on the results of this study, the relationship between private tuition and a student’s achievements can be further explored in future researches.There have been significant interests in investigating the phenomenon of shadow education in the past few decades. Globally, it is known as shadow education, in some countries they prefer to use private supplementary tutoring, meanwhile for Brunei Darussalam, it is commonly called private tuition or simply tuition. Private tuition in Brunei is not a new phenomenon and the number of students who participate in private tuition has increased. Typically, students who perform below average are more prevalent in choosing private tuition in order to keep up with the school curriculum. Interestingly, students with above average performance are also taking part in private tuition, either to maintain their achievements or to be more advance than their peers. The overarching aim of this study is to gain in-depth understanding into the reasons why some students choose to get tuition, specifically for the Mathematics subject. Responses from the semi-structured interview questions that were posed to ten selected studen...
{"title":"Why the need for private tuition in mathematics? Investigating shadow education in Brunei Darussalam","authors":"Ai Len Gan, M. Shahrill","doi":"10.1063/1.5139763","DOIUrl":"https://doi.org/10.1063/1.5139763","url":null,"abstract":"There have been significant interests in investigating the phenomenon of shadow education in the past few decades. Globally, it is known as shadow education, in some countries they prefer to use private supplementary tutoring, meanwhile for Brunei Darussalam, it is commonly called private tuition or simply tuition. Private tuition in Brunei is not a new phenomenon and the number of students who participate in private tuition has increased. Typically, students who perform below average are more prevalent in choosing private tuition in order to keep up with the school curriculum. Interestingly, students with above average performance are also taking part in private tuition, either to maintain their achievements or to be more advance than their peers. The overarching aim of this study is to gain in-depth understanding into the reasons why some students choose to get tuition, specifically for the Mathematics subject. Responses from the semi-structured interview questions that were posed to ten selected students ranging from Year 6 to Year 13 were categorized according to themes, which were tuition experience, why the need for tuition, location and provider, pedagogy and learning, and future expectations. Some of findings revealed that parental motivation and performing well in tests and examinations were among the common reasons for taking tuition classes. As far as is concern, there is only few research evidences gathered that shows students’ involvement in shadow education for Mathematics in Brunei. Through this study, teachers, parents and policy makers may find it beneficial to understand the needs of the students and may use it as a guide in improving a student’s academic achievements. Building on the results of this study, the relationship between private tuition and a student’s achievements can be further explored in future researches.There have been significant interests in investigating the phenomenon of shadow education in the past few decades. Globally, it is known as shadow education, in some countries they prefer to use private supplementary tutoring, meanwhile for Brunei Darussalam, it is commonly called private tuition or simply tuition. Private tuition in Brunei is not a new phenomenon and the number of students who participate in private tuition has increased. Typically, students who perform below average are more prevalent in choosing private tuition in order to keep up with the school curriculum. Interestingly, students with above average performance are also taking part in private tuition, either to maintain their achievements or to be more advance than their peers. The overarching aim of this study is to gain in-depth understanding into the reasons why some students choose to get tuition, specifically for the Mathematics subject. Responses from the semi-structured interview questions that were posed to ten selected studen...","PeriodicalId":246056,"journal":{"name":"THE 2ND INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT, AND EDUCATION","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129649085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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