scholarly journals Remediation of CO2 in Boudouard’s Reaction as an Example of Reversible Chemical Reaction

2020 ◽  
Vol 25 (1-2) ◽  
pp. 101-111
Author(s):  
Elżbieta Szostak ◽  
Ewa Odrowąż ◽  
Natalia Górska
Keyword(s):  
Global Climate ◽  
Lessons Learned ◽  
School Level ◽  
Cognitive Difficulties ◽  
Reversible Chemical Reaction ◽  
Secondary School Level ◽  
Scientific Experiments ◽  
Combustion Processes ◽  
Solubility Equilibrium ◽  
Chemical Experiment

Abstract One of the fundamental elements of a scientist's work is the ability to lead observations of the phenomena that surround us and based on them making conclusions. These observations are conducted within the so-called scientific experiments. Lessons learned based on the results obtained in experiments allow researchers to better understand the essence of the phenomena occurring in the world around us. Drawing conclusions is not always easy. In order to achieve this skill, we must possess a well-established knowledge in the field of the phenomenon that interests us. The most striking example of how important skills are observation and drawing proper conclusions is the phenomenon of global climate warming. The main parameter influencing temperatures registered on Earth is the concentration of greenhouse gases in the atmosphere, and especially carbon dioxide created from combustion processes. A significant role in studies of the reduction of CO2 emissions plays chemists. To be sure that conducted by them experiments are optimally designed, it is necessary to ensure them with proper education already at the secondary school level. The main aim of this article was to conduct the study in order to explain chemical issues that create the greatest cognitive difficulties among students. The second aim of the article was to propose a chemical experiment to students that would allow them to find out more about the phenomena governing in the area of problematic issues. The proposed experiment is based on the concept of solubility equilibrium. Results of preliminary tests that have been carried out after applying this experiment on a small group of students, indicated their better understanding of the studied subject.

Implementing Infrastructure-Related Education Technology Solutions at the Government Primary and Secondary School Level

2013 ◽  
pp. 343-363 ◽  
Author(s):  
Camille Dickson-Deane ◽  
W. Andrew Deane
Keyword(s):  
Developing Countries ◽  
Instructional Design ◽  
Change Management ◽  
Education System ◽  
Lessons Learned ◽  
School Level ◽  
Funding Agencies ◽  
Secondary School Level ◽  
The Government

Advances in technology and the increased competitiveness of the world’s economy have changed the landscape for developing countries. One of the primary steps many countries have taken to be competitive is to infuse technology into the education system, using funds provided by international funding agencies. This case study discusses the SITUP project, which uses technology to enhance a portion of the education system in a developing country. These enhancements include infusion of technology into the delivery systems, introducing skill-based efficiencies for educators and general infrastructure-related access. The case highlights the importance of team buy-in, clearly identifying change management and general reporting processes and, most importantly, including all stakeholders through each phase of the project. Vendor-related solutions, lack of instructional design methodologies, creating processes, and identifying appropriate risks are some of the challenges discussed. Lessons learned and recommendations for similar projects that occur within difficult economic and political climates are presented.

Analisis Kemampuan Penalaran Matematis Mahasiswa Calon Guru Matematika Sebagai Kajian Evaluasi

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Hanifah Nurus Sopiany
Keyword(s):  
High School Students ◽  
Secondary School ◽  
Mathematical Reasoning ◽  
Mathematics Learning ◽  
Good Reason ◽  
School Level ◽  
Real Analysis ◽  
Reasoning Ability ◽  
School Students ◽  
Secondary School Level

Penalaran matematis menggunakan pola pikir logis dalam menganalisa suatu masalah yang nanti pada akhirnya akan ditandai dengan aktivitas menyimpulkan atas masalah tersebut. Seseorang yang memiliki penalaran yang baik, tentunya akan berhati-hati dalam bertindak dan memutuskan sesuatu. Materi-materi pada kalkulus merupakan materi yang ada pada tingkat sekolah menengah yang nantinya menjadi lahan mengajar mahasiswa calon guru matematika S-1. Kemampuan penalaran yang dikaji mempengaruhi pembelajaran mahasiswa kedepannya karena berlaku pada matakuliah lanjut, contohnya pada kemampuan pembuktian akan selalu digunakan pada matakuliah persamaan diferensial, struktur aljabar, analisis  vektor, analisis real, dll. Sedangkan sebagai calon guru yang nantinya mengajar pada tingkat sekolah menengah, maka kemampuan penalaran ini menjadi salah satu capaian pembelajaran matematika bagi siswa sekolah menengah, maka oleh karena itu guru yang mengajarnya haruslah memiliki kemampuan penalaran yang baik. Analisis kesalahan sangat penting untuk melakukan evaluasi dan refleksi pada struktur soal maupun pada perlakuan dalam pembelajaran dalam upaya memperbaiki kemampuan penalarannya.   Mathematical reasoning uses a logical mindset in analyzing a problem that will eventually be marked by concluding activity on the problem. Someone who has good reason, will certainly be careful in acting and deciding something. The material content on the calculus is the material that exists at the secondary school level which will become the field of teaching the prospective master of math teacher bachelor. The reasoning ability studied influences student learning in the future as it applies to advanced courses, for example in the ability of proof will always be used in the course of differential equations, algebraic structure, vector analysis, real analysis, etc. While as a teacher candidate who will teach at the secondary school level, then this reasoning ability becomes one of the achievements of mathematics learning for high school students, therefore teachers who teach it must have good reasoning ability. Error analysis is very important to evaluate and reflect on the problem structure as well as on the treatment in learning in order to improve the reasoning ability.

The utility of non-formal education in addressing the school dropout phenomenon : a case study of Asifundeni Secondary School in Makonde District Zimbabwe

2020 ◽  
Vol 1 (3) ◽  
pp. 41-69
Author(s):  
Francis Muchenje ◽  
◽  
Pedzisai Goronga
Keyword(s):  
Secondary School ◽  
Formal Education ◽  
Sampling Technique ◽  
School Dropout ◽  
School Level ◽  
Research Approach ◽  
Community Members ◽  
Group Discussions ◽  
Secondary School Level

The study sought to explore students' views on the utility of non-formal education in addressing the school dropout phenomenon at secondary school level. Qualitative research approach was adopted and a case study design was utilised. The population consisted of all the students in the non-formal programme at the school from which a sample of 11 students (2 male and 9 female) was selected through purposive stratified sampling technique. Data were gathered through structured in-depth interviews and focus group discussions. Non-formal education was seen to address the school dropout phenomenon by providing school drop outs with an opportunity to continue their education and hence becomes a form of empowerment. A number of challenges such as lack of adequate tuition in some subjects, lack of conducive learning environment as well as negative perception of non-formal education held by pupils in the formal stream and community members were identified. The study recommends that the Ministry of Primary and Secondary Education should review the staffing situation in schools to ensure the availability of teachers in the various subjects in the non-formal stream. Schools should make an effort to provide appropriate learning facilities for students in the nonformal stream. Furthermore, schools should conscientise their communities on the importance of non-formal education.

THE LAPBOOK AS A DIDACTIC TOOL TO IMPLEMENT INTEGRATED TRAINING IN NATURAL SCIENCE AND TECHNOLOGY AND ENTREPRENEURSHIP AT PRIMARY SCHOOL LEVEL

2018 ◽  
Vol 28 (3) ◽  
pp. 959-963 ◽  
Author(s):  
Yordanka Peycheva ◽  
Snezhana Lazarova
Keyword(s):  
Natural Science ◽  
Lessons Learned ◽  
Point Of View ◽  
School Level ◽  
Integrative Approach ◽  
Educational Goals ◽  
Knowledge And Skills ◽  
Global Issues ◽  
Highly Active ◽  
The World

The formation of comprehensive and in-depth notions of objects and phenomena in the world can be achieved when the mastery of knowledge and skills is carried out in a system realized in the context of integration of different scientific directions. One of the main issues in modern education is related to the contradiction - on one hand between the need to form the skills necessary for the orientation and adaptation of the personality in the dynamics of the globalizing world and on the other - the education which is largely based on unilateral acquiring of knowledge and skills within the different subject areas. This influences the development of a worldview and the formation of an adequate attitude towards the problems under consideration and the world as a whole. The knowledge and skills acquired today are often “locked” in the respective direction. The cross-curricular unity in the curriculum is of a recommended nature, but even if it is realized, it does not fully meet the need for a comprehensive and multifaceted consideration of global issues, as a result of which the student not only understands, reflects, but also applies the lessons learned in the process of creating a product - ideal or material. Combining the intellectual nature of the cognitive process with the practice activity are conditions in which the students are highly active and achieve better learning outcomes. Therefore, it is expedient for the different directions to correspond more closely to each other and to carry out effective cross-curricular integration. The concept of applying an integrative approach in the current paper is based on the idea of creating pedagogical conditions for reconciling the goals and expected outcomes of technology and entrepreneurship and natural sciences studied at the initial stage of the primary education. Integration can take place on two levels - knowledge and skills. We believe that the lapbook as an innovative didactic tool contains the necessary potential for effective realization of the educational goals in both directions in terms of achieving the expected results. In the course of its elaboration, new information is acquired in the field of engineering and technology, specific skills underlying the curricula of technology and entrepreneurship programs are developed. At the same time, a number of subjects from the learning content, which are considered from the natural science point of view, are enriched and perceived in a technological way, after which they find place in an attractive book - a lapbook, made by the students themselves. Its utilitarian value is multiplied by the personal contribution to its creation - not only as an object but also as content. The main topics that are of interest to the students are exploring and preserving nature, jobs, modern technical achievements, holidays and customs. As a result of the adequate integration of competences, tailored to curricula, a number of skills are formed, such as: skills for searching on their own, systematization and presentation of information, and application of the lessons learned in a new situation.

scholarly journals Simple and efficient modifications of well known techniques for reliable growth of high-quality crystals of small bioorganic molecules

2014 ◽  
Vol 47 (4) ◽  
pp. 1435-1442 ◽  
Author(s):  
Denis A. Rychkov ◽  
Sergey G. Arkhipov ◽  
Elena V. Boldyreva
Keyword(s):  
Amino Acids ◽  
Secondary School ◽  
Organic Molecules ◽  
Poor Quality ◽  
Chemical Degradation ◽  
School Level ◽  
Chemistry Curriculum ◽  
High Quality ◽  
Small Organic Molecules ◽  
Secondary School Level

A number of modifications to traditional techniques are suggested in order to overcome problems that frequently arise when growing crystals from solution. These improvements, and their combination, help to avoid problems such as poor nucleation, the spontaneous precipitation of many poor-quality small powder-like crystals, crystals adhering to the crystallization vessel or to each other, and chemical degradation of the solution. The proposed techniques can be used to crystallize desirable metastable polymorphs reliably. None of the suggested methods demands the usage of any special or expensive equipment, or specific skills, and they can be implemented in the chemistry curriculum even at secondary school level. Examples are given for the crystallization of small organic molecules such as carboxylic acids, amino acids, pharmaceuticals etc., but the same techniques are applicable to other classes of compound.

Homework Emotion Management at the Secondary School Level: Antecedents and Homework Completion

2011 ◽  
Vol 113 (3) ◽  
pp. 529-560 ◽  
Author(s):  
Jianzhong Xu
Keyword(s):  
Emotion Regulation ◽  
Secondary School ◽  
Emotion Management ◽  
School Level ◽  
Individual Student ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Class Level ◽  
Secondary School Level ◽  
Homework Completion

Background/Context For many children, doing homework becomes an emotionally charged event and one of the most disappointing aspects of school life. It is surprising to note, however, that homework emotion management is noticeably absent from much contemporary homework literature. Purpose The primary propose of the present study was to propose and test empirical models of variables posited to predict homework emotion management at the secondary school level, with the models informed by (a) research and theory on emotion regulation and (b) findings from homework research that alluded to a number of factors that may influence homework emotion management. Another purpose of the present study was to examine whether homework emotion management is related to homework completion, one of the major outcome variables in the homework process. Research Design The study reported here used cross-sectional survey data. The participants were 1,895 students from 111 classes in the southeastern United States, including 1,046 eighth graders from 63 classes and 849 11th graders from 48 classes. Results Results from the multilevel analyses revealed that most of the variance in homework emotion management occurred at the student level, with grade level appearing as the only significant predictor at the class level. At the student level, the variation in homework emotion management was positively associated with teacher feedback, peer-oriented reasons for doing homework, arranging the environment, managing time, and monitoring motivation. Girls reported statistically significant higher scores in managing homework emotion than did boys. Follow-up analyses further revealed that homework emotion management was positively associated with homework completion. Conclusion As most of the variance in homework emotion management occurred at the student level rather than at the class level, homework emotion management was largely a function of individual student characteristics and experiences. The present study further suggests that monitoring motivation and managing time play a predominant role in homework emotion management (compared with other variables included in the present study). Consequently, there is a critical need to conceptualize these variables in the process of emotion regulation in general, and in homework emotion management in particular. In addition, there is a critical need for secondary schools to strategically engage students in the homework process to better manage their emotion while doing homework.

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