scholarly journals Scientific experiment focused at pigment degradation by polyvinyl chloride combustion in Science education

2019 ◽  
Vol 9 (3) ◽  
pp. 458
Author(s):  
Zita Jenisová ◽  
Jana Braniša
Keyword(s):  
Environmental Education ◽  
Cross Section ◽  
Chemistry Education ◽  
Combustion Products ◽  
Teaching Profession ◽  
Chemistry Teaching ◽  
Scientific Experiment ◽  
Science Classes ◽  
The Impact

The Environmental education navigates students towards environmentally friendly life style and securing a quality of life. The implementation of cross-section topics, including the Environmental education, into science classes, is possible through a variety of techniques. One of the least used methods is a real school experiment. The following paper presents the experiment, by which we simulate the combustion of PVC and observe the impact of combustion products on plants via UV-Vis spectrophotometry optical method. This method is suitable for qualification and analysis of vegetable pigments, i.e. chlorophylls, carotenoids, and anthocyanins. The experiment is integrated into the Techniques and Didactics of School Chemistry Experiments as a part of master degree course, which prepares students for the Chemistry teaching profession. The introduced experiment enables pedagogues to integrate the environmental education into teaching process and develop mathematical and science literacy of students in the Chemistry education.

scholarly journals Analysis of environmental impacts of combustion products of some pyrotechnic compositions

2019 ◽  
pp. 123-132
Author(s):  
Bożena Kukfisz ◽  
Jakub Rakus ◽  
Robert Piec
Keyword(s):  
Life Cycle ◽  
Combustion Products ◽  
Rocket Engines ◽  
Product Categories ◽  
Gas Products ◽  
Potential Impact ◽  
Pyrotechnic Mixtures ◽  
Quality Of Products ◽  
The Impact

The study examined mixtures obtained from ready pyrotechnic articles available on the market in Poland. Samples were taken from various products with different performance characteristics, i.e. pyrotechnic batteries, firecrackers, volcanoes, as well as smoke candles, rockets (including rocket engines), and cold fires. These are the product categories most frequently used by users. The research allowed to determine gaseous combustion products and showed their life cycle in the environment. A comparative analysis of selected pyrotechnic mixtures was carried out in terms of their impact on the climate change of gas products. Using the ICT-Thermodynamic Code program, gaseous combustion products were estimated and the life cycle was analysed using the SimaPro program. Determining the impact on the environment (upon the basis of Ecoindicator 99) allowed to know the scale of the problem and set the direction of development of the pyrotechnic industry, so that importers could compete not only with the price and quality of products offered, but also tried to reduce the potential impact on the environment.

The Impact of Class Size on the Quality of Teaching and Learning — A Review

1973 ◽  
Vol 17 (3) ◽  
pp. 239-250 ◽  
Author(s):  
Leslie R. Eastcott
Keyword(s):  
Class Size ◽  
Teaching And Learning ◽  
Teaching Profession ◽  
Complex Issue ◽  
General Attitude ◽  
The Real ◽  
Quality Of Teaching ◽  
The Impact

This paper reviews some of the salient research into the complex issue of the impact of class size on the quality of teaching and learning. It describes the general attitude of the teaching profession towards class size and discusses some of the claims made regarding the influence of the variable on teaching and learning. Some evidence is presented to illustrate the nature of the profession's stand on the issue. It is acknowledged that the real impact of class size is much less clear than is implied by the normal assertions regarding its importance, and some of the important literature is examined to illustrate this point. From the discussion several suggestions emerge for desirable procedures in the further investigation of this area.

scholarly journals Politics of policy: Assessing the implementation, impact, and evolution of the Performance Assessment for California Teachers (PACT) and edTPA

2016 ◽  
Vol 24 ◽  
pp. 9 ◽  
Author(s):  
Emilie Mitescu Reagan ◽  
Thomas Schram ◽  
Kathryn McCurdy ◽  
Te-Hsin Chang ◽  
Carla M. Evans
Keyword(s):  
Performance Assessment ◽  
State Policies ◽  
Teaching Profession ◽  
Performance Assessments ◽  
Policy Implications ◽  
Statewide Assessment ◽  
Growing Body ◽  
The Impact ◽  
Do So

Summative performance assessments in teacher education, such as the Performance Assessment for California Teachers (PACT) and the edTPA, have been heralded through polices intended to enhance the quality of the teaching profession and raise its stature among other professions. However, the development and implementation of the PACT, and subsequently the edTPA, have not been without controversy and debate. The purpose of this article is to assess the implementation, impact, and evolution of the PACT and edTPA. To do so, we review the growing body of literature on the impact and implementation of the PACT and critically analyze the state policies surrounding the edTPA. We raise questions about the practical and policy implications of the PACT’s evolution, as a statewide assessment, to the edTPA, a nationally available assessment.

scholarly journals Chemistry teaching as environmental education instrument in a High School

2021 ◽  
pp. 47987-47992
Keyword(s):  
High School ◽  
Environmental Education ◽  
School Environment ◽  
Chemistry Education ◽  
Concept Maps ◽  
Environmental Awareness ◽  
Second Grade ◽  
Chemistry Teaching ◽  
Textual Production ◽  
The City

Chemistry Education as an instrument of environmental awareness aims to work on the importance of caring for the environment, seeking a better understanding and development of critical citizen thinking about the environmental problems that are getting worse every day. In this sense, it is necessary to approach environmental education at school, aiming to raise students' awareness. The study of environmental education in schools makes future generations develop more conscious, critical and sustainable thinking in relation to the paths taken that involve the environment and society in general. Thus, this work aims to present the importance of environmental education in the student's daily life and in the school environment, seeking to transmit how it can be an instrument for environmental awareness. In order to achieve the objective presented, it was necessary to develop some activities carried out in the classroom and outside of it, with a second-grade class from the State Elementary and High School located in the Nova Floresta city, Brazil. These activities were divided into five moments, which aimed to analyze knowledge about the generator theme: construction of concept maps in the classroom; preparation of pamphlets, addressing the correct way to dispose of garbage; field class at the city dump and requested a textual production activity; production of parodies, cartoons, comics and cordel; workshop for the production of objects with recyclable materials. According to the results obtained, it was observed the interest and commitment of the students to develop the activities and dedication on the theme, considering that, there was enthusiasm on the part of the students to carry out a certain deepening about the damages to the environment, as well as, the reuse of materials that alleviate the excess of accumulated garbage.

scholarly journals The gradation impact of glass material on combined with copper

2018 ◽  
Vol 49 ◽  
pp. 00129
Author(s):  
Izabela Wilkos ◽  
Marcin Jędrzak ◽  
Marek Szymczak
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Sheet Metal ◽  
Cross Section ◽  
Significant Influence ◽  
Microscopic Analysis ◽  
Circular Saw ◽  
Baking Process ◽  
The Impact

The results of observation on the impact of the glass baking process on the quality of connection with glass drenched in copper. The aim of the work is to present the results obtained in the process of fragmentation of the glass and the assessment of the particle size distribution on the durability of the connection of glass and copper. The test used two types of glass divided by different fineness. Copper was used in the form of galvanized sheet metal and pipes and cables to diversify cross-section openness. Received samples were cut with a circular saw in accordance with vertical and horizontal axis. Microscopic analysis, allowing to evaluate porosity of obtained composite, was carried out. On the basis of the analysis of the results, it was specified that fineness of glass and the temperature of the baking process has a significant influence on the combination of glass with copper.

scholarly journals Experiences from iPad use at Olari School and High School and in chemistry education

2013 ◽  
Vol 1 (4) ◽  
pp. 425-434
Author(s):  
Kirsi- Maria Vakkilainen ◽  
Päivi Forsström
Keyword(s):  
High School ◽  
Information Search ◽  
Chemistry Education ◽  
Pilot Project ◽  
Project Work ◽  
Laboratory Work ◽  
Chemistry Teaching ◽  
Laboratory Equipment ◽  
Learning Platform ◽  
The Impact

In autumn 2011, a pilot project was launched at Olari School and High School the aim of which was to implement and utilize tablets in high school education and evaluation. Apple iPads were chosen as the used tablets. At first, few teachers and the principal were in charge of the pilot project and eventually the project expanded and in spring 2013 there were 90 tablets for student use and every teacher had one’s personal tablet. The impact of tablets on learning and pedagogical solutions has been significant. The positive aspects of iPad use include their portability and use potential during for example excursions and school trips. They serve as good tools in project work due to the simplicity of information search and data saving. Also, photos of teaching and practical laboratory work, for example, can be saved using iPad. Occasionally, the limitations to wireless network and other technical difficulties have discouraged the users. For teachers, the utilization of iPads has meant that plenty of extra time has been consumed on education and development of new practices. The cost of applications limits their accessibility on shared tablets. For now, there are so few Finnish-language applets for the teaching of different subjects that their benefits are not necessarily significant. However, the biggest challenge is the lack of time. In chemistry teaching, iPads have been used in several ways. Different programs and applications have been used in projects, essays, and reporting on laboratory work. Electronic Fronter learning platform can be used with iPads, also microcomputer-based laboratory equipment by Pasco can be connected to iPad while, for example, measuring pH.

scholarly journals Multiple perspectives on students’ scientific communication & reasoning in chemistry education [VISIONS 2011: Teaching]

2012 ◽  
Vol 6 (1) ◽  
Author(s):  
Maik Walpuski ◽  
Oliver Tepner ◽  
Elke Sumfleth ◽  
Sabrina Dollny ◽  
Julia Hostenbach ◽  
...  
Keyword(s):  
Decision Making ◽  
Content Knowledge ◽  
Scientific Reasoning ◽  
Chemistry Education ◽  
Multiple Perspectives ◽  
Pedagogical Content ◽  
Test Items ◽  
Classroom Activities ◽  
Science Classes

Both students and teachers need different competences for scientific reasoning. Apart from the required content knowledge and the ability of using it adequately, both groups need elaborated knowledge of strategies for decision-making and argumentation. These competences concerning decision-making are highly dependent on how frequently students are given the chance to argue in science classes. This article pools the results of three different research projects in chemistry education which focus on these three aspects: Students’ competences, the classroom situation with regard to communication and reasoning and teachers’ competences. Students’ skills needed for discussing chemistry content and for decision-making in scientific contexts are analyzed first. Following this, the opportunities for improving these skills during science lessons are researched and related to results from a study of teachers’ pedagogical content knowledge (PCK) in this domain. The analysis of students’ and teachers’ communication skills is conducted in two different ways which are paper-pencil tests and video analysis. Paper-pencil tests are used to assess students’ performance in reasoning. The test items deal with chemistry-specific situations, including opportunities for decision-making, which are typical of socio-scientific issues (study 1). The study shows that students’ decision-making skills are poor when the topics deal with scientific contexts, but that students perform better when dealing with everyday-life contexts. One reason might be the lack of reasoning in chemistry lessons, as shown by a video study conducted in chemistry classes. Students’ and teachers’ in-class behavior and communication patterns are analyzed with regard to students’ and teachers’ contributions (study 2). The amount and the quality of students’ and teachers’ statements as well as the interactions, especially teachers’ reactions to students’ statements are investigated. Teachers’ way of negotiating and guiding classroom discussions should depend on their PCK in this specific field. Due to a lack of studies on correlations between teachers’ PCK and classroom activities, the third study focuses on the development of adequate tests on PCK. Tests on content knowledge (CK) are developed in addition to prove the expected correlations between PCK and CK (Baumert & Kunter, 2006).

Self-Compassion and Quality of Life in Adults Who Stutter

2020 ◽  
Vol 29 (4) ◽  
pp. 2097-2108
Author(s):  
Robyn L. Croft ◽  
Courtney T. Byrd
Keyword(s):  
Quality Of Life ◽  
Social Connectedness ◽  
The Self ◽  
Future Research ◽  
Self Compassion ◽  
Adults Who Stutter ◽  
And Gender ◽  
Relationship Of ◽  
The Impact

Purpose The purpose of this study was to identify levels of self-compassion in adults who do and do not stutter and to determine whether self-compassion predicts the impact of stuttering on quality of life in adults who stutter. Method Participants included 140 adults who do and do not stutter matched for age and gender. All participants completed the Self-Compassion Scale. Adults who stutter also completed the Overall Assessment of the Speaker's Experience of Stuttering. Data were analyzed for self-compassion differences between and within adults who do and do not stutter and to predict self-compassion on quality of life in adults who stutter. Results Adults who do and do not stutter exhibited no significant differences in total self-compassion, regardless of participant gender. A simple linear regression of the total self-compassion score and total Overall Assessment of the Speaker's Experience of Stuttering score showed a significant, negative linear relationship of self-compassion predicting the impact of stuttering on quality of life. Conclusions Data suggest that higher levels of self-kindness, mindfulness, and social connectedness (i.e., self-compassion) are related to reduced negative reactions to stuttering, an increased participation in daily communication situations, and an improved overall quality of life. Future research should replicate current findings and identify moderators of the self-compassion–quality of life relationship.

Surgery for Lung Cancer and the Consequences for the Swallow

2016 ◽  
Vol 1 (13) ◽  
pp. 162-168
Author(s):  
Pippa Hales ◽  
Corinne Mossey-Gaston
Keyword(s):  
Lung Cancer ◽  
Treatment Options ◽  
Vocal Cord Palsy ◽  
Subsequent Treatment ◽  
Physiological Reserve ◽  
Palliative Phase ◽  
And Function ◽  
The Impact ◽  
Swallow Function

Lung cancer is one of the most commonly diagnosed cancers across Northern America and Europe. Treatment options offered are dependent on the type of cancer, the location of the tumor, the staging, and the overall health of the person. When surgery for lung cancer is offered, difficulty swallowing is a potential complication that can have several influencing factors. Surgical interaction with the recurrent laryngeal nerve (RLN) can lead to unilateral vocal cord palsy, altering swallow function and safety. Understanding whether the RLN has been preserved, damaged, or sacrificed is integral to understanding the effect on the swallow and the subsequent treatment options available. There is also the risk of post-surgical reduction of physiological reserve, which can reduce the strength and function of the swallow in addition to any surgery specific complications. As lung cancer has a limited prognosis, the clinician must also factor in the palliative phase, as this can further increase the burden of an already compromised swallow. By understanding the surgery and the implications this may have for the swallow, there is the potential to reduce the impact of post-surgical complications and so improve quality of life (QOL) for people with lung cancer.

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