scholarly journals Prospective chemistry teachers’ perceptions of their profession: The state of the art in Slovenia and Finland

2017 ◽  
Vol 82 (10) ◽  
pp. 1193-1210
Author(s):  
Vesna Ferk-Savec ◽  
Bernarda Urankar ◽  
Maija Aksela ◽  
Iztok Devetak
Keyword(s):  
Prospective Teachers ◽  
State Of The Art ◽  
Personal Characteristics ◽  
Teaching Approaches ◽  
Chemistry Teachers ◽  
Teachers Perceptions ◽  
Chemistry Learning ◽  
Adequate Understanding ◽  
Chemical Concepts

The main purpose of this paper is to present Slovenian and Finnish prospective chemistry teachers? perceptions of their future profession, especially with regard to their understanding of the role of the triple nature of chemical concepts (macro, submicro and symbolic) and their representations in chemistry learning. A total of 19 prospective teachers (10 Slovenian, 9 Finnish) at master?s level in chemical education participated in the research. The prospective teachers? opinions were gathered using an electronic questionnaire comprising six open-ended questions. The study revealed many parallels between Slovenian and Finnish prospective chemistry teachers? perceptions of their future profession and their understanding of the role of the triple nature of chemical concepts, especially particle representations, in chemistry learning. The majority of the prospective teachers from both countries believe that personal characteristics are the most important attribute of a successful chemistry teacher. Thus, they highly value teachers? enthusiasm for teaching and the use of contemporary teaching approaches in chemistry. The prospective teachers displayed an adequate understanding of the role of the triple nature of chemical concepts (i.e., particle representations) in the planning and implementation of a specific chemistry lesson.

Does a course on the history and philosophy of chemistry have any effect on prospective chemistry teachers’ perceptions? The case of chemistry and the chemist

2017 ◽  
Vol 18 (4) ◽  
pp. 601-629 ◽  
Author(s):  
G. Sendur ◽  
M. Polat ◽  
C. Kazancı
Keyword(s):  
Prospective Teachers ◽  
Retention Test ◽  
State University ◽  
Structured Interviews ◽  
Philosophy Of Chemistry ◽  
Chemistry Teachers ◽  
Teachers Perceptions ◽  
Post Test ◽  
History Of ◽  
The Impact

The creative comparisons prospective chemistry teachers make about “chemistry” and the “chemist” may reflect how they perceive these concepts. In this sense, it seems important to determine which creative comparisons prospective teachers make with respect to these and how these can change after the history of chemistry is treated in the classroom. This study seeks to investigate the impact of the basic History and Philosophy of Chemistry course on prospective chemistry teachers’ perceptions towards chemistry and the chemist. The study was conducted during the 2012–2013 academic year at a state university in Turkey with 38 prospective chemistry teachers. A creative comparisons questionnaire and semi-structured interviews were used as data collection instruments in the study. This questionnaire was administered to the prospective teachers in the form of a pre-test, post-test, and retention test. Results of the analysis showed that the prospective teachers produced creative comparisons related to chemistry in the pre-test that mostly relied on their own experiences and observations, but that in the post-test and retention test, their comparisons mostly contained references to the role of chemistry in daily life, its development, and its facilitating aspects. Similarly, it was observed that in the pre-test, the prospective teachers made creative comparisons regarding the chemist that related mostly to the laboratory, but that the post-test and retention test rather contained the aspects of chemists as researchers, meticulous persons, facilitators and managers. Also, 18 prospective teachers were engaged in interviews to understand their prior knowledge about chemistry and the chemist, as well as the reasons for the changes in their creative comparisons. The results of the interviews indicated that a large majority of the prospective teachers were able to fully reflect on their inadequacy about their previous knowledge about “chemistry” and “chemist,” and it was seen that they could explain the reason they changed their creative comparisons as an outcome of the History and Philosophy of Chemistry course. In the light of these results, it can be said that the History and Philosophy of Chemistry course may help prospective chemistry teachers in their perceptions about both chemistry and the chemist and may add depth to their knowledge.

scholarly journals Examining the Content Validity of Android-Based Augmented Reality Media for Chemical Bonding using Rasch Model

2021 ◽  
Vol 7 (SpecialIssue) ◽  
pp. 320-325
Author(s):  
Sri Yamtinah ◽  
Sri Retno Dwi Ariani ◽  
Martha Andriyanti ◽  
Sulistyo Saputro ◽  
Endang Susilowati ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Rasch Model ◽  
Learning Needs ◽  
Chemistry Teachers ◽  
Media Design ◽  
3D Objects ◽  
Chemistry Learning ◽  
Chemical Concepts ◽  
The Media ◽  
The Rasch Model

21st-century learning presents chemistry teachers with new challenges in teaching abstract chemistry concepts with various technologies that continue to develop. One of the media that can visualize abstract chemical concepts is Augmented Reality (AR). AR media developed in chemistry learning needs to be valid so that it can be used properly. Therefore, this study aims to examine the validity of the Android-based AR media developed. Four education practitioners carried out the validation as experts, and 13 students participated as respondents. The instrument used is a questionnaire with a Likert scale. The data obtained were analyzed quantitatively with the Rasch model using the facet software. The results of the analysis show that the Exact Agreements are 41.10%, and the Expected Agreements are 42.20%. The most challenging aspect to achieve is media design, while profit is the most easily agreed-upon aspect. Based on this assessment, in the development of augmented reality media, it is necessary to pay attention to display aspects and 3D objects suitable for viewing a material so that it is easier for users to understand the material.

scholarly journals PROSPECTIVE TEACHERS’ CREATIVITY FOSTERING BEHAVIORS, PERCEPTIONS ON THEIR TECHNOLOGY SKILLS AND SUCCESS IN PROJECT BASED MATERIAL DEVELOPMENT

2015 ◽  
Vol 63 (1) ◽  
pp. 84-92
Author(s):  
Özge Özyalçin Oskay
Keyword(s):  
Educational Technology ◽  
Regression Analysis ◽  
Prospective Teachers ◽  
Chemistry Education ◽  
Descriptive Statistics ◽  
Technology Skills ◽  
Chemistry Teachers ◽  
Teachers Perceptions ◽  
Material Development ◽  
Development Course

In this study it was determined how pre-service chemistry teachers’ creativity fostering behaviours and their perceptions of their technology skills predict their success in Project Based Educational Technology and Material Development course. A sample of the study consists of 45 pre-service teachers attending Department of Chemistry Education at Hacettepe University. After the applications which took 10 weeks, pre-service teachers presented their materials and evaluated their peers and themselves. In order to determine pre-service teachers’ creativity fostering behaviours, “Creativity Fostering Teacher Index Scale” which was developed by Soh (2000) and adapted into Turkish by Dikici (2013) was used. In order to determine pre-service chemistry teachers’ perceptions on their technology skills, “Application Based Educational Technology and Material Development Skills Scale” consisting 46 items and developed by Akgül (2010) was used. Descriptive Statistics of “Creativity Fostering Teacher Index Scale” and “Application Based Educational Technology and Material Development Skills Scale” show that prospective teachers have behaviours supporting creativity and their perceptions about their technology skills is over the average. And multiple regression analysis shows that pre-service teachers’ creativity fostering behaviours and their perceptions on their technology skills together predict their success in project based material development course. Key words: creativity fostering behaviours, perceptions on technology skills, pre-service chemistry teachers, project based educational technology and material development.

scholarly journals A Competence of Teacher in Making e-LKPD Using Flip Book Maker with Emphasis on Macro, Submicro, and Simbolic Level Representation of Chemistry

2020 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Miftahul Khair ◽  
Minda Azhar ◽  
Alizar Ulianus
Keyword(s):  
General Chemistry ◽  
Industrial Revolution ◽  
Student Work ◽  
Chemistry Teachers ◽  
Knowledge And Skills ◽  
Teacher Competency ◽  
Chemistry Learning ◽  
Chemical Concepts ◽  
Service Activity ◽  
Partnership Program

The aim of the Community Partnership Program (PKM) service activity is to increase teacher competency in making electronic electronic Student Work Sheets (e-LPKD) using flip book makers with an emphasis on three levels of chemical representation. The method used is lectures, demonstrations and workshops. The lecture and demonstration methods are used to deliver the topics i.e ICT and internet terminology, industrial revolution 4 and three levels of chemical representation. The practice includes quick tricks of editing images from general chemistry books and transferring them to LKPD. Workshops are to make e-LKPD using a flip book maker accompanied by videos of learning chemistry, animation of chemical concepts. This activity can improve the knowledge and skills of chemistry teachers using standard general chemistry e-books, videos of chemistry learning and chemical animation from internet. This community service activities can improve the knowledge and skills of chemistry teachers in integrating a variety of learning resources that can be used to create ICT-based e-LKPD by emphasizing on three levels of chemical representation.

Everybody Follows the Crowd?

2017 ◽  
Vol 29 (2) ◽  
pp. 1-12 ◽  
Author(s):  
Magdalena Obermaier ◽  
Thomas Koch ◽  
Christian Baden
Keyword(s):  
Experimental Design ◽  
News Coverage ◽  
Personal Characteristics ◽  
Election Campaigns ◽  
Bandwagon Effect ◽  
Political News ◽  
Election Results ◽  
Opinion Polls ◽  
Electoral Preferences

Abstract. Opinion polls are a well-established part of political news coverage, especially during election campaigns. At the same time, there has been controversial debate over the possible influences of such polls on voters’ electoral choices. The most prominent influence discussed is the bandwagon effect: It states that voters tend to support the expected winner of an upcoming election, and use polls to determine who the likely winner will be. This study investigated the mechanisms underlying the effect. In addition, we inquired into the role of past electoral performances of a candidate and analyzed how these (as well as polls) are used as heuristic cues for the assessment of a candidate’s personal characteristics. Using an experimental design, we found that both polls and past election results influence participants’ expectations regarding which candidate will succeed. Moreover, higher competence was attributed to a candidate, if recipients believe that the majority of voters favor that candidate. Through this attribution of competence, both information about prior elections and current polls shaped voters’ electoral preferences.

Zeit und gutes Leben

2020 ◽  
Vol 74 (4) ◽  
pp. 493-513
Author(s):  
Holmer Steinfath
Keyword(s):  
Internal Structure ◽  
Good Life ◽  
External Factor ◽  
Life Time ◽  
The Good Life ◽  
Adequate Understanding ◽  
Gutes Leben

Time is a neglected subject in recent, especially analytically minded reflections on the good life. The article highlights the fundamental role of time and temporality for an adequate understanding of the good life. Time functions both as an external factor with which we have to reckon in our practical deliberations and as an internal structure of living our lives. It is argued that striving for a good life also means striving for being in harmony with the time of one's life. The exploration of this idea allows to link analytical with phenomenological approaches to time and good life.

Smolensk Proper Names in A.T. Tvardovsky’s Poems

2020 ◽  
pp. 54-62
Author(s):  
Inna A. Koroleva ◽  
Keyword(s):  
Proper Names ◽  
Personal Characteristics ◽  
Entire Body ◽  
Literary Works ◽  
Thematic Content ◽  
Home Town ◽  
Birthday Anniversary ◽  
Long Poems ◽  
First Time

This article is dedicated to the 110th birthday anniversary of a great Russian poet, native of Smolensk, one of the founders of the Smolensk Poetic School Aleksandr Tvardovsky (1910–1971). It examines how Smolensk motifs and Tvardovsky’s love for his home town are reflected in his works at the onomastic level. Smolensk-onyms reflected in long poems are analysed here, the focus being on anthroponyms and toponyms naming the characters and indicating the locations associated with Smolensk region. A close connection between the choice of proper names and Tvardovsky’s biography is established. An attempt is made to demonstrate how, using onomastic units introduced by the author into the storyline of his artistic text, the general principles of autobiography and chronotopy are realized, which have been noted earlier in critiques of Tvardovsky’s literary works. The onomastic component of the poems is analysed thoroughly and comprehensively, which helps us to decode the conceptual chain writer – name – text – reader and identify the author’s attitude to the characters and the ideological and thematic content of the works, as well as some of the author’s personal characteristics, tastes and passions. At the onomastic level, the thesis about the role of Smolensk motifs in Tvardovsky’s literary works is once more substantiated. A review is presented of onomastic studies analysing proper names of different categories in Tvardovsky’s poems (mainly conducted by the representatives of the Voronezh Onomastic School and the author of this article). It should be noted that Smolensk proper names in the entire body of Tvardovsky’s poetry are analysed for the first time.

Coinage and the Tributary Mode of Production

2018 ◽  
Author(s):  
Eduardo Manzano Moreno
Keyword(s):  
Roman Empire ◽  
Middle Ages ◽  
Social Role ◽  
State Of The Art ◽  
Early Middle Ages ◽  
The Social ◽  
Simple Question ◽  
Mode Of Production

This chapter addresses a very simple question: is it possible to frame coinage in the Early Middle Ages? The answer will be certainly yes, but will also acknowledge that we lack considerable amounts of relevant data potentially available through state-of-the-art methodologies. One problem is, though, that many times we do not really know the relevant questions we can pose on coins; another is that we still have not figured out the social role of coinage in the aftermath of the Roman Empire. This chapter shows a number of things that could only be known thanks to the analysis of coins. And as its title suggests it will also include some reflections on greed and generosity.

scholarly journals Water-Worked Gravel Bed: State-of-the-Art Review

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 694 ◽  
Author(s):  
Ellora Padhi ◽  
Subhasish Dey ◽  
Venkappayya R. Desai ◽  
Nadia Penna ◽  
Roberto Gaudio
Keyword(s):  
State Of The Art ◽  
Flow Characteristics ◽  
Streamwise Velocity ◽  
Secondary Currents ◽  
Gravel Bed ◽  
Natural Stream ◽  
Art Research ◽  
The Comparative Study ◽  
Water Work

In a natural gravel-bed stream, the bed that has an organized roughness structure created by the streamflow is called the water-worked gravel bed (WGB). Such a bed is entirely different from that created in a laboratory by depositing and spreading gravels in the experimental flume, called the screeded gravel bed (SGB). In this paper, a review on the state-of-the-art research on WGBs is presented, highlighting the role of water-work in determining the bed topographical structures and the turbulence characteristics in the flow. In doing so, various methods used to analyze the bed topographical structures are described. Besides, the effects of the water-work on the turbulent flow characteristics, such as streamwise velocity, Reynolds and form-induced stresses, conditional turbulent events and secondary currents in WGBs are discussed. Further, the results form WGBs and SGBs are compared critically. The comparative study infers that a WGB exhibits a higher roughness than an SGB. Consequently, the former has a higher magnitude of turbulence parameters than the latter. Finally, as a future scope of research, laboratory experiments should be conducted in WGBs rather than in SGBs to have an appropriate representation of the flow field close to a natural stream.

scholarly journals From Exosome Glycobiology to Exosome Glycotechnology, the Role of Natural Occurring Polysaccharides

2021 ◽  
Vol 2 (2) ◽  
pp. 311-338
Author(s):  
Giulia Della Rosa ◽  
Clarissa Ruggeri ◽  
Alessandra Aloisi
Keyword(s):  
State Of The Art ◽  
Cell Communication ◽  
Pathological Conditions ◽  
New Findings ◽  
Cell Type Specific ◽  
New Perspective ◽  
And Function ◽  
And Personalized Medicine ◽  
Innate Ability

Exosomes (EXOs) are nano-sized informative shuttles acting as endogenous mediators of cell-to-cell communication. Their innate ability to target specific cells and deliver functional cargo is recently claimed as a promising theranostic strategy. The glycan profile, actively involved in the EXO biogenesis, release, sorting and function, is highly cell type-specific and frequently altered in pathological conditions. Therefore, the modulation of EXO glyco-composition has recently been considered an attractive tool in the design of novel therapeutics. In addition to the available approaches involving conventional glyco-engineering, soft technology is becoming more and more attractive for better exploiting EXO glycan tasks and optimizing EXO delivery platforms. This review, first, explores the main functions of EXO glycans and associates the potential implications of the reported new findings across the nanomedicine applications. The state-of-the-art of the last decade concerning the role of natural polysaccharides—as targeting molecules and in 3D soft structure manufacture matrices—is then analysed and highlighted, as an advancing EXO biofunction toolkit. The promising results, integrating the biopolymers area to the EXO-based bio-nanofabrication and bio-nanotechnology field, lay the foundation for further investigation and offer a new perspective in drug delivery and personalized medicine progress.

Sign in / Sign up

Export Citation Format

Share Document