scholarly journals Development of Guided Inquiry based E-Learning Teaching Material on the Intermolecular Forces Enriched with Molview

2021 ◽  
Vol 2 (2) ◽  
pp. 80
Author(s):  
Nur Indah Agustina ◽  
Munzil Munzil ◽  
Habiddin Habiddin ◽  
M. Muchson

The intermolecular force is one of the chemistry topics covered in the high school curriculum in Indonesia. As the characteristics of chemistry concepts in general, intermolecular forces concepts can be presented in the three levels of chemical representations (microscopic, symbolic, and macroscopic).  Currently, chemistry teaching materials are available in Indonesian schools mostly have limited support for helping students to visualize the molecular aspect of intermolecular forces concepts mainly in the form of three-dimensional space (3D). This study aimed to produce an E-Learning teaching material enriched with 3D Molecular Visualization. The product (teaching material) in this study is presented by considering the syntax of guided inquiry-based learning. The product was developed with the procedure adopted from Lee and Owens, including assessment/analysis, need assessment, front-end analysis, design, and development. The product is valid and suitable to be applied in online chemistry teaching. However, further study to investigate the effectiveness of this product empirically need to be explored in the future.

Author(s):  
Christos Bouras ◽  
Vasileios Triglianos ◽  
Thrasyvoulos Tsiatsos

Three dimensional Collaborative Virtual Environments are a powerful form of collaborative telecommunication applications, enabling the users to share a common three-dimensional space and interact with each other as well as with the environment surrounding them, in order to collaboratively solve problems or aid learning processes. Such an environment is “EVE Training Area tool” which is supported by “EVE platform”. This tool is a three-dimensional space where participants, represented by three-dimensional humanoid avatars, can use a variety of e-collaboration tools. This paper presents advanced functionality that has been integrated on “EVE Training Area tool” in order to support: (a) multiple collaborative learning techniques (b) Spatial audio conferencing, which is targeted to support principle 3 (augmenting user's representation and awareness). Furthermore the paper presents technological and implementation issues concerning the evolution of “EVE platform” in order to support this functionality.


Author(s):  
David Philpott ◽  
Dennis Sharpe ◽  
Rose Neville

This paper outlines the findings of a study that explores perspectives of e-learning for aboriginal students in five coastal communities in Labrador, Canada. The rural nature of many communities in the province of Newfoundland and Labrador, coupled with a dramatically declining enrollment, has resulted in expanding use of e-learning as a means to provide quality high school curriculum. Recently, a Community University Research Alliance partnered with stakeholders to explore the success of e-learning in the province. Through one of the projects of this alliance, the authors examined the success of this mode of delivery for aboriginal students from the perspective of the students themselves, as well as the perspective of parents and educators. Additionally, student performance was examined in comparison to provincial peers. A wealth of data emerged which affords insights into factors that support and hinder e-learning in coastal areas and also informs educators about the diverse learning characteristics and needs of aboriginal students. As Canadian educators are increasingly challenged to address achievement issues that continue to characterize aboriginal populations, this study offers important data on the viability of e-learning as a mode of curriculum delivery. Résumé : Cet article présente les résultats d’une étude qui explore les perspectives de l’apprentissage en ligne pour les élèves autochtones dans cinq collectivités côtières du Labrador, Canada. Le caractère rural d’un grand nombre de collectivités de la province de Terre-Neuve-et-Labrador, jumelé à une baisse spectaculaire de la scolarisation, a mené à une utilisation accrue de l’apprentissage en ligne comme solution permettant d’assurer un curriculum de qualité au secondaire. Récemment, une alliance de recherche université-communauté a travaillé de pair avec les intervenants afin d’étudier les résultats de l’apprentissage en ligne dans la province. Grâce à l’un des projets de cette alliance, les auteurs ont examiné le succès de ce mode de prestation auprès d’élèves autochtones du point de vue des élèves eux-mêmes, ainsi que du point de vue de leurs parents et de leurs éducateurs. En outre, le rendement des élèves a été comparé à celui de leurs pairs au niveau de la province. Une foule de données en sont ressorties, ce qui permet de mieux comprendre les facteurs qui favorisent et qui entravent l’apprentissage en ligne dans les zones côtières; ces données informent également les éducateurs sur la diversité des caractéristiques et des besoins d’apprentissage des élèves autochtones. Les éducateurs canadiens sont de plus en plus mis au défi de trouver un moyen de surmonter les problèmes de réussite scolaire qui continuent de caractériser les populations autochtones, et cette étude leur fournit des données importantes sur la viabilité de l’apprentissage en ligne comme mode de prestation du curriculum.


Author(s):  
Lucas Walsh

The development of online curriculum provides an opportunity to rethink traditional workflows and approaches to curriculum mapping. An XML-based single-source model is used to illustrate some key practical and conceptual challenges. A mezzanine approach to curriculum is proposed, which seeks to conceive of curriculum as a three-dimensional space embedded within various networks. The final part of the discussion then seeks to contextualise these challenges in the recent climate in which user-generated, participatory technologies have made a resurgence. Here, the single source case study highlights some complimentary benefits of using a conventional learning-object approach that provides scope to encompass the social, participatory, and collaborative aspects of “E-learning 2.0.”


Author(s):  
Christos Bouras ◽  
Eri Giannaka ◽  
Thrasyvoulos Tsiatsos

The main goal of this chapter is to facilitate educational designers and developers by providing a point of reference for making decisions on how to incorporate 3D environments into the applications they develop as well as for extending their capabilities by integrating more functionality. Therefore, this chapter presents the design principles for virtual spaces, which aim at supporting multi-user communication in web-based learning communities. In addition the implementation of these principles is presented using as point of reference EVE Training Area. This environment constitutes a three-dimensional space where participants, represented by 3D humanoid avatars, have the ability to use a variety of 3D e-collaboration tools for learning together. Furthermore, this chapter presents how these principles could be used as criteria for validating and extending ready Web2.0 Immersive worlds for supporting collaborative e-learning. Finally, collaborative e-learning usage scenarios that could be realized by exploiting collaborative virtual environments are described.


2014 ◽  
Vol 12 (1) ◽  
pp. 13-37 ◽  
Author(s):  
Christos Bouras ◽  
Vasileios Triglianos ◽  
Thrasyvoulos Tsiatsos

Three dimensional Collaborative Virtual Environments are a powerful form of collaborative telecommunication applications, enabling the users to share a common three-dimensional space and interact with each other as well as with the environment surrounding them, in order to collaboratively solve problems or aid learning processes. Such an environment is “EVE Training Area tool” which is supported by “EVE platform”. This tool is a three-dimensional space where participants, represented by three-dimensional humanoid avatars, can use a variety of e-collaboration tools. This paper presents advanced functionality that has been integrated on “EVE Training Area tool” in order to support: (a) multiple collaborative learning techniques (b) Spatial audio conferencing, which is targeted to support principle 3 (augmenting user's representation and awareness). Furthermore the paper presents technological and implementation issues concerning the evolution of “EVE platform” in order to support this functionality.


2016 ◽  
pp. 1223-1248
Author(s):  
Christos Bouras ◽  
Vasileios Triglianos ◽  
Thrasyvoulos Tsiatsos

Three dimensional Collaborative Virtual Environments are a powerful form of collaborative telecommunication applications, enabling the users to share a common three-dimensional space and interact with each other as well as with the environment surrounding them, in order to collaboratively solve problems or aid learning processes. Such an environment is “EVE Training Area tool” which is supported by “EVE platform”. This tool is a three-dimensional space where participants, represented by three-dimensional humanoid avatars, can use a variety of e-collaboration tools. This paper presents advanced functionality that has been integrated on “EVE Training Area tool” in order to support: (a) multiple collaborative learning techniques (b) Spatial audio conferencing, which is targeted to support principle 3 (augmenting user's representation and awareness). Furthermore the paper presents technological and implementation issues concerning the evolution of “EVE platform” in order to support this functionality.


Author(s):  
David A. Agard ◽  
Yasushi Hiraoka ◽  
John W. Sedat

In an effort to understand the complex relationship between structure and biological function within the nucleus, we have embarked on a program to examine the three-dimensional structure and organization of Drosophila melanogaster embryonic chromosomes. Our overall goal is to determine how DNA and proteins are organized into complex and highly dynamic structures (chromosomes) and how these chromosomes are arranged in three dimensional space within the cell nucleus. Futher, we hope to be able to correlate structual data with such fundamental biological properties as stage in the mitotic cell cycle, developmental state and transcription at specific gene loci.Towards this end, we have been developing methodologies for the three-dimensional analysis of non-crystalline biological specimens using optical and electron microscopy. We feel that the combination of these two complementary techniques allows an unprecedented look at the structural organization of cellular components ranging in size from 100A to 100 microns.


Author(s):  
K. Urban ◽  
Z. Zhang ◽  
M. Wollgarten ◽  
D. Gratias

Recently dislocations have been observed by electron microscopy in the icosahedral quasicrystalline (IQ) phase of Al65Cu20Fe15. These dislocations exhibit diffraction contrast similar to that known for dislocations in conventional crystals. The contrast becomes extinct for certain diffraction vectors g. In the following the basis of electron diffraction contrast of dislocations in the IQ phase is described. Taking account of the six-dimensional nature of the Burgers vector a “strong” and a “weak” extinction condition are found.Dislocations in quasicrystals canot be described on the basis of simple shear or insertion of a lattice plane only. In order to achieve a complete characterization of these dislocations it is advantageous to make use of the one to one correspondence of the lattice geometry in our three-dimensional space (R3) and that in the six-dimensional reference space (R6) where full periodicity is recovered . Therefore the contrast extinction condition has to be written as gpbp + gobo = 0 (1). The diffraction vector g and the Burgers vector b decompose into two vectors gp, bp and go, bo in, respectively, the physical and the orthogonal three-dimensional sub-spaces of R6.


2004 ◽  
Vol 71 ◽  
pp. 1-14
Author(s):  
David Leys ◽  
Jaswir Basran ◽  
François Talfournier ◽  
Kamaldeep K. Chohan ◽  
Andrew W. Munro ◽  
...  

TMADH (trimethylamine dehydrogenase) is a complex iron-sulphur flavoprotein that forms a soluble electron-transfer complex with ETF (electron-transferring flavoprotein). The mechanism of electron transfer between TMADH and ETF has been studied using stopped-flow kinetic and mutagenesis methods, and more recently by X-ray crystallography. Potentiometric methods have also been used to identify key residues involved in the stabilization of the flavin radical semiquinone species in ETF. These studies have demonstrated a key role for 'conformational sampling' in the electron-transfer complex, facilitated by two-site contact of ETF with TMADH. Exploration of three-dimensional space in the complex allows the FAD of ETF to find conformations compatible with enhanced electronic coupling with the 4Fe-4S centre of TMADH. This mechanism of electron transfer provides for a more robust and accessible design principle for interprotein electron transfer compared with simpler models that invoke the collision of redox partners followed by electron transfer. The structure of the TMADH-ETF complex confirms the role of key residues in electron transfer and molecular assembly, originally suggested from detailed kinetic studies in wild-type and mutant complexes, and from molecular modelling.


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