ASSOCIATIVE DRAWING AS A GAME MODEL FOR DEVELOPING CHILD CREATIVE THINKING AND LEARNING SKILLS WITH NON-STANDARD IMAGING TECHNIQUES

2017 ◽  
Vol 8 (2) ◽  
pp. 245-251
Author(s):  
Krasimir Nikolov ◽  
◽  
Jovka Zheleva ◽  
Simona Peneva ◽  
◽  
...  
Keyword(s):  
Creative Thinking ◽  
Imaging Techniques ◽  
Game Model ◽  
Learning Skills

Lifelong physical activity as a result of the process of school education in sport culture

2017 ◽  
Vol 2 (3) ◽  
pp. 133-140
Author(s):  
Danuta Umiastowska
Keyword(s):  
Physical Activity ◽  
Creative Thinking ◽  
Self Esteem ◽  
Self Control ◽  
Physical And Mental Health ◽  
Learning Skills ◽  
Modern School ◽  
Learning Anxiety ◽  
Sport Culture ◽  
High Level

Physical activity has direct effects on good physical and mental health, develops the skills of resourcefulness and independence in children as well as builds confidence and self-esteem. In modern school tremendous mental efforts as well as a high level of self-control are expected from a child in order to gain certain learning skills. This is expected with the minimum physical activity. This situation leads to frustration, fear, and learning anxiety. It also inhibits the enjoyment of learning, human development, spontaneity and creative thinking. The aim of the study is to show how one can shape long-lasting attitudes to undertake physical activity through out the course of one’s life.

WeDo Lego Robotics as a tool for developing children’s 21st century competences

2019 ◽  
Vol 582 (7) ◽  
pp. 27-37
Author(s):  
Marlena Chlebowicz
Keyword(s):  
21St Century ◽  
Creative Thinking ◽  
Participant Observation ◽  
Dynamic Changes ◽  
Learning Skills ◽  
Team Collaboration ◽  
Meta Learning ◽  
Research Questions ◽  
Key Competences ◽  
Insight Into

The article presents the potential of Lego WeDo robotics classes for developing children’s 21st century competences. There is a postulate to shape children’s competences in times of dynamic changes. The key competences and their classifi cation are described in the introduction. There is also a description of competences in the fi eld of entrepreneurship, personal, social and learning skills competences as well as digital competences relevant in the context of the studied activities. Lego WeDo 1.0 robotics and programming classes are an opportunity to develop partecipant’s 21st century competences – evaluation of the effectiveness of using sets of bricks has become the purpose of the author’s own research. Research questions related to how creative competences, meta-learning competences and team collaboration competences developed. The research was carried out using the method of pedagogical experiment, technique of one group. The author prepared a schedule including creative exercises. Participant observation was carried out, children’s products were collected and J. P. Guilford’s test was used twice. After analyzing the results, it turned out that children achieved skills in building robots, part of the group was able to create their own instruction designs. Pupils collaborated in pairs, were more eager to construct than to program robots. The children expressed their competences of metalearning while making drawings, were able to make associations by comparing themselves to the machine, and also insight into their own minds. Some participants were aware of the complexity of the learning process. During the semester of classes, the skill of creative thinking developed, with the best results were obtained in the development of fl exibility of thinking. Participation of children in robotics and programming classes infl uenced the development of their competences – Lego WeDo bricks were an effective tool for developing the 21st century competences of participants.

scholarly journals An Instructional Design Model for TPACK Object-Based Mathematics Card Games

2021 ◽  
Vol 2 (4) ◽  
pp. 53-74
Author(s):  
Olatoye Mukaila Ayinde
Keyword(s):  
Content Knowledge ◽  
Creative Thinking ◽  
Formative Research ◽  
Matter Content ◽  
Learning Theories ◽  
Game Model ◽  
Teaching Aids ◽  
Card Games ◽  
Object Based ◽  
Practical Implications

Purpose: This study examined TPACK model as it relates to teacher’s knowledge categories such as methods of teaching subject matter (content knowledge) curriculum knowledge, knowledge about technology and pedagogical know-how etc. Approach/Methodology/Design: Conceptual analysis was discussed to establish content selection, performance procedure and problem-solving while designing an object-based game. Among the templates identified and used for Object-Based Game model are analog game model, managing learning procedure etc. The study adopted formative research in order to elucidate functional concepts and variables within the study. Findings: Games are repertoire of teaching aids and research paradigm which revolves philosophical learning theories and gaming processes. The quality of game developed depends on the qualifications; i.e. proficiency in mathematical theories and their interrelations to suit instructional concepts of game development and creative thinking abilities, pedagogical skills are required to identify learning pattern. There is a need to incorporate self-motivated experience scenes such as gaming, which characterize play and activity as being the young child’s most powerful tool in all areas of learning particularly Mathematics. Practical Implications: The study presents practical implications for teachers of mathematics. Contextualization helps learners to link new ideas to prior knowledge, and the proposed model in this study could be validated and applied in teaching mathematic concepts. Originality/value: The study adopted formative research in order to elucidate functional concepts and variables within the study. Technological Pedagogical and Content Knowledge (TPACK) object-based Mathematic card games model is designed as powerful and potential learning tools.

Mitochondrial Reconstructions Based on Serial Thick Sections and HVEM

1975 ◽  
Vol 33 ◽  
pp. 286-287
Author(s):  
Jerome J. Paulin
Keyword(s):  
Imaging Techniques ◽  
Three Dimensional ◽  
Posterior Pole ◽  
Dimensional Structure ◽  
Stereo Imaging ◽  
Thin Sections ◽  
Anatomical Features ◽  
The Past ◽  
Cellular Components ◽  
Mitochondrial Reticulum

Within the past decade it has become apparent that HVEM offers the biologist a means to explore the three-dimensional structure of cells and/or organelles. Stereo-imaging of thick sections (e.g. 0.25-10 μm) not only reveals anatomical features of cellular components, but also reduces errors of interpretation associated with overlap of structures seen in thick sections. Concomitant with stereo-imaging techniques conventional serial Sectioning methods developed with thin sections have been adopted to serial thick sections (≥ 0.25 μm). Three-dimensional reconstructions of the chondriome of several species of trypanosomatid flagellates have been made from tracings of mitochondrial profiles on cellulose acetate sheets. The sheets are flooded with acetone, gluing them together, and the model sawed from the composite and redrawn.The extensive mitochondrial reticulum can be seen in consecutive thick sections of (0.25 μm thick) Crithidia fasciculata (Figs. 1-2). Profiles of the mitochondrion are distinguishable from the anterior apex of the cell (small arrow, Fig. 1) to the posterior pole (small arrow, Fig. 2).

Application of Lattice Imaging Techniques to Amorphous Films

1975 ◽  
Vol 33 ◽  
pp. 8-9
Author(s):  
S. R. Herd ◽  
P. Chaudhari
Keyword(s):  
Nearest Neighbor ◽  
Random Network ◽  
Imaging Techniques ◽  
Network Models ◽  
Accurate Method ◽  
Direct Transmission ◽  
Lattice Imaging ◽  
Transmission Electron ◽  
Lattice Planes ◽  
Nearest Neighbor Distances

Electron diffraction and direct transmission have been used extensively to study the local atomic arrangement in amorphous solids and in particular Ge. Nearest neighbor distances had been calculated from E.D. profiles and the results have been interpreted in terms of the microcrystalline or the random network models. Direct transmission electron microscopy appears the most direct and accurate method to resolve this issue since the spacial resolution of the better instruments are of the order of 3Å. In particular the tilted beam interference method is used regularly to show fringes corresponding to 1.5 to 3Å lattice planes in crystals as resolution tests.

Studies of metaphase chromosomes in the scanning transmission x-ray microscope: Image fidelity, radiation damage and specimen preparation

1992 ◽  
Vol 50 (2) ◽  
pp. 1038-1039
Author(s):  
Shawn Williams ◽  
Xiaodong Zhang ◽  
Susan Lamm ◽  
Jack Van’t Hof
Keyword(s):  
Visible Light ◽  
Radiation Damage ◽  
Cross Section ◽  
Imaging Techniques ◽  
Dose Range ◽  
Specimen Preparation ◽  
X Rays ◽  
Metaphase Chromosomes ◽  
X Ray ◽  
Scanning Transmission

The Scanning Transmission X-ray Microscope (STXM) is well suited for investigating metaphase chromosome structure. The absorption cross-section of soft x-rays having energies between the carbon and oxygen K edges (284 - 531 eV) is 6 - 9.5 times greater for organic specimens than for water, which permits one to examine unstained, wet biological specimens with resolution superior to that attainable using visible light. The attenuation length of the x-rays is suitable for imaging micron thick specimens without sectioning. This large difference in cross-section yields good specimen contrast, so that fewer soft x-rays than electrons are required to image wet biological specimens at a given resolution. But most imaging techniques delivering better resolution than visible light produce radiation damage. Soft x-rays are known to be very effective in damaging biological specimens. The STXM is constructed to minimize specimen dose, but it is important to measure the actual damage induced as a function of dose in order to determine the dose range within which radiation damage does not compromise image quality.

An x-ray microprobe based upon a close-coupled focal-spot / glass capillary arrangement

1992 ◽  
Vol 50 (2) ◽  
pp. 1758-1759
Author(s):  
D. A. Carpenter ◽  
M. A. Taylor
Keyword(s):  
Imaging Techniques ◽  
Fluorescence Analysis ◽  
High Sensitivity ◽  
Specimen Preparation ◽  
X Rays ◽  
Glass Capillary ◽  
Close Coupling ◽  
X Ray ◽  
Point To Point ◽  
Beam Damage

The development of intense sources of x rays has led to renewed interest in the use of microbeams of x rays in x-ray fluorescence analysis. Sparks pointed out that the use of x rays as a probe offered the advantages of high sensitivity, low detection limits, low beam damage, and large penetration depths with minimal specimen preparation or perturbation. In addition, the option of air operation provided special advantages for examination of hydrated systems or for nondestructive microanalysis of large specimens.The disadvantages of synchrotron sources prompted the development of laboratory-based instrumentation with various schemes to maximize the beam flux while maintaining small point-to-point resolution. Nichols and Ryon developed a microprobe using a rotating anode source and a modified microdiffractometer. Cross and Wherry showed that by close-coupling the x-ray source, specimen, and detector, good intensities could be obtained for beam sizes between 30 and 100μm. More importantly, both groups combined specimen scanning with modern imaging techniques for rapid element mapping.

SEM/FESEM imaging of lamellar structures in melt extruded polyethylene films

1992 ◽  
Vol 50 (2) ◽  
pp. 1142-1143
Author(s):  
R.T. Chen ◽  
M.G. Jamieson ◽  
R. Callahan
Keyword(s):  
Imaging Techniques ◽  
Membrane Surface ◽  
High Stress ◽  
Extrusion Direction ◽  
Polymeric Membranes ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Crystalline Polymers ◽  
Lamellar Structures ◽  
Resolution Imaging

“Row lamellar” structures have previously been observed when highly crystalline polymers are melt-extruded and recrystallized under high stress. With annealing to perfect the stacked lamellar superstructure and subsequent stretching in the machine (extrusion) direction, slit-like micropores form between the stacked lamellae. This process has been adopted to produce polymeric membranes on a commercial scale with controlled microporous structures. In order to produce the desired pore morphology, row lamellar structures must be established in the membrane precursors, i.e., as-extruded and annealed polymer films or hollow fibers. Due to the lack of pronounced surface topography, the lamellar structures have typically been investigated by replica-TEM, an indirect and time consuming procedure. Recently, with the availability of high resolution imaging techniques such as scanning tunneling microscopy (STM) and field emission scanning electron microscopy (FESEM), the microporous structures on the membrane surface as well as lamellar structures in the precursors can be directly examined.The materials investigated are Celgard® polyethylene (PE) flat sheet membranes and their film precursors, both as-extruded and annealed, made at different extrusion rates (E.R.).

High-resolution topographic SEM and radiation damage: The rationale for using low beam voltage

1992 ◽  
Vol 50 (2) ◽  
pp. 1278-1279
Author(s):  
James Pawley ◽  
David Joy
Keyword(s):  
High Resolution ◽  
Imaging Techniques ◽  
Morphological Structure ◽  
Radiation Sensitivity ◽  
Beam Specimen ◽  
Measured Signal ◽  
Practical Consideration ◽  
Interaction Volume ◽  
Impact Area ◽  
Signal Contrast

The scanning electron microscope (SEM) builds up an image by sampling contiguous sub-volumes near the surface of the specimen. A fine electron beam selectively excites each sub-volume and then the intensity of some resulting signal is measured and then plotted as a corresponding intensity in an image. The spatial resolution of such an image is limited by at least three factors. Two of these determine the size of the interaction volume: the size of the electron probe and the extent to which detectable signal is excited from locations remote from the beam impact area. A third limitation emerges from the fact that the probing beam is composed of a number of discrete particles and therefore that the accuracy with which any detectable signal can be measured is limited by Poisson statistics applied to this number (or to the number of events actually detected if this is smaller). As in all imaging techniques, the limiting signal contrast required to recognize a morphological structure is constrained by this statistical consideration. The only way to overcome this limit is to increase either the contrast of the measured signal or the number of beam/specimen interactions detected. Unfortunately, these interactions deposit ionizing radiation that may damage the very structure under investigation. As a result, any practical consideration of the high resolution performance of the SEM must consider not only the size of the interaction volume but also the contrast available from the signal producing the image and the radiation sensitivity of the specimen.

Quantitative nano-characterization of heterogeneous catalysts

1995 ◽  
Vol 53 ◽  
pp. 398-399
Author(s):  
P.A. Crozier ◽  
M. Pan
Keyword(s):  
Heterogeneous Catalysts ◽  
Low Dose ◽  
Imaging Techniques ◽  
Structural Features ◽  
Catalyst Characterization ◽  
New Developments ◽  
Double Phase ◽  
Phase Systems ◽  
Dose Imaging

Heterogeneous catalysts can be of varying complexity ranging from single or double phase systems to complicated mixtures of metals and oxides with additives to help promote chemical reactions, extend the life of the catalysts, prevent poisoning etc. Although catalysis occurs on the surface of most systems, detailed descriptions of the microstructure and chemistry of catalysts can be helpful for developing an understanding of the mechanism by which a catalyst facilitates a reaction. Recent years have seen continued development and improvement of various TEM, STEM and AEM techniques for yielding information on the structure and chemistry of catalysts on the nanometer scale. Here we review some quantitative approaches to catalyst characterization that have resulted from new developments in instrumentation.HREM has been used to examine structural features of catalysts often by employing profile imaging techniques to study atomic details on the surface. Digital recording techniques employing slow-scan CCD cameras have facilitated the use of low-dose imaging in zeolite structure analysis and electron crystallography. Fig. la shows a low-dose image from SSZ-33 zeolite revealing the presence of a stacking fault.

Sign in / Sign up

Export Citation Format

Share Document