The impact of students’ educational background, interest in learning, formal reasoning and visualisation abilities on gas context-based exercises achievements with submicro-animations

2019 ◽  
Vol 20 (3) ◽  
pp. 633-649
Author(s):  
Jerneja Pavlin ◽  
Saša A. Glažar ◽  
Miha Slapničar ◽  
Iztok Devetak

The purpose of this paper is to explore and explain students’ achievements in solving context-based gas exercises comprising the macroscopic and submicroscopic levels of chemical concepts. The influence of specific variables, such as interest in learning, formal-reasoning abilities, and visualisation abilities, is a significant factor that should be considered when explaining students’ achievements with context-based exercises. Seventy-nine students of three age groups (12, 16, and 23) participated in the study. Questionnaires, tests, and a semi-structured interview including computer-displayed context-based exercises were used to collect data. In addition, an eye-tracker was used to determine the exact location of the participants’ points of gaze. The results show that students on average answered correctly from 40 to 79% of all questions in the context-based exercises. The context-based exercise related to air compression is indicated as being difficult for students. In students’ explanations of different levels of chemical concepts, representation difficulties are detected in all three age groups of students. Students’ achievements in solving context-based gas exercises do not depend on interest in learning chemistry and visualisation abilities. However, statistically significant differences exist in total fixation duration on the correct submicrorepresentation animation between students with different formal-reasoning abilities. The results serve as a starting point for the planning of different context-based exercises and problems comprising the chemistry triplet with 3D dynamic submicrorepresentations.

2018 ◽  
Vol III (I) ◽  
pp. 34-45
Author(s):  
Salman Amin ◽  
Saadia Fatima ◽  
Sajjad Ali

This research is designed to explore the impact of Pakistani dramas of the private channel on Pakistani women. To witness various effects caused by dramas, detailed research is carried out. To gather and document the perceptions of the female viewers of Rawalpindi and Islamabad, a detailed questionnaire was prepared. Through a sample of 300 respondents, data was collected from people of different age groups, educational background and occupational groups. The perceptions of viewers about the various content in dramas showed that private channels provide a lot of content for entertainment, education, comedy, information, serious, horror, emotional and musical content. Overall, it was observed that Geo TV dramas provide the content mentioned more frequently than Hum TV and ARY Digital. The study concludes that there are significant changes taking place in all the mentioned domains. The degree to which private channels display different lifestyles was another important variable of the study that has been discussed for so long, but it was observed from the finding that dramas of private channels promote multiple lifestyles (Western and Indian) on an equal basis.


2020 ◽  
Vol 3 (1) ◽  
pp. 27
Author(s):  
Nanda Rahmatul Wahidah ◽  
Rahmah Johar ◽  
Cut Morina Zubainur

Geometry is one of the topics that students must comprehend in mathematics. However, in reality, the students' ability concerning geometry is relatively low due to their low spatial reasoning ability. The ELPSA framework is one of the solutions to develop students' spatial reasoning abilities. This study aimed to describe students' spatial reasoning ability and the impact on retention through the ELPSA framework. This research was part of the ELPSA framework research and development. The subjects were four students, chosen from 25 Grade 7 students from one of the junior high schools in Banda Aceh. They were selected based on the percentage of spatial reasoning aspects mastered. The instrument used was a semi-structured interview that was preceded by a written test. The results showed that the four subjects could manipulate objects in their mind to change the shape of D-3 to D-2. However, one of them could not determine its relation precisely. Three out of four subjects could imagine the appearance of an object from different perspectives. Besides, two out of four subjects could visualize objects to determine the number of unit cubes contained in the solid geometry and only one subject could imagine objects from various perspectives to determine the surface area but did not use the given measurement.


2017 ◽  
Vol 41 (S1) ◽  
pp. S84-S84
Author(s):  
F. Schultze-Lutter ◽  
C. Michel ◽  
B.G. Schimmelmann ◽  
D. Hubl

IntroductionCompared to 16–40-year-olds, 8–15-year-olds of the community reported higher frequencies of perceptual and lesser clinical significance of non-perceptual attenuated psychotic symptoms (APS).Objectives/aimsWe examined if a similar age effect is present in a clinical never-psychotic sample (n = 133) referred to a specialized service for clinical suspicion of developing psychosis.MethodsAPS and brief intermittent psychotic symptoms (BIPS) were assessed using items P1-3 and P5 (non-perceptual) and P4 (perceptual) of the structured interview for psychosis-risk syndromes, current axis-I disorders with the mini-international neuropsychiatric interview and psychosocial functioning with the Social and Occupational Functioning Assessment Scale (score < 71 indicative of at least some difficulty in social, occupational, or school functioning).ResultsOverall, 64% reported APS (61%) or BIPS (7%); any perceptual APS/BIPS was reported by 43% and any non-perceptual APS/BIPS by 44%. In correspondence to the results of the community study, perceptual but not non-perceptual APS/BIPS were significantly more frequent in younger age groups below the age of 16 (8–12 yrs: OR = 4.7 (1.1–19.5); 13–15 yrs: OR = 2.7 (0.9–7.7); 20–24-year-olds as reference group). An age effect of APS/BIPS on presence of any current axis-I disorder (59%) or functional difficulties (67%) could not be detected. Yet, when APS onset requirements were met, the likelihood of a psychiatric diagnosis increased significantly with advancing age.ConclusionOverall, the replicated age effect on perceptual APS in this clinical sample highlights the need to examine ways to distinguish clinically relevant perceptual APS from perceptual aberrations likely remitting over the course of adolescence.Disclosure of interestThe authors have not supplied their declaration of competing interest.


2019 ◽  
Vol 31 (2) ◽  
pp. 359-377 ◽  
Author(s):  
Khurram Sharif ◽  
Norizan Kassim ◽  
Mohd Nishat Faisal

Purpose The purpose of this paper is to investigate the impact of key demographics (i.e. gender, age, education and income) on the rich Muslim consumers’ Domains of Living (DoL). DoL were broken down into being, belonging and becoming domains. Relationship between the DoL and luxury consumption behavior (LCB) was analyzed as well. Being domain included elements that indicated who one is and how one defines the self; belonging domain linked an individual to his/her environment; and becoming domain referred to the set of social activities that an individual performed. Design/methodology/approach A questionnaire-based survey was conducted to get insights into the LCB of affluent Muslim consumers and how these insights related to key demographics and DoL. The researched population was Qatari consumers who were buying luxury products and belonged to a high-income bracket. Stratified sampling method was considered appropriate because the key objective of the study was to generalize the results across the affluent Qatari population. Stratification of the population was primarily done through the selected demographic variables. This research survey, conducted in Qatar, resulted in the collection of 213 usable questionnaires. General Linear Model Multivariate Analysis and Multiple Regression Analysis were used to establish the goodness of fit and to test the proposed hypotheses. Findings Results indicated that there were significant LCB differences between the genders, age groups, income levels and educational background. Furthermore, there was a significant association between the three DOLs and LCB. There were indications that for affluent Qatari Muslims, consumption of luxury products had become a socially accepted norm. Fulfillment of luxury needs did not isolate rich Muslims from their family and friends or made them unhappy about luxury consumption. This behavior could be related to high levels of affluence among Qataris that makes acquisition of luxury products easy and not effort or time intensive. Practical implications Islamic luxury markets need to adopt an appropriate balance of global (considering global luxury trends) and local (based on cultural, social and religious forces) marketing strategies to engage rich Muslim consumers. Originality/value This paper presents LCB from the perspective of affluent Muslim consumers within the context of DoL and through the lens of key demographic variables.


2017 ◽  
Vol 16 (3) ◽  
pp. 308-323
Author(s):  
Miha Slapničar ◽  
Iztok Devetak ◽  
Saša A. Glažar ◽  
Jerneja Pavlin

The aim of the research was to identify how Slovenian primary and secondary school students of various age groups explain the particulate nature of the states of matter of water and air. The qualitative research included five 12, 14, and 16 year old students. A semi-structured interview including four computer-displayed tasks was used for the data collection. The research results show that all of the students correctly identified the states of matter of water at the particulate level, but not of air. It was found that the students had difficulty justifying their selection. The study confirmed the existence of: (a) misunderstanding regarding the interpretation of the particulate nature of matter, (b) a failure to distinguish between particle and matter, and (c) the inadequate description of submicroscopic level of matter with macroscopic level concept. The survey results provide an insight into the mindset of students and serve as a starting point for teachers’ lesson planning. Keywords: authentic tasks, macroscopic level, misunderstanding of pressure, states of matter, submicroscopic level.


2003 ◽  
Vol 73 (5) ◽  
pp. 335-342 ◽  
Author(s):  
Alexy ◽  
Kersting ◽  
Sichert-Hellert

Intake of vitamins A, C, and E was evaluated and age and time trends were assessed on the basis of 3-day weighed dietary records (n = 5121) of 2- to 18-year old boys (n = 417) and girls (n = 425) enrolled in the DONALD Study (Dortmund Nutritional and Anthropometric Longitudinally Designed Study) 1986–2001. Intake of vitamin A remains stable over time, intake of vitamin C increases linearly, and intake of vitamin E follows a nonlinear trend. Age trends of vitamins A and C (per MJ) were nonlinear with a minimum at the beginning adolescence, while intake of vitamin E (per MJ) increased linearly. Girls had higher nutrient densities but lower intakes expressed as percent of reference values. Fortified food in total had a higher impact on time trends of nutrient intake than other single food groups defined here. Our results point to the impact of the food industry on long-term nutrient intake, but also underline the necessity of nutrition education even in young age groups to improve vitamin intake.


2012 ◽  
Vol 17 (4) ◽  
pp. 257-265 ◽  
Author(s):  
Carmen Munk ◽  
Günter Daniel Rey ◽  
Anna Katharina Diergarten ◽  
Gerhild Nieding ◽  
Wolfgang Schneider ◽  
...  

An eye tracker experiment investigated 4-, 6-, and 8-year old children’s cognitive processing of film cuts. Nine short film sequences with or without editing errors were presented to 79 children. Eye movements up to 400 ms after the targeted film cuts were measured and analyzed using a new calculation formula based on Manhattan Metrics. No age effects were found for jump cuts (i.e., small movement discontinuities in a film). However, disturbances resulting from reversed-angle shots (i.e., a switch of the left-right position of actors in successive shots) led to increased reaction times between 6- and 8-year old children, whereas children of all age groups had difficulties coping with narrative discontinuity (i.e., the canonical chronological sequence of film actions is disrupted). Furthermore, 4-year old children showed a greater number of overall eye movements than 6- and 8-year old children. This indicates that some viewing skills are developed between 4 and 6 years of age. The results of the study provide evidence of a crucial time span of knowledge acquisition for television-based media literacy between 4 and 8 years.


2013 ◽  
Vol 1 (3) ◽  
pp. 9
Author(s):  
Jennifer Lee Brady ◽  
Annie Hoang ◽  
Olivia Siswanto ◽  
Jordana Riesel ◽  
Jacqui Gingras

Obtaining dietetic licensure in Ontario requires completion of a Dietitians of Canada (DC) accredited four-year undergraduate degree in nutrition and an accredited post-graduate internship or combined Master’s degree program. Given the scarcity of internship positions in Ontario, each year approximately two-thirds of the eligible applicants who apply do not receive a position XX, XX, XX, XX, XX, XX, in press). Anecdotally, not securing an internship position is known to be a particularly disconcerting experience that has significant consequences for individuals’ personal, financial, and professional well-being. However, no known empirical research has yet explored students’ experiences of being unsuccessful in applying for internship positions. Fifteen individuals who applied between 2005 and 2009 to an Ontario-based dietetic internship program, but were unsuccessful at least once, participated in a one-on-one semi-structured interview. Findings reveal that participants’ experiences unfold successively in four phases that are characterized by increasingly heightened emotional peril: naïveté, competition, devastation, and frustration. The authors conclude that the current model of dietetic education and training in Ontario causes lasting distress to students and hinders the future growth and vitality of the dietetic profession. Further research is required to understand the impact of the current model on dietetic educators, internship coordinators, and preceptors as coincident participants in the internship application process.


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