A cross-age study of science student teachers' chemistry attitudes

2015 ◽  
Vol 16 (2) ◽  
pp. 228-236 ◽  
Author(s):  
Muammer Çalık ◽  
Neslihan Ültay ◽  
Ali Kolomuç ◽  
Ayşe Aytar

The aim of this study is to investigate the effects of some variables (gender and year of study) on science student teachers' (SSTs) chemistry attitudes. An adapted version of Chemistry Attitudes and Experiences Questionnaire was administered to 983 SSTs drawn from four different universities in the region of Eastern Black Sea, Turkey. Significant differences between genders' mean scores of the CAEQ indicate that the females somewhat develop stronger positive attitudes towards chemistry than do the males. Furthermore, because the first year of the study generally had the highest mean scores of the three subscales of the CAEQ, it can be deduced that tertiary education lacks improving the SSTs' positive chemistry attitudes to a satisfied level and/or a large effect size. Hence, its attitudinal quality should be intimately inquired.

2010 ◽  
Vol 2 (1) ◽  
pp. 26-43
Author(s):  
Takawira Kazembe

Forty first-year primary school student teachers at a Teacher Training College in Masvingo Province, Zimbabwe, participated in an action research study, employing the science student portfolio, during February to July, 2008 . They used the portfolio to record their prior knowledge about the lesson topic, new information learnt during the lesson, and how the new information related to their prior knowledge. Comments on lessons, monthly tests and assignment scores, reflections and a page-long conclusion were also recorded in the portfolio. The monthly test scores improved as the study progressed. Interviews revealed that alternative conceptions emanated from teachers, peers, textbooks, and the failure of students to understand teachers’ explanations. Students’ and administration’s comments revealed stakeholders’ satisfaction with the portfolio’s effectiveness.


Author(s):  
Bridget Mangwegape ◽  

The paper sought to investigate how first year University student’s-teachers understand and instil appreciation of the beauty of Setswana language. Since the proverbs are carriers of cultural values, practices, rituals, and traditional poetry, they are rich in meaning, they can be used to teach moral values for the sake of teaching character building among the students and teaching Setswana at the same time. Proverbs contain values of wisdom, discipline, fairness, preparedness, destiny, happiness, and efforts. Proverbs are short sayings that contain some wisdom or observation about life and or role-play and to use a few of the proverbs to reinforce the meaning, using proverbs as a pedagogical strategy, the researcher has observed that student teachers find it difficult to learn and teach learners at school. Students-teacher’s think and feel about how they conceptualize proverbs, how they define their knowledge and use of Setswana proverbs. The lecturer observed how the nature of proverbs are linked to the culture embedded in the language. In Setswana language there is a proverb that says, “Ngwana sejo o a tlhakanelwa” (A child is a food around which we all gather) which implies that the upbringing of a child is a communal responsibility and not an individual responsibility. Put in simple terms, a child is a child to all parents or adults, since a child’s success is not a family’s success but the success of the community. In doing so, the paper will explore on how student-teachers could make use of proverbs to keep the class interested in learning Setswana proverbs. As a means of gathering qualitative data, a questionnaire was designed and administered to student-teachers and semi-structured interviews were conducted with student teachers. The findings revealed that despite those students-teachers’ positive attitudes towards proverb instruction, they did not view their knowledge of Setswana proverbs as well as the teaching of proverbs. The paper displays that proverbs constitute an important repository of valid materials that can provide student-teachers with new instructional ideas and strategies in teaching Setswana proverbs and to teach different content, which includes Ubuntu and vocabulary and good behaviour. Proverbs must be taught and used by teachers and learners in their daily communication in class and outside the classroom in order to improve their language proficiency.


2016 ◽  
Vol 5 (3) ◽  
Author(s):  
Trevor Moodley ◽  
Stanley A. Adendorff ◽  
Subethra Pather

This study explored foundation phase first year student teachers’ perceptions about mathematics. The focus on their attitudes towards mathematics in two roles – (1) as learners of mathematics, based on their prior experiences at school and (2) as aspirant teachers of mathematics for children in the early grades. Data sources were students’ drawings/collages as well as written interpretations and elaborations of the drawings/collages. The findings indicated that participants had generally negative attitudes towards the learning of mathematics. Factors such as the transition from primary to high school, teacher qualities and mathematics-related anxiety contributed to the shaping of their attitudes. It was encouraging to note that over half the participants expressed positive attitudes in their roles as future teachers, with all expressing the desire to provide better mathematics experiences to their future learners.


2019 ◽  
Vol 18 (3) ◽  
pp. 118
Author(s):  
Anderson Pontes Morales ◽  
Felipe Sampaio-Jorge ◽  
Thiago Barth ◽  
Alessandra Alegre De Matos ◽  
Luiz Felipe Da Cruz Rangel ◽  
...  

Introduction: The aim of this study was to test the hypothesis that caffeine supplementation (6 mg·kg-1 body mass) for 4-days, followed by acute intake, would impact five male triathletes output power after performed submaximal intensity exercise. Methods: This was a randomized, double-blind, placebo-controlled crossover study, placebo (4-day) - placebo (acute) PP, placebo (4-days) -caffeine (acute) PC, and caffeine (4-day) - caffeine (acute) CC. Participants abstained from dietary caffeine sources for 4 days and ingested capsules containing either placebo or caffeine (6 mg.kg-1 body mass day in one absorption). The acute trials the capsules containing placebo or caffeine (6 mg.kg-1 body mass day in one absorption) were ingested 60min before completing exercise in a treadmill for 40min (80% VO2max) and to perform the Wingate test. Results: Blood lactate was determined before, 60min after ingestion, and immediately after the exercise on the treadmill, the Wingate test, and after the recovery (10-min). CC and PC trials did not change the cardiopulmonary variables (P>0.05) and the anaerobic power variables (peak/mean power output and fatigue index) (P>0.05). The PC trial compared with PP promoted improvements in the curve power output in 2 sec by 31.19% (large effect-size d = 1.08; P<0.05) and 3 sec by 20% (large effect-size d = 1.19; P<0.05). A 10min recovery was not sufficient to reduce blood lactate concentration in the PC trial compared with PP (PC, 13.73±2.66 vs. PP, 10.26±1.60 mmol.L-1; P<0.05, respectively) (P<0.05). Conclusion: In conclusion, these results indicate that caffeine supplementation (6 mg·kg-1 body mass) for 4 days, followed by acute ingestion, did not impact the triathletes output power after performed submaximal intensity exercise. Nutritional interventions may help researchers and athletes to adapt strategies for manipulating caffeine use.Key-words: caffeine metabolism, Wingate test, blood lactate, performance.


2021 ◽  
pp. 003452372198937
Author(s):  
Caroline Elbra-Ramsay

This paper reports the findings of a small-scale study seeking to investigate how student teachers, within a three-year undergraduate programme, understand feedback. Feedback has been central to debates and discussion in the assessment literature in recent years. Hence, in this paper, feedback is positioned within the often-contradictory discourses of assessment, including perspectives on student and teacher feedback. The study focused on two first year undergraduate student teachers at a small university in England and considered the relationships between their understanding of feedback as a student, their understanding of feedback as an emerging teacher, and the key influences shaping these understandings. A phenomenological case study methodology was employed with interviews as the prime method of data collection. Themes emerged as part of an Nvivo analysis, including emotional responses, relationships and dialogue, all of which appear to have impacted on the students’ conceptual understanding of feedback as indelibly shaped by its interpersonal and affective, rather than purely cognitive or ideational, dimensions. The paper therefore seeks to contribute to the wider feedback discourse by offering an analysis of empirical data. Although situated within English teacher education, there are tentative conclusions that are applicable to international teacher education and as well as higher education more generally.


2021 ◽  
Vol 11 (10) ◽  
pp. 4390
Author(s):  
Carlos Sosa ◽  
Alberto Lorenzo ◽  
Juan Trapero ◽  
Carlos Ribas ◽  
Enrique Alonso ◽  
...  

The aim of this study was (I) to establish absolute specific velocity thresholds during basketball games using local positional system (LPS) and (II) to compare the speed profiles between various levels of competitions. The variables recorded were total distance (TD); meters per minute (m·min); real time (min); maximum speed (Km h−1), distance (m), percentage distance, and percentage duration invested in four speed zones (standing–walking; jogging; running; and high-speed running). Mean and standard deviation (±SD) were calculated, and a separate one-way analysis of variance was undertaken to identify differences between competitions. TD (3188.84 ± 808.37 m) is covered by standing–walking (43.51%), jogging (36.58%), running (14.68%), and sprinting (5.23%) activities. Overall, 75.22% of the time is invested standing–walking, jogging (18.43%), running (4.77%), and sprinting (1.89%). M·min (large effect size), % duration zone 2 (moderate effect size); distance zone 4 (large effect size), and % distance zone 4 (very large effect size) are significantly higher during junior than senior. However, % distance zone 1 (large effect size) and % duration zone 1 (large effect size) were largely higher during senior competition. The findings of this study reveal that most of the distance and play time is spent during walking and standing activities. In addition, the proportion of time spent at elevated intensities is higher during junior than in senior competition.


Author(s):  
Effat Davoudi-Monfared ◽  
Mostafa Mohammadi ◽  
Meysam Khoshavi ◽  
Hossein Khalili

Background: The effect of midodrine on lactate clearance has not been assessed in critically ill patients yet. Objective: The goal of this study was to assess the effect of adjunctive midodrine therapy on lactate clearance in patients with septic shock. Materials & methods: Patients with septic shock were assigned to receive either adjunctive midodrine 10 mg three-times a day for 5 days (midodrine group = 15 patients) or not (control group = 13 patients). Results: The lactate clearance was significantly faster in the midodrine group than the control group (p = 0.049) with a large effect size ([Formula: see text] = 0.141). Conclusion: When midodrine was added to intravenous vasopressors, it significantly accelerated lactate clearance in patients with septic shock. Trial registration number: IRCT20100228003449N25 (Clinicaltrials.gov).


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