Öğrenci Görüşleriyle Akran Değerlendirme: Bir Örnek Uygulama

In this study, a special peer assessment technique was applied for 5th grade students in relation to the unit “Electricity in our life” in the Science and Technology course. According to this activity, it was aimed to determine the views of students associated with peer assessment. It was also aimed to study the reflection of students’ success which they acquired as a result of peer assessment. In addition, the views of a science teacher and a class teacher who participated as observers were received. The research design is based on the method of qualitative research. The pattern of research is a case study. 30 students at the 5th grade of primary school in the district Selcuklu form the sample group of the research. The self-structured interview method was used to get students’ view and the unstructured interview method was used to receive teachers’ opinions. It was established that students have positive thoughts about peer assessment. Based on the result of peer assessment, it is possible to claim that successful groups have more positive thoughts than others.Bu araştırmada, ilköğretim 5. sınıf öğrencilerine Fen ve Teknoloji dersi “Yaşamımızdaki Elektrik” ünitesine yönelik örnek bir akran değerlendirme etkinliği yaptırılmıştır. Bu ders etkinliğinden yola çıkarak öğrencilerin akran değerlendirmesine yönelik görüşlerinin belirlenmesi ve öğrencilerin akran değerlendirme sonucu edindikleri başarı derecelerinin görüşlerine yansıma durumunun araştırılması amaçlanmıştır. Ayrıca etkinliğin uygulanması esnasında gözlemci olarak katılan bir fen ve teknoloji ve bir sınıf öğretmeninin de akran değerlendirmeye yönelik görüşleri alınmıştır. Araştırmanın veri toplama, örneklem seçimi ve veri analizi basamaklarının tümü nitel araştırma yöntemiyle tasarlanmıştır. Araştırmanın deseni; durum (örnek olay) çalışmasıdır. Araştırmanın örneklemi; amaçlı örnekleme yöntemlerinden kolay ulaşılabilir örneklem tekniğiyle seçilmiştir. Konya ili Selçuklu ilçesinde ilköğretim 5. sınıfa devam eden 30 öğrenci araştırmanın örneklem grubunu oluşturmaktadır. Öğrencilerin görüşlerine yönelik verilerin toplanmasında yarı yapılandırılmış, öğretmenlerin görüşlerinin alınmasında ise yapılandırılmamış görüşme yöntemi kullanılmıştır. Araştırmanın çalışma grubunda yer alan ilköğretim 5. sınıf öğrencileri akran değerlendirmesine yönelik olumlu görüşlere sahiptir. Akran değerlendirmesi sonucu başarılı olan gruplar, diğerlerinden daha olumlu görüşlere sahip olmuştu

Tasarım Temelli Fen Eğitimine Yönelik Öğrenci ve Öğretmen Değerlendirmeleri

Bu araştırmada “Tasarım Temelli Fen Eğitimi” (TTFE) esas alınarak hazırlanan “Isı Yalıtımı Ülke Kazanımı” etkinliğine yönelik öğrenci değerlendirmelerinin ve uygulamayı yapan fen bilimleri öğretmeninin uygulama deneyimine yönelik görüşlerinin tespit edilmesi amaçlanmıştır. Araştırmanın modeli bütüncül tek durum çalışmasıdır. Araştırmanın çalışma grubunu altıncı sınıfta öğrenim gören 32 öğrenci ve 1 öğretmen oluşturmaktadır. Araştırmanın, öğrenci değerlendirmelerine yönelik verileri anket (TTFE Öğrenci Değerlendirmeleri Anketi) ve odak grup görüşme ile toplanmış, betimsel analiz (anket) ve içerik analizi (odak grup görüşme) ile çözümlenmiştir. Öğretmen görüşleri ile ilgili veriler ise yapılandırılmamış görüşme ile toplanmış, betimsel analiz ile çözümlenmiştir. Öğrenciler TTFE sürecini fen içeriğini öğrenmeyi sağlayıcı, günlük yaşam ile ilişkili, ilgi çekici ve motive edici olarak değerlendirmiştir. Uygulama öğretmeni de TTFE sürecini gerçek yaşama hazırlayıcı, mühendislik tasarım sürecini fark etmelerini destekleyici ve öğrenmeye motive edici yönüyle olumlu olarak değerlendirmiştir. TTFE esas alınarak hazırlanan “Isı Yalıtımı Ülke Kazanımı” etkinliği fen derslerinde STEM eğitimini gerçekleştirmek isteyen öğretmenler için alternatif öneri olabilir

Can Biomimetic Zinc Compounds Assist a (3 + 2) Cycloaddition Reaction? A Theoretical Perspective

Compounds bearing tetrazole rings are valuable facets in numerous branches of chemistry including metabolic imaging and the production of drugs and high-energy materials. Synthesis of tetrazoles with the help of organocatalysts has intensively been explored, while enzyme-directed click chemistry has attracted less attention and was only used in inhibitor design so far. Herein, we have investigated the possibility of a biomimetic catalyst based on a Lewis acid approach by exploring the anionic cycloaddition of azide and acetonitrile catalyzed by ZnBr2 in comparison with different biomimetic Zn(II) models. Density functional based calculations in the gas phase and with implicit solvation indicate that a variety of bioinspired zinc complexes should be able to catalyze tetrazole formation with catalytic enhancements comparable to zinc bromide salts. Such bioinspired routes could provide new possibilities for the stereo- and regioselectively controlled synthesis of tetrazoles

A Proposal of the STEM Education for Teacher Training: Design Based Science Education

Bu araştırmada FeTeMM eğitim yaklaşımını fen sınıflarına yansıtabilmek amacıyla önerilen Tasarım Temelli Fen Eğitimi ile planlanan bir sürecin hizmet öncesi fen öğretmenlerinin eğitiminde uygulanması ve öğretmen adaylarının sürece yönelik değerlendirmelerinin tespit edilmesi amaçlanmaktadır. Durum çalışması desenindeki araştırmanın çalışma grubunu amaçlı örneklem seçme yöntemi ile belirlenen 6 fen bilimleri öğretmen adayı oluşturmaktadır. Tasarım temelli fen eğitimi uygulamalarının ortasında ve sonunda olmak üzere iki kez gerçekleştirilen yarı yapılandırılmış görüşmeler ile toplanan veriler, içerik analizi, betimsel analiz ve sürekli karşılaştırmalı analiz teknikleri bir arada kullanılarak analiz edilmiştir. Araştırmada öğretmen adaylarının mühendislik tasarım sürecinin en güçlü yönlerini yaparak öğrenmeyi sağlaması, büyük tasarım görevi hedefinin motive edici olması, kalıcı öğrenmeyi sağlaması ve sorgulamaya dayalı olması gibi özellikleriyle değerlendirdikleri tespit edilmiştir.This study primarily aims to investigate the pre-service science teachers' assessment on Design Based Science Education process. Thus, in order to reflect the Approach of the STEM education in science class Design Based Science Education implementation is conducted for pre-service science teachers. The "single embedded case study design" which is one of the case study patterns, used in this research. The study group is determined according to the intentional sample selection method which constitutes of 6 pre-service science teachers. The research data which were collected in the middle and at the end of the design based learning process, were carried out twice with the semi-structured interviews. Content analysis, descriptive analysis and, constant comparative analysis were performed together for data analysis. In the research, it is found that pre-service science teachers assess the most powerful dimensions of this process as; it enhances the learning by doing , the goal of major design task is motivating, it leads permanent learning, and it is based on questioning

Socio-Scientific Issues as a Context for STEM Education: A Case Study Research with Pre-Service Science Teachers

This study was designed as a case study. Participants were 12 senior pre-service science teachers (PSTs), who took theoretical and practical courses about STEM education and socio-scientific issues (SSIs) during their education at a state university. For the study, in the first 4 weeks, theoretical courses on SSIs and STEM education were carried out. Afterwards, PSTs were asked to choose a SSI and configure this issue as a problem statement to perform a STEM activity. Participants were given a total of 3 weeks to determine the issue and prepare the STEM activity, and the researchers of the study gave systematic feedback during this period. Then, starting from the fifth week of the study, groups started to implement their STEM activities in the class, where their peers were assigned as their students. The activity plans they prepare, the field notes taken by the researchers during the implementation of the activities and the semi-structured interviews about the opinions of the PSTs on the use of SSI in STEM education were the data sources of the study. Findings revealed that PSTs found establishing STEM problem situations over SSIs suitable since they provide features such as conformity to real life, having multiple criteria and providing compatibility with other disciplines. Moreover, after their practices, they pointed out that the activities enabled both the teaching of the SSI and the integrated teaching to be carried out. As a conclusion, it is recommended to use socio-scientific problem situations to perform STEM education

Erythrocyte Sedimentation Rate May Predict Diagnosis of Lymphoma Without Fine-needle Aspiration Biopsy: A Retrospective Study

Objective:To assess the relationship between routine blood values recorded before fine-needle aspiration biopsy (FNAB) and final diagnosis in patients whose diagnoses could not be confirmed with FNAB, necessitating surgical excisional biopsy (SEB) as a second invasive procedure.Method:The data of patients who could not be diagnosed via FNAB and who underwent SEB of the cervical lymph node between March 2014 and March 2019 in the otolaryngology department of a research hospital were evaluated retrospectively. According to the definitive diagnosis determined by SEB, the cases were divided into 3 groups as follows: 1) benign, 2) other malignancies, 3) lymphoma.Results:The frequency of males in the other malignancies group was significantly higher compared to the other two groups (p=0.007). Compared to the other two groups, C-reactive protein levels were statistically significantly lower in the benign group (p=0.001). Erythrocyte sedimentation rate (ESR) in the lymphoma group was significantly higher than in the other groups (p35.5 mm/hr (area under the curve= 0.784, 95% confidence interval: 0.708-0.861, p<0.001).Conclusion:Although ESR is non-specific for the diagnosis of lymphoma in asymptomatic patients, it may be a supportive marker to reduce repetitive invasive procedures in symptomatic patients who may require cervical lymph node biopsy for diagnosis

Effect of Using Earmuffs on Physiological Parameters and Stress Levels of Premature Infants: A Randomised Controlled Trial

Background: Earmuffs can be worn to reduce the noise exposure of premature infants. The results regarding the use of earmuffs to provide physiological stability and reduce the stress level in preterm infants are not precise.The present study aims to examine the effect of providing noise control using ear muffs on premature infants’ physiological parameters and stress levels in the neonatal intensive care unit.Methods: A prospective randomised trial was conducted including 100 premature infants for a one-year-period. After randomisation, the infants included in the study were evaluated for two consecutive days and checked twice a day for a total of four times. The infants in the study group wore earmuffs twice a day, in the supine and prone positions. The infants in the control group were followed up without earmuffs.Results: There was a statistically significant difference between the post-procedural stress scores of the study and control groups (p<0.05). The stress scores of the infants in the study group were significantly lower than those in the control group. Two hours after wearing earmuffs on the first and second days, a statistically significant difference was found between the respiratory rates of the two groups, being significantly lower in the study group (p=0,030).Conclusion: According to the results of our study, using earmuffs in premature infants decreased the stress score and respiratory rate; however, this intervention did not affect other physiological parameters

INVESTIGATION OF PROSPECTIVE SCIENCE TEACHERS' ATTITUDES TOWARDS COMPUTERS IN TERMS OF DIFFERENT VARIABLES

The purpose of this study is to investigate prospective science teachers' attitudes towards computers in terms of gender, general academic achievement and grade level. This is a descriptive field survey. The study group of the research comprised of totally 226 students attending the Science Teaching Department of Education Faculty, Kırşehir Ahi Evran University. "Attitude Scale towards Computers" and "Demographic Information Form" were used as data collection tools. In the analysis of the data, descriptive statistics, independent t-test, one-way ANOVA and Pearson correlation coefficient were used. At the end of the study, teachers' attitudes towards computers were determined as in medium level. On the other hand, it was found out that prospective teachers' points of attitudes towards computers differed significantly according to gender and grade level. In addition, it was determined that the teachers' points of attitudes towards computers didn't differ significantly according to general academic achievement. It was revealed that there were high and medium-level positive relationships between prospective teachers' points of attitudes towards computers and gender, grade level and academic achievement