Mathematics teacher quality: its distribution and relationship with student achievement in Turkey

A main purpose of the present study was to investigate the distribution of qualified mathematics teachers in relation to students’ socioeconomic status (SES), as measured by parental education, among Turkish middle schools. Further, relationships between mathematics teacher quality indicators and students’ mathematics achievement were explored. Data from the 2007 Trends in International Mathematics and Science Study were used. Relationships between mathematics teacher quality and students’ mathematics achievement were investigated using hierarchical linear modeling. The current study identified SES-related inequities in access to qualified mathematics teachers in Turkey. Low-SES students were more likely to be taught by mathematics teachers who had less than 3 years of experience or who did not hold a degree in mathematics or mathematics education. On the other hand, years of experience and a degree in mathematics or mathematics education were found to be substantially related to Turkish eighth-grade students’ mathematics achievement. Low-SES students’ mathematics teachers were also more likely to report a lack of confidence in their preparation to teach various mathematics contents.     

A Regression Model With a New Tool： IDB Analyzer for Identifying Factors Predicting Mathematics Performance Using PISA 2012 Indices

There are many studies that focus on factors affecting achievement. However, there is limited research that used student characteristics indices reported by the Programme for International Student Assessment （PISA）. Therefore, this study investigated the predictive effects of student characteristics on mathematics performance of Turkish students. In PISA studies, sampling design, sampling weights, and plausible values have to be taken into consideration in order not to have biased multiple regression results. In order to conduct multiple regression analyses in PISA, software called the International Association for the Evaluation of Educational Achievement （lEA） International Database （IDB） Analyzer is required to be used because the dependent variable consists of several plausible values. This study aims to identify student characteristics that are significant in predicting mathematics performance in Turkey. Results showed that being successful in mathematics is a combination of several factors in which students＇ beliefs, motivation, and other factors must be organized to achieve mathematics. Among these beliefs and motivation, strong self-efficacy, positive self-concept, and minimum level of anxiety seem to be the key for success.     

The impact of preprocessing on text classification

Preprocessing is one of the key components in a typical text classification framework. This paper aims to extensively examine the impact of preprocessing on text classification in terms of various aspects such as classification accuracy, text domain, text language, and dimension reduction. For this purpose, all possible combinations of widely used preprocessing tasks are comparatively evaluated on two different domains, namely e-mail and news, and in two different languages, namely Turkish and English. In this way, contribution of the preprocessing tasks to classification success at various feature dimensions, possible interactions among these tasks, and also dependency of these tasks to the respective languages and domains are comprehensively assessed. Experimental analysis on benchmark datasets reveals that choosing appropriate combinations of preprocessing tasks, rather than enabling or disabling them all, may provide significant improvement on classification accuracy depending on the domain and language studied on.     

Quality of argumentation by seventh-graders in local socioscientific issues

The study's purpose was to evaluate the quality of argumentations presented by students in relation to local socioscientific issues (SSIs). The participants, 36 seventh-grade students from state schools, were divided into three learning groups—outdoor group, newspaper group, and presentation group. Five local environment-related SSIs were selected: an artificial lake, chicken coops, leather tanneries, base stations, and hydroelectric power plants (HPPs). Different data sources were provided to each group pertaining to their SSIs. The outdoor group learned through field trips, the newspaper group acquired information through newspapers, and the presentation group learned via presentations. Each group gathered data from their unique learning sources, which then formed the basis of their arguments. After a pilot study, each group experienced the same argumentation practice within smaller groups. The recorded discussions were transcribed, and the qualities of 582 argumentation episodes chronicled over a period of 10 weeks were evaluated using an analytical assessment tool. It emerged that the quality of argumentations of each group varied by the data sources and the contexts of the SSIs. While the newspaper group displayed the best performance in 4 out of 5 issues, the outdoor group had the lowest performance overall. In terms of generating high-quality argumentations about the artificial lake, chicken coops, and base stations, the newspaper group ranked top, followed by the presentation group, and then the outdoor group. HPPs proved to be the most challenging context for students across all groups. The study sums up with discussions of the differences between the quality of argumentations of the various groups and the implications of the study's conclusions.     

Behavioral treatment of a selective mute Mexican-American boy

This case study describes a selective mute Mexican-American boy who, at initial referral, had never spoken to peers or teachers while in school. The treatment procedure employed shaping and reinforcement of speech in therapy sessions. These sessions involved the psychologist alone, the classroom teacher and psychologist, the boy's best friend and the psychologist, a small assertiveness skills group, and a small group for reading instruction. Results indicated that the subject first whispered one word and then gradually expanded his vocalizations from one-word answers to complete sentences over a 3-year period. By the end of the treatment, he answered questions in a normal tone of voice but rarely asked questions. Through the use of shaping, positive reinforcement, and stimulus fading, the treatment was successful in helping the boy to speak in several settings. © 1996 John Wiley & Sons, Inc.     

Incorporating critical thinking in the pedagogical content of a teacher education programme: does it make a difference?

Recent educational policies, national reports, and voluminous literature stress that critical thinking (CT) is an essential skill in any stage of schooling for producing critical thinkers and ensuring better learning. The importance of teaching CT has been raised in teacher education programmes because students are supposed to teach this skill in schools in the future. This study therefore assesses the effects of a CT-based pedagogical course on student teachers’ content knowledge and CT disposition. A pre-test–post-test experimental study was carried out in a vocational pre-service teacher education programme in Turkey. Although the students who were exposed to CT-based instruction showed better progress in both academic achievement and CT disposition than in traditional instruction, this result was not statistically significant according to the Mixed Factorial ANOVA and ANCOVA results.     

Validity and Reliability of Turkish Version of the Balanced Index of Psychological Mindedness

The purpose of current study was to explore psychometric properties of the Turkish version of the Balanced Index of Psychological Mindedness (BIPM). Studies regarding psychological mindedness (PM) are still limited in Turkey; and there are few valid instruments to measure PM. The Turkish version of the BIPM and the 20-Item Toronto Alexithymia Scale (TAS) was administered to 654 voluntary undergraduate students. Confirmatory factor analysis indicated a good fit for the model including two subscales (interest and ability dimensions of PM) with a total of 14 items (x²/df?=?3.11, p?<?.001, RMSEA?=?0.060, S-RMR?=?0.059, GFI?=?0.95, AGFI?=?.0.93, CFI?=?0.94). McDonald’s Omega (ω) for scores on the overall scale was .85, .73 for scores on the Interest Subscale and .76 for scores on the Insight Subscale. Test–retest reliability coefficients were found as .61 for the scores on the BIPM total score, .55 for scores on the Interest subscale and .56 for scores on the Insight subscale (p?<?.01). As expected, the BIPM total scale score were negatively correlated with TAS total score (r?=?-.59).

     

Programming education in the frameworks of reverse engineering and theory of didactical situations

Education and Information Technologies - This study aims to evaluate the teaching of the programming process carried out through scenarios related to daily life within the framework of Reverse...     

The effects of constructivist learning environment on prospective mathematics teachers＇ opinions

To explore the effects of constructivist learning environment on prospective teachers＇ opinions about ＂＇mathematics, department of mathematics, discrete mathematics, countable and uncountable infinity＂ taught under the subject of Cantorian Set Theory in discrete mathematics class, 60 first-year students in the Division of Mathematics Education at the Department of Science and Mathematics in Buca Education Faculty at Dokuz Eylul University were divided into two homogenous groups. In order to do this segmentation, Minimum Requirements Identification Test was developed and used by the researchers. This test includes concepts like ＂＇set＂, ＂correlation＂ and ＂function＂, which are required to understand Cantorian Set Theory. While the control group was taught by traditional methods, a teaching method based on a constructivist approach was applied to the experimental group. Data were gathered by an open-ended questionnaire administered to total 40 students, 20 from the each group. Collected data were evaluated through content analysis. In the end, despite the minor differences, no statistically significant difference was found between the opinions of control and experimental groups about mathematics （χ^2calculation=2.578, SD=3, p〉0.05）, department of mathematics （χ^2calculation=3.185, SD=3, p〉0.05） and discrete mathematics （χ^2calculation=4.935, SD=3, p〉0.05） after the instruction. However, opinions about Cantorian Set Theory were significantly differentiated between experimental and control groups after the instruction （χ^2 calculation= 13.486, SD=2, p〈0.05）.