Σκοπός της εργασίας ήταν η διερεύνηση των δυσκολιών που αντιμετώπισαν οι μεταπτυχιακοί φοιτητές του ΕΑΠ κατά την εκπόνηση της διπλωματικής τους εργασίας και συγκεκριμένα οι μεταπτυχιακοί φοιτητές/τριες της ενότητας ΕΚΠ65. Στην έρευνα συμμετείχαν 18 μεταπτυχιακοί φοιτητές/τριες της ενότητας ΕΚΠ65,οι οποίοι εκπονούσαν την εργασία τους κατά το ακαδημαικό έτος 2010-11. Πρόκειται για μια ποιοτική προσέγγιση στην οποία χρησιμοποιήθηκε ως ερευνητικό εργαλείο η μη δομημένη συνέντευξη με ερωτήσεις ανοιχτού τύπου. Τα αποτελέσματα έδειξαν πως οι φοιτητές/τριες συνάντησαν μια πληθώρα δυσκολιών/εμποδίων με πιο χαρακτηριστικά τα ακόλουθα: επαγγελματικές και οικογενειακές υποχρεώσεις, περιορισμένος διαθέσιμος χρόνος, προβλήματα υγείας, δυσκολία εξεύρεσης βιβλιογραφίας, δυσκολίες στην μεθοδολογία-συγγραφή έρευνας, στην επιλογή και διατύπωση θέματος, προβλήματα στην επικοινωνία με τον επιβλέποντα καθηγητή,δυσκολίες στην στατιστική επεξεργασία δεδομένων, μεγάλος όγκος βιβλιογραφίας, γεωγραφική απομάκρυνση-απόσταση απο βιβλιοθήκες, ψυχολογικοί παράγοντες, όπως το άγχος και τέλος, προσωπικοί λόγοι-γάμος. / The purpose of this paper is the definition of the difficulties that are faced by the EKP65 unit's postgraduate students of the Hellenic Open University, while they prepared their Master thesis. Eighteen postgraduate students participated in the research in the academic year 2010-11. It is a qualitative approach, in which semi-structured interview and open questions were used. The results of this research revealed that the students faced an amoumt of difficulties and obstacles. The most frequently spotted were: proffesional and family obligations, lack of time, helth problems, finding topic, problems in the bibliography research, difficulties in the writing process, communication issues with thw surervisor, statistical analysis of their data, many reading obligations, geografical distance from the libraries, psychological parametres.like anxiety and personal reasons-marriage.

>Magister Scientiae - MSc / Students frequently leave first-year physical science classes with a dual set of physical laws in mind- the equations to be applied to qualitative problems and the entrenched set of concepts, many erroneous, to be applied to qualitative, descriptive, or explanatory problems. It is in this sense that the emphasis of this study is on ‘change’ rather than acquisition. Thus, a blend of theoretical framework was considered according to the aim of the study. Of immediate relevance in this regard within the “constructivist paradigm” are: Posner, Strike, Hewson and Gertzog’s (1982) conceptual change theory and the revised Bloom’s Taxonomy. Moreover, the very shift or restructuring of existing knowledge, concepts or schemata is what distinguishes conceptual change from other types of learning, and provides students with a more fruitful conceptual framework to solve problems, explain phenomena, and function in the world (Biemans & Simons, 1999; Davis, 2011). A quasi-experimental design was adopted to explore pre-service teachers’ conceptual and procedural difficulties in solving mathematical problems in physical science. Sixteen second and third year pre-service teachers in one of the historically black universities in the Western Cape, South Africa, participated in the study. Two inseparable concepts of basic mechanics, work-energy concepts were taught and used for data collection. Data were collected using questionnaires, Physical Science Achievement Test (PSAT), Multiple Reflective Questions (MRQ) and an interview. An explicit problem solving strategy (IDEAL strategy versus maths-in-science instructional model) was taught in the intervention sessions for duration of three weeks to the experimental group (E-group). IDEAL strategy placed emphasis on drill and practice heuristics that helped the pre-service teachers’ (E-group) understanding of problem-solving. Reinforcing heuristics of this IDEAL strategy include breaking a complex problem into sub-problems. Defining and representing problem (e.g. devising a plan-using Free-Body-Diagram) was part of the exploring possible strategies of the IDEAL. More details on IDEAL strategy are discussed in Chapter 3. The same work-energy concepts were taught to the control group (C-group) using lecture-demonstration method. A technique (i.e. revised taxonomy table for knowledge and cognitive process dimension) was used to categorize and analyse the level of difficulties for each item tested (e.g. D1 = minor difficulty, D2 = major difficulty, and D3 = atypical difficulty

>Magister Scientiae - MSc / Students frequently leave first-year physical science classes with a dual set of physical laws in mind- the equations to be applied to qualitative problems and the entrenched set of concepts, many erroneous, to be applied to qualitative, descriptive, or explanatory problems. It is in this sense that the emphasis of this study is on ‘change’ rather than acquisition. Thus, a blend of theoretical framework was considered according to the aim of the study. Of immediate relevance in this regard within the “constructivist paradigm” are: Posner, Strike, Hewson and Gertzog’s (1982) conceptual change theory and the revised Bloom’s Taxonomy. Moreover, the very shift or restructuring of existing knowledge, concepts or schemata is what distinguishes conceptual change from other types of learning, and provides students with a more fruitful conceptual framework to solve problems, explain phenomena, and function in the world (Biemans & Simons, 1999; Davis, 2011). A quasi-experimental design was adopted to explore pre-service teachers’ conceptual and procedural difficulties in solving mathematical problems in physical science. Sixteen second and third year pre-service teachers in one of the historically black universities in the Western Cape, South Africa, participated in the study. Two inseparable concepts of basic mechanics, work-energy concepts were taught and used for data collection. Data were collected using questionnaires, Physical Science Achievement Test (PSAT), Multiple Reflective Questions (MRQ) and an interview. An explicit problem solving strategy (IDEAL strategy versus maths-in-science instructional model) was taught in the intervention sessions for duration of three weeks to the experimental group (E-group). IDEAL strategy placed emphasis on drill and practice heuristics that helped the pre-service teachers’ (E-group) understanding of problem-solving. Reinforcing heuristics of this IDEAL strategy include breaking a complex problem into sub-problems. Defining and representing problem (e.g. devising a plan-using Free-Body-Diagram) was part of the exploring possible strategies of the IDEAL. More details on IDEAL strategy are discussed in Chapter 3. The same work-energy concepts were taught to the control group (C-group) using lecture-demonstration method