Υποβολή Διπλωματικής Εργασίας: Submission #267

Περίληψη (Αγγλική μετάφραση) This master's thesis addresses the design, development, implementation, and evaluation of a comprehensive interactive educational material (EM), within the framework of a supplementary school distance education (DE) intervention, focusing on the teaching of positive and negative (rational) numbers to first-grade lower secondary school (Gymnasium) students. The EM constitutes the core of the intervention and was designed to support the learning process by leveraging the principles of DE, the potential of ICT, and the pedagogical demands of the specific subject matter. At the same time, the study explores the application of the supplementary DE methodology in the context of mathematics education and, more specifically, within this particular thematic field.
The educational material was developed based on Mayer’s Cognitive Theory of Multimedia Learning and the Instructional Design Model proposed by West and Lionarakis, while integrating modern teaching approaches and models for the instruction of rational numbers. Its implementation was carried out using the H5P digital tool and it was hosted on the e-learning platform of the E.DI.V.E.A. Laboratory at the University of Crete.
The evaluation of the intervention was based on two distinct research processes: the assessment of the EM by DE experts and its application by first-grade lower secondary students. Open-ended questionnaires were used for the experts, while pre- and post-questionnaires, conducted through structured interviews, were used for the students.
The results indicated that the EM effectively applies the principles of DE and multimedia learning, and contributes positively to students’ understanding of key concepts and operations involving rational numbers. Students evaluated the material as user-friendly, comprehensible, and engaging, and their attitude toward learning through DE was generally positive.