Υποβολή Διπλωματικής Εργασίας: Submission #276

Περίληψη (Αγγλική μετάφραση) The purpose of this master’s thesis is to design, implement and evaluate a Supplementary School Distance Education (SSDE) intervention for teaching the unit “Oscillations” in Physics in the third grade of Greek lower secondary school (Grade C of Gymnasium). Within this framework, interactive digital educational material was developed, based on the principles of Distance Education and Multimedia Learning, with the aim of supporting students’ self-regulated study at home and being used in a complementary way in classroom teaching.
A mixed-methods research design was adopted. Closed- and open-ended questionnaires were administered to students in the third grade of the 1st Experimental Gymnasium of Chania, as well as to teachers and experts in Distance Education, in order to investigate students’ understanding and attitudes regarding the use of the material and the extent to which the material is aligned, in terms of design and instructional approach, with the principles of Distance Education and Multimedia Learning.
The students were allocated to two statistically equivalent groups, an Experimental Group and a Control Group. Following the implementation of the material, the Experimental Group achieved higher performance in the post-test compared to the Control Group, with the difference being statistically significant, which documents the positive impact of the educational material on learning outcomes and on the understanding of the unit.
Overall, the results show that the educational material is consistent with the principles of Distance Education, makes effective use of the principles of Multimedia Learning, and contributes, in a measurable and experientially recognisable way, to a deeper understanding of oscillations. These findings suggest that it can serve as an effective supplementary teaching tool for this unit in Physics in the third grade of Greek lower secondary school and be used within a realistically applicable model of supplementary distance teaching.