فاعلية وحدة مقترحة قائمة على استراتيجية التخيل الموجه في تنمية المعرفة ببعض مفاهيم و تطبيقات و أخطار النانو تكنولوجي لدى طلاب المرحلة الثانوية من خلال مادة الأحياء

الملخص EN

The current study tried to recognize the effectiveness of a proposed guided imagery strategy based unit in developing the knowledge of some concepts, applications & dangers of nanotechnology for secondary stage students through biology subject, so a quasi-experimental approach (one group design with pre-post measuring), committed throgh next procedures: preparing lists of some concepts, applications, and dangers of nanotechnology that we can develop the secondary stage students knowledge of them through biology subject- designing a guided imagery strategy based unit for developing knowledge of some nanotechnology concepts, applications, and dangers of first year secondary stage students through biology subject & its teacher guide- preparing tests for the availability of knowledge at some nanotechnology concepts, applications and dangers among first year secondary stage students through biology subject- choose the study group randomly among the first year secondary stage students science specialty- apply the study experience, the results indicated the effectiveness of the proposed guided imagery strategy based unit in developing knowledge of some concepts, applications and dangers of nanotechnology In the first year secondary stage students through biology subject, the differences between the pre and post performance of the study group on each test were statistically significant at the level of 0.01, with a large size effect.