فاعلية برنامج لتدريس العلوم قائم على استراتيجية الاستقصاء بالسقالة في التحصيل المعرفي وتنمية مهارات التفكير المنظومي والقيم العلمية لدى تلاميذ المرحلة الإعدادية
The current research aims at identifying the effectiveness of a program for teaching science based on scaffolding inquiry strategy in cognitive achievement and developing systemic thinking skills and scientific values of preparatory stage students. The sample of the research includes eighty – five students in preparatory third grades from preparatory school; students are divided into two groups; experimental group (n=44) and controlled group (n=41). The researcher uses the descriptive methodology in preparing the theoretical framework for the research and preparing the tools of the study (cognitive achievement test, systemic thinking skills scale and scientific values scale), and analyzing and discussing of the results. The experimental methodology is used in the field part which represented in the two homogeneous groups' experimental design. The results showed the effectiveness of a program for teaching science based on scaffolding inquiry strategy on: cognitive achievement and developing systemic thinking skills and scientific values except neutrality, and self-criticism (Blake's modified gained ratio was acceptable) and recalling level (effect size was verage). In light of these results, the research presented a set of recommendations and suggestions. (Published abstract)