تصميمان للدعم متعدد المصادر (محدد المصدر، غير محدد) ببيئة تعلم إلكتروني وفاعليتهما في تنمية مهارات البرمجة لدى تلاميذ المرحلة الإعدادية
The aim of the present research is to reveal the most suitable design of multi-source support (source-specific, unspecified) in an e-learning environment to develop programming skills of preparatory stage pupils. To achieve this goal, the researcher has developed a list of criteria for designing the e-learning environment with two designs of multi-source support (source-specific, unspecified). The researcher has applied Mohammed Khamis ISD model (2007) to develop the e-learning environment. The research sample consisted of (72) students, divided into two experimental groups, each group consisted of (36) students. The experimental design known as the design of the two experimental groups was used with pre- and post- measurement. The research experiment was carried out and statistical processing methods was applied using SPSS program. The results of the research indicated that there is a significant difference between the two designs of multi-source support (source specific, unspecified) on developing the cognitive achievement of programming skills. The effectiveness of the two designs was verified by Blake modified gain ratio. The thesis report includes appendices, recommendations, suggestions of future researches, and references. The research recommended using multiple unspecified source support in the e-learning environment when developing programming skills of preparatory stage pupils. (Author’s abstract)