وحدة إثرائية بينِية علوماتية تاريخية لتنمية الهويتين التاريخية، والعلمية، والمعرفة البينية لدى تلاميذ المرحلة الإعدادية
The research aims to find out the effectiveness of an interdisciplinary enrichment Historical scientific unit; to develop the two identities: historical, scientific, and inter-knowledge; among middle school students. To achieve this goal, the two researchers used two approaches: the descriptive and the quasi experimental with one group, and the research procedures began to arrive at a theoretical framework to search for: (the two identities: the historical and the scientific; in addition to the inter-knowledge and the interdisciplinary approach). Then the preparation of the research tools, which are: (criteria: historical identity and scientific identity), and the test: inter-knowledge, and their application to the research sample consisting of 42 students from the first year of middle school in Alexandria governorate. Using arithmetic means, percentages, T-test, correlation coefficient, and ETA square; Several results of the research were reached, the most important of which were: (That the interdisciplinary enrichment unit Historical scientific is effective in developing the two identities: the historical, the scientific, and the inter-knowledge among the first-grade middle school students; then a set of recommendations and the proposed research were reached. (Published abstract)