AU - العبادي، مرتضى حميد شلاكة AB - The purpose of the study is to investigate the effect of the constructivist model of Yager in acquiring the geographical concepts among first intermediate students in geography. The study was carried on based on the null hypothesis, which states, there is no significant difference at the level of (0.05) between the experimental group that follows Yager model in learning the principles of geography, and the control group that studies the same subject considering the traditional methods of learning, the. To do so, a sample of (70) first-intermediate student were chosen purposefully from two random class for the academic year (2016-2017) divided into two groups. The selected schools located at Al-Rusafa side in the city of Baghdad, as well as, the researcher chose parts of the geography book for that year to be taught upon conducting this study. As for tools that used to collect the needed data, the researcher developed (45) behavioral aims spread over the first three levels of the acquisition process (identification, differentiation, and application). Additionally, the researcher designed thirty teaching plans, fifteen plans for each group. Post-test of (45) items were also designed to measure the level of acquisition of the geographical concepts. To analyze the collected data, SPSS software tools were utilized such as independent sample t-test and alpha Cronbach. The findings revealed there is a significant statistical difference between the experimental and control group. (Published Abstract) OP - ص ص. 323-352 T1 - أثر أنموذج ياكر البنائي في اكتساب المفاهيم الجغرافية لدى طلاب الصف الأول المتوسط في مادة الجغرافية [مقال] UL - النص الكامل (PDF) 1