AU - البدري، فائدة ياسين طه AB - Aim of the research to identify the impact of fish bone in the collection and retention of mathematics in the second grade student’s average) strategy, and selected medium survive for girls in the district of Samarra, randomly and in which there are four people of the second grade average. The two divisions were chosen at random, the first experimental group was taught the strategy of the fish bone and the other officer studied the usual way. After the exclusion of some students Alraspat statistically from the two groups and their number five students to become in each group (33 students), was parity between the two groups in the variables (chronological age in months, the previous achievement in mathematics, the degree of intelligence, the educational level of the parents). Achievement test has been prepared in accordance with the three levels of Bloom's first for the purposes of behavioral component (30) a substantive paragraph of the multiple choice type has been checked and fixed his sincerity as well as (coefficient of difficulty, discriminatory power, the effectiveness of the erroneous) alternatives to its paragraphs. And after the experiment finished achievement test on the two sets of applied research, then the same achievement test dish again after three weeks of its application first in order to verify the retention of information, and using samples t test for two independent samples and equal, it resulted in the results outweigh the experimental group to the control group in the achievement test in retention. In light of the search results formulated a number of conclusions and based on the findings and conclusions have been reached some of the recommendations and to complement the current research suggested a number of studies. (Published Abstract) http://search.shamaa.org/abstract_en.gif OP - ص ص. 211-238 T1 - أثر استراتيجية عظم السمكة في التحصيل والاستبقاء في مادة الرياضيات لدى طالبات الصف الثاني متوسط [مقال] UL - https://www.iasj.net/iasj/article/127930 النص الكامل (PDF) 1 http://search.shamaa.org/fulltext.gif