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A1 مهوس، رائد AB The research aims to identify the impact of strategy of collaborative learning through using practical exercises by tools to help in the development of accuracy of the two land front and rear strokes in Tennis and identify the best group by strategy of collaborative learning. The researcher used experimental method through equivalent groups the research community is identified with specialist school in the Ministry of Youth and Sports of Tennis , age (12-14) ,for the year (2011-2012) totaling (20) players .The sample has been tested by intentional method using lottery style by (12) players . Random sample is divided into two groups, each group comprising (6) players. The first group works on a strategy of cooperative learning using practical exercises helpful tools. The second group works on strategy of collaborative learning using practical exercises without helpful tools. The approach took (4) weeks by (4) and educational modules per week. After the completion of the approach, conducting a posteriori tests, data extraction and the use of appropriate statistical processors to address the results that have been presented, analyzed and discussed. In the light of these results, the researcher reached conclusions that the use of cooperative learning strategy has contributed significantly to the reduction of effort to correct errors and provide feedback on the type of error by the learners as well as the superiority of the first experimental group in the development of accuracy of the two land front and rear strokes in Tennis. Also, the most important recommendations was the need to take advantage of cooperative learning strategy and helpful tools to invest time and effort in the educational process to develop front and rear strokes in tennis. (Published abstract) http://search.shamaa.org/abstract_en.gif OP ص ص. 1-16 T1 تأثير استراتيجية التعلم التعاوني باستعمال تمرينات تطبيقية بأدوات مساعدة في تطوير دقة الضربتين الأرضيتين الأمامية والخلفية بالتنس [مقال] UL https://www.iasj.net/iasj/article/96630 النص الكامل (PDF) 1 http://search.shamaa.org/fulltext.gif