بررسي تحول مفهوم فضاي اقليدسي در دانش آموزان ناشنوا و شنوا

The investigation of the Development of the concept of Euclidian space among Deaf and Hearing students.

The goal of the present research was the investigation of the development of the concept of Euclidian space in deaf studentsexamined. The subjects of the examination included two groups of deaf students (25 boys and 25 girls) and two groups of hearing students (25 boys and 25 girls). The evaluation device in this research was the test of the visualization of the horizontal surface of water. In order to analyze the data, the tests of croscal-wallice and Uman-wittny were used. The results from findings, demonstrated the lake of difference between deaf and hearing students in the development of the concept of Euclidian space. However, the deaf boys had a better performance in the test of the visualization of the horizontal surface of water in comparison with the deaf girls. Also, the results represented the fact that none of the four groups (deaf and hearing boys and girls) has acquired the full concept of the Euclidian space, and the performance of the deaf girls in the test of the visualization of the horizontal surface of water was the weakest among the four groups.