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B. Research Setting
In order to achieve its objective which was to design English speaking instructional materials for hearing impaired students, the research was conducted
in SLB Wiyata Dharma I which was located in Jalan Magelang Km. 17 Margorejo Tempel Sleman 55552. It consisted of observation of the seventh grade classroom
activities and interview of the seventh grade hearing impaired students and their English teacher. The observation was carried out on April 14, May 5, and May 19,
2011. Then, the interview of the students was done on May 21, May 23, and May 26, 2011 while the interview of the English teacher was done on May 14, 2011.
C. Research Participants
Participants were needed to bring evidence to support the validity of this research. In this research, the participants were divided into two groups as
follows.
1. Participants in research and information gathering
The participants in this step were the seventh grade hearing impaired students and the English teacher of SLB Wiyata Dharma I. These
students were chosen as the participants because they were able to give information for the research on how the English speaking instructional
materials should be developed as what they wanted. Moreover, their being chosen was also due to their limited experiences in learning English since
there were only limited special schools giving English learning to such students with special needs as them. Meanwhile, the English teacher in this
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school was chosen as the participant as well since she was the closest person among the students who exactly knew the uniqueness of each student.
Therefore, she was the appropriate person who could give information about what became the students‟ potentials and weaknesses and what the students
actually needed the most, which could support the development of the English speaking instructional materials.
2. Participants in product verification
The participants in this step were the English teacher of the seventh grade hearing impaired students of SLB Wiyata Dharma I and the
English lecturers in the area of Language Education having graduate degree
S2, majoring English Language Teaching, and teaching Instructional Design. The English teacher was chosen because she was the one who got the
direct impacts of the developed English speaking instructional materials when applying the materials to the seventh grade hearing impaired students.
Therefore, she was able to tell which parts of the English instructional materials to be maintained and to be improved. Meanwhile, the English
lecturers with the mentioned criteria were also chosen because they were considered as experts in the field of instructional materials development for
certain level of learners. Therefore, they could give feedback on the English speaking instructional materials for the seventh grade hearing impaired
students of SLB Wiyata Dharma I designed in this research.
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D. Instruments and Data Gathering Technique
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