“…In addition to the language proficiency, the choice of the language of instruction showed an effect on the students' performance in math and science (Strevens, 1991;Za'rour & Nashif, 1977;Gorgorio & Planas, 2001). Several studies addressed the role of receiving instruction in the students' first language in engaging them in the learning process and allowing them to better perform in math and science over students studying in the second language (Bunyi, 1999;Collison, 1975;Ehindero, 1980;Seliji, 2003;Gfeller & Robinson, 1998). Other studies showed positive results as a result of using the second language for instruction in a medium where the proficiency of languages, the first and the second language existed (Bankston & Zhou, 1995;Cummins and Gulutsan, 1974;Hakuta & Diaz, 1985, Lambert, 1990Swain and Lampkin, 1982;.…”