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المحتوى الرئيسي
Vi and Sal Explore How We Think About Scale http://www.khanacademy.org/video/vi-and-sal-explore-how-we-think-about-scale -------------------------------------------------------------- يتناول هذا الفيديو توضيحا لكيف يمكننا ان نفكر بخط الاعداد -------------------------------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org