http://www.almotamar.net صحيفة إلكترونية يومية تصدر عن حزب المؤتمر الشعبي العام (اليمن) http://www.almotamar.net/2062.htm 2007-02-23 A Yemeni teacher at Al-Nour Center for the Blind in the capital Sana'a has created a magnetic blackboard for teaching the subject of mathematics for the blind. It comes in the second place with regard to the scientific significance after the method of Brail for teaching the blind reading and writing.