Africa , African , Africans , Al , CDREF00091 , Education , Eritrea , Eritrean , Eritreans , Muslim , Muslims , Nesur , Pictures , Schoolchildren , Still , Tessennee , Third , World , blackboard , blackboards , chalk , children , class , classroom , classrooms , countries , developing , educate , educating , female , females , girl , girls , horizontal , horizontals , interior , kids , learn , learning , mathematics , maths , ow_schytte , pmscinternational , school , schools , secondary , sums , teach , teacher , teachers , teaching , woman , women , write , writing , x2xSP