science 15.17 les conseils choufi lazam ta9ray bi1 me nlouwal w matkhalich 7adja w matafhmihach 2 7oti rassak f lclassa surtt doross w les cours khalihoum l tamarine brk 3 7awli ta7akmi eythme men louwam ex tassahri 7ata l 12 ta3 lil w tnodhi 3la 6h dba7 koul youm w kamli w idha lgiti ro7ak machi la7ga zidi chwi...............wlba9i choufi nti w 9odoratak salem