Ibishashara by'ibishashara bya chalk bisanzwe bikoreshwa mugushushanya imbere.Mubisanzwe, ni ubunini bugari hamwe nigikoresho cyihariye cyamasaha yikirahure.Zishobora gukoreshwa n’ibishashara, irangi rishingiye ku mazi, irangi rishingiye ku mavuta, amarangi hamwe n’irangi risukuye, kandi biratunganye ahantu hato, imitako n'ibikoresho.
• Igiti kirekire
• Ibyuma bitagira umwanda
• Yapakishijwe amaboko yo gukingira