Mathematical mosaicMathematical warm-up Perepilyukova Inna Alekseevna mathematics teacher at MBOU Secondary School No. 24 in Krasnodar V... 0 2k 0 January 4, 2012
Mathematical mosaicMathematical computer game Irina Kurkovskaya Game about a girl who accidentally found a treasure map... 0 4k 0 August 7, 2011