https://psv.europole.org/in/%d0%b8%d0%b3%d1%80%d0%be%d0%b2%d0%bd%d0%b8-%d0%b0%d0%ba%d1%82%d0%b8%d0%b2%d0%bd%d0%be%d1%81%d1%82%d0%b8-%d0%bf%d0%be-%d0%bc%d0%b0%d1%82%d0%b5%d0%bc%d0%b0%d1%82%d0%b8%d0%ba%d0%b0-%d0%b7%d0%b0-i-o%d0%b4/
Игровни активности по математика за I oдд.