Post a large world map on the bulletin board. Obtain flags or pictures of flags from various countries around the world. If using pictures, have them mounted on thick paper and then laminated. Punch holes in the top of the laminated flag. Place push pins around the edges of the bulletin board. Students can place the pins on the map on the country name and attach a string from this pin to another pin on the outside of the board. They then will hang the flag of that country over the corresponding push pin.