This is an excellent tool for teaching children how to listen carefully and discern sounds. Each game box contains a cd rom (containing 25 different sounds) and 25 plastic image cards (5 sets of 5 cards). The image cards are visually grouped both by theme (e.g musical instruments) and colors ( e.g.each instrument image has a red frame around it). Each game has two full set of image cards, allowing two children to play simultaneously. When playing, the cd rom emits a series of sounds which the child has to match to an image cards. Before each new sound is played the child hears a bell ring. If all the cards are selected and placed in the right order, the backs of the cards combine to create another image, which gives the child visual confirmation that they have got everything right. Supplied in an easy - to-use compartmentalized and lidded beech wooden box.