Black and white silent ocean map

The mute or spoken oceans map in black and white is useful to make the game with the oceans joint autonomous, the map, in fact, can be placed under the puzzle to give the possibility to play autonomously, correct and verify the position of all the oceans. The map is plastic-coated and can be "silent" to check only the position of the oceans or "spoken", the latter also indicating the name of the oceans. The control map is useful for discovering and learning about geography and for self-checking.