When the teddy bears were out walking round the shops recently in their local town, they were talking about how to find their way around. They've visited their local town many times, of course, so they always know where they are. But what would happen if they were in a strange town and didn't know their way around?
If they had a town map, it would be relatively easy.
But Tommy wanted to know what would happen if they were out in the countryside where there were no streets. In that case, they might be able to see some features on the ground that matched the features on the map and then move the map around until they matched up - a bit like using the town map.