Indigenous Australian children learn't how to track thru their elders teaching about the tracks that the animals make in the sand.  When the young children first learnt how to walk they also learnt about their own footprints and the footprints their mothers made when walking thru the bush and sand,  from there they would go onto more complex tracking skills such animal and reptile tracks and how to judge if the tracks were fresh or old.  Symbols drawn in the sand showing these animals tracks are now painted on canvas.  Many paintings reflect the lessons learnt from very young children, although a lot of the information is still sacred and secret is only available to those initiated.