The stages of balance acquisition in children
Children under the age of 4 must learn how to control their body and move in any given direction by slowly waddling forward on 2 feet.
At age 4, children can walk with one foot in front of the other on a beam that is one and half times the size of their feet.
From age 6, children can walk with one foot in front of the other, heel to toe, on a path as wide as their foot.