pattern can be seen in the first steps the child takes with the hand (圖1-21).
parents who walk children from behind with tow hand helds are in the bets
position to observe this diagonal stepping pattern,which leads the child first
to one side and then to the other. only with time do leg movemrnts correct to
a more forward direction.the child progresses from walking with tow hands
held to walking with just one hand for support.with encouragement,the child
lets go eventually and step out alone. the first independent steps are also
diagonal in nature,leading to a wide base of support.