Raising Three year old Daughter

I and my wife are learning a lot of lessons while raising our children. We have done lots of experiments and found them successful.
for example: being practical with children: if we remain practically playful to children they understand better. and if tr to tell them by logic they just do not understand at all. and when it snowballs into a child just keep on harping the same thing then wither we scold them or even sometimes give them a our piece of mind.
example: kid is harping on to open a box (which can not be opened). We have to just swing in action and dramatically demonstrate them oh its not opening up baby. you give a try... then they get satisfied.
Still of they are insisting the same thing then this situation is called a deadlock ....the we have to introduce something different hmmm... just switch on the TV, suddenly take them to Market, take them to Park or to any of their's friend's home. This saves the situation from being angry leads to a very peaceful situation.