How to discipline a preschooler

My son 3.5 years of age, quite active and intelligent but lately he is being rude and aggressive at times. Hit and bite his younger sister (1.5 years) He loves her as well. If someone else say something against her, he stands up for her]. At times behave rude with parents as well as others especially when surrounded by some people.
Yells so that his wish be granted as soon as he express his wish.
I have tried different options but it is not working and I am worried as he will be going to school after summer vacations. so can anyone give some practical tips to improve his behavior. pls help.

Re: How to discipline a preschooler

Have you tried time outs and taking away privileges when he misbehaves and hits/bites?
When he starts misbehaving or throwing the tanturm, you must remove him from there, take him to his room or a quiet place and give him a time-out for 3-4 minutes or say stay here until you have calmed down. Tell him firmly that this behavior is not acceptable and makes mommy sad. Also try taking away his favorite toy and let him cry in his room, or don't let him watch his favorite cartoon, reinforcing that its because he was hitting/biting.

When he starts yelling, thats the time you should NOT give him what he wants..... as he will continue doing so..... just remove him from there. e.g. If you're out shopping and he wants a toy, starts yelling... just leave that area, tell him firmly that if he yells he will not get it and then go home. Time waste hota hai honay do, just take him home.... after you do it a couple of times, he will not yell again since he will know that yelling doesn't work on you anymore.

They key here is consistency.... don't send mixed signals. If you tell him you'll do something, do it.... don't give in if he cries. Be consistent with whatever method of discipline you select.

Re: How to discipline a preschooler

^I like!