An undeveloped impulse control make children this age prime candidates for getting physical, they also have a lack of verbal skills and still learning social skills.

Its no wonder this time in their lives have been dubbed the 'terrible twos' sometimes trailing over into the terrible three's.

Your child needs to learn there are conquences for actions, if he/she bites they get a time out, that includes school, the playground, or home, he/she is taken away from the fun,you/the teacher explains why there getting a time out and when they are sorry they need to apolise to the other child.

Slapping or biting them back does not work, this teaches the child another negative way to deal with other people.

Let your child know that aggressive behavior is unacceptable and show him other ways to express themselves.

Discipline consistently and keep your response the same each time.

Praise when they do something good and teaching them about sharing will also help towards good behaviour.

At this age, I would explain to the child that if she canot stop biting the other children, she will not be allowed to go to preschool. Tell her that only big girls can go, and if she keeps biting, then that means she is not ready for preschool and she will have to wait until next year to go.