Explain to the child that biting is not acceptable behavior. Speak calmly and tell the child that it is never OK to bite another person.
Teach the child acceptable ways to deal with his frustration. Spend time talking with him and tell him he can say no if another child is trying to take his toy from him. Explain that you are there to help at anytime.
Give the child a timeout. It is important for her to learn the consequences of her actions. If she is very young, you can tell her to sit in the corner for a couple of minutes. She needs to associate biting with unhappy consequences.
Include him in comforting the biting victim. He needs to see the effects of his biting, such as crying caused by pain or even bleeding. Allow him to give the child who was bitten a bandage or a tissue.
Speak with the child's parents. Find out if anything unusual is happening in the biter's home that may be leading to the biting. Discuss ways to deal with the biting. The parent may be able to tell you ideas she has used.
Provide praise for positive behavior. Let the child know when she is doing well. Compliment her so she knows she is not a bad child.