Study concepts in child psychology that focus on children's development in the classroom environment. For example, research how children react when their wants and desires are not fulfilled. Psychology and child development departments at universities often have articles and fact sheets available on their websites.
Remove children from their peers when they display unwanted behavior. For example, calmly tell the child they are in time-out for a certain period of time.
Explain to all of your students exactly what you expect from them with keywords; such as sharing and respect. For instance, have the children sing songs, watch videos and memorize phrases that emphasize good behavior.
Praise children when you see good behavior. For example, if you see a child sharing a toy with a classmate, bring this to the attention of the classroom in a positive way. Rewarding good behavior by public praise encourages all the children to emulate desired behavior.
Show attention as equally as possible among your students. A positive environment for all children can help prevent unwanted behavior.
Plan activities for the children that allow for them to think through hypothetical scenarios. For example, perform a classroom scenario with puppets where a child refuses to share with another. Ask your students to identify the bad behavior in the skit and how they would correct it.