Approach the screaming toddler with a clear head and peaceful demeanor. Determine the root of the child's tantrum prior to helping him settle down. Understanding how the toddler normally acts out when frustrated will be a helpful factor, too.
Speak to the child in a calm voice and acknowledge her feelings of anger. Stay at eye-level with the toddler when talking to her.
Decide if the child can be soothed by switching his activity. Removing the toddler from the situation that stemmed the anger is the next measure taken.
Placing the child in a time-out is necessary if speaking about the issue or diverting his attention elsewhere has not adjusted the behavior to an acceptable level.
Sit the child in a quiet area in the classroom away from the other children and any distractions. Explain to the child that the time-out area is a place to calm down and think about how she can react in a nicer way.
Remain focused on the class if the student continues to scream or be disruptive. The student will need to be removed from the classroom if he reaches a heightened emotional level where he may hurt himself or others.