Dynamics means changing.   Group dynamics began as an identifiable field of inquiry in the United states at the end of 1930’s. Kurt Lewin had popularized the term Group Dynamics. Teacher can change the behaviour of the child through interaction in the group. He/she deals with the child for five to six hours daily. In order to make the teaching effective , the teacher must study group dynamics in a small group. e.g stars children are liked by majority of the students. The teacher should make a combination of stars and isolates or rejected students together and try to change the behaviour of isolate or rejected pupil.

It refers to the forces which operate in group situation. It studies the structure of the group and other phenomena which emerge out of group interaction.

View of Krech and Crutchfield—-Group dynamics implies changes that takes place within group.

According to Cartwright and Zander-“Group dynamics is a field of inquiry dedicated to advancing knowledge about the nature of the groups, the laws of their development and their interrelations with individuals, other groups and larger institutions.”

Class is a collection of pupils coming from different socio-economic background. Teacher should have the knowledge of the process of interaction among students. If the teacher is well equipped with the basic knowledge of group dynamics, it can provide better guidance for adjustment. Teacher can improve the emotional and social atmosphere of the class.

The knowledge of group dynamics is important as our joint family system is dying out. The nuclear family is not able to provide the sense of security,co-operation,affection due to busy schedule of life . Adolescents need shelter,love, recreation and motivation from the group. The teacher should know how adolescents form groups and what is the structure of groups in general.

Mental health is an important factor in the learning process. If there are conflicts, rivalry,fear, anxiety in the group, learning will be disturbed. The teacher can find out the reason of emotional and social anxiety of the pupils and can use remedial measures to maintain a conducive environment in the classroom.

The teacher should understand the students and make the proper sitting arrangements. The teacher must also see that the groups are not formed on the basis of caste , creed and religion.

The teacher can change the behaviour of the group and maintain a conducive environment.These are the reasons why a teacher should study  the group dynamics.