Which sampling procedure involves grouping the population and then selecting the groups or the clusters rather than individual elements for inclusion in the sample?

Most important work of teacher is

A. To organize teaching work

B. To deliver lecture in class

C. To take care of children

D. To evaluate the students

A teacher should be

A. Honest

B. Diligent

C. Dutiful

D. Punctual

Environmental education should be taught in schools because

A. It will affect environmental pollution

B. It is important part of life

C. It will provide job to teachers

D. We cannot escape from environment

At primary level, it is better to teach in mother language because

A. It develops self-confidence in children

B. It makes learning easy

C. It is helpful in intellectual development

D. It helps children in learning in natural atmosphere