(i) Communication is the transmission of human thoughts, views or opinions from one person to another Person.
(ii) Workers are informed about what should be done, where it is to be done, how it is do be done and when it is to be done.
(iii) Communication helps the regulation of job and Co-ordinate the activities.

(i) Every employee of an organisation has to take a number of decisions every day.
(ii) Decision-making helps in the smooth functioning of an organisation.

No, directing is not necessary at planning stage, it is necessary at execution / operational stage.

Yes, planning involves setting of objectives and determining the most economical and viable alternative to achieve the goals.

(i) Planning and co-ordination
(ii) Organising and co-ordination
(iii) Staffing and co-ordination
(iv) Directing and co-ordination
(v) Motivation and co-ordination ; and
(vi) Controlling and co-ordination.

"Look before you Leap is the traditional proverb, which refers to the management function of planning. Planning refers to deciding in advance.

Managerial functions are:
(i) Time specific
(ii) Institutional specific; and
(iii) Country specific.

(i) The classroom must be with proper facility and lesson plan must be planned in advanced and lecture should be given to teachers in a proper manner.
(ii) They should be proper coordinate between students and teacher to avoid conflict among them in order to achieve peace.