The students of class II of AKSIPS-41 Smart School, Sector-41-B, Chandigarh learnt the importance of the post office as a means of communication. The visited the Post Office of Sector-36 with great enthusiasm and curiosity. They were surprised to see the different coloured letter boxes. Green is for local areas like Chandigarh, Panchkula and Mohali . Red is for International and all other states of India. Yellow is for Rajdhani (New Delhi) and white coloured letter box is for greetings. They eagerly observed the way the letters were sorted and stamped in the post office. The post office of Sector-31 has the facility for the nearly residents to send the telegram. To further create their interest in the understanding of the means of communication, the students will be encouraged to write a letter to their mother showing their love and gratitude and post it at the nearest letter box.