Development refers to maturation of functions and acquisition of various skills for optimal functioning of an individuals.
Domains of Development
Normal development is a complex process and has a multitude of facets. However, it is convenient to understand and assess development under the following domains:
i. Gross motor development
ii. Fine motor skill development iii. Personal and social development and general understanding
iv. Language v. Vision and hearing.
Gross Motor Development
Motor development progresses in an orderly sequence to ultimate attainment of locomotion and more complex motor tasks
Fine Motor Development
This primarily involves the development of fine manipulation skills and coordination with age. 
Language
Throughout the development of language it is the receptive ability and understanding which precedes expressive
Personal and Social Development and General Understanding
[Source](Op GhAi Textbook of pediatrics)
I hope there are a lot of new parents reading your page. Good stuff. A nice way to track development
Thank you sir.i hope that here are lot of good people to appreciate and boost me to keep going.
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very informative. Thank you
good post for parents! nice work 👍
Thank you.