When girls reach ages 10 and boys ages 12, they develop physical changes which affect them differently. In girls, the first sign of puberty is breast development. During puberty, a child's body matures into an adult body capable of sexual reproduction. There are 3 changing phases:
1. Puberty Phase 1- 10-12 years
2. Puberty Phase 2- 13-15 years
3. Puberty Phase 3- 16-18 years
The child between these ages would react most negatively if a mother tried to discuss puberty. He is so young to go thru the physical, psychological and social changes that he needs to be understood.