Respuesta :
Answer:
In these lessons, students become familiar with the four key periods of growth and human development: infancy (birth to 2 years old), early childhood (3 to 8 years old), middle childhood (9 to 11 years old), and adolescence (12 to 18 years old).
Children between the ages of 6 and 12 are in the age period commonly referred to as middle childhood.