Zero to Three is an article that shows which part of the brain develops from newborn to 36 months. The baby’s brain starts developing within a week of conception. During the prenatal period, the brain cells are organizing themselves. From newborn to 2 months, it is working on developing areas of crying, touching, feeding, vision, and hearing. From 6-18 months, the brain is working on developing cognitive and learning, movement, language, and social emotions. From 18 to 36 months, the baby’s brain fine tunes movement skills to gross and fine movement skills.