Nannies support toddlers in going through an amazing amount of growth their first two to three years. The networks, or connections, within the infant’s brain are changed into an increasingly complex web of visual, motor, language, and social-emotional connections that are essential for later language, literacy, and learning. This continues into toddlerhood with connections continuing to be formed and refined. Although toddlers are not fully able to put phrases and sentences at age one, this development happens quickly!