Central objective: toddler-development-article-20-month-old — practical, research-informed guidance for caregivers and child care centers on developmental milestones and everyday strategies for 20-month-olds. Supporting elements include a related article titled "The ''Puzzle Pieces'' of Sleep Stages in Children and How they Fit Together" to deepen understanding of sleep and development; currently there are no listed trainings, resources, or jobs (see ''View All'' free resources).