Your four year old is developing quickly across physical, cognitive, social, and emotional domains. They are beginning to understand bigger social concepts and ask many questions to learn about the world. Physically, they are improving skills like running, jumping, and riding tricycles. Socially, they enjoy making friends but also need structure and your support as their world expands beyond the home. Your four year old's development will unfold uniquely, so focus on following their lead with patience and encouragement.