Three Years

Social and Emotional

• Copies adults and friends
• Shows affection for friends without prompting
• Takes turns in games
• Shows concern for crying friend
• Understands the idea of “mine” and “his” or “hers”
• Shows a wide range of emotions
• Separates easily from mom and dad
• May get upset with major changes in routine
• Dresses and undresses self

Language/Communication

• Follows instructions with 2 or 3 steps
• Can name most familiar things
• Understands words like “in,” “on,” and “under”
• Says first name, age, and sex
• Names a friend
• Says words like “I,” “me,” “we,” and “you” and some plurals (cars, dogs, cats)
• Talks well enough for strangers to understand most of the time
• Carries on a conversation using 2 to 3 sentences

Cognitive (learning, thinking, problem-solving)

• Can work toys with buttons, levers, and moving parts
• Plays make-believe with dolls, animals, and people
• Does puzzles with 3 or 4 pieces
• Understands what “two” means
• Copies a circle with pencil or crayon
• Turns book pages one at a time
• Builds towers of more than 6 blocks
• Screws and unscrews jar lids or turns door handle

Movement/Physical Development

• Climbs well
• Runs easily
• Pedals a tricycle (3-wheel bike)
• Walks up and down stairs, one foot on each step

Source: https://www.cdc.gov/ncbddd/actearly/milestones/milestones-3yr.html