Early Childhood Development

Early Childhood Development

It's exciting to see your child accomplish new things like smiling, walking, and talking for the first time.

The way your child plays, learns, speaks, acts, and moves offers important clues about their development. Those accomplishments are called milestones. Milestones are the things that most babies and children do—from smiling to speaking to walking—at various ages and stages throughout infancy and childhood. While each child develops and learns at his or her own unique pace, developmental milestones offer guidelines for the activities and behaviors you might expect to see as your child grows.

Read on for what to expect at a glance. Click on the links to learn more about each stage of development from the American Academy of Pediatrics’ Healthy Children website.

Local Family Resources

Get connected to information about young children and local resources to help your family.

Help Me Grow SMC

Call Help Me Grow with any questions about your child’s development, and to get a free developmental screening. 

Headshot of Kitty Lopez

Kitty Lopez has served as the Executive Director of First 5 San Mateo County since 2012, focusing on policy, advocacy and communications development. Additionally, she is the Chair of First 5 Association of California. Kitty previously served as the Executive Director of Samaritan House, one of the leading safety-net nonprofit agencies serving low-income families and individuals in San Mateo County with food, shelter, clothing, health care, counseling, education classes, and holiday assistance from 2002 to 2012.

Kitty taught kindergarten, second grade, and high school in the Bay Area and in Santa Barbara, and was a consultant in schools with children who have autism and special needs. Additionally, Kitty worked in a residential substance abuse treatment center in San Francisco and psychiatric hospital in San Diego.

She attended University of California Santa Barbara earning a California Teaching Credential and B.A in Psychology. Kitty is active in her community serving on several community boards including HEART (Housing Endowment and Regional Trust of San Mateo County), STEP (Success Through Education Program), and Past President and Current Member of the San Mateo Rotary Club.