by Irene Hannam, MS OTR/L

As parents, watching your child grow and achieve new skills is one of life’s most rewarding experiences. Understanding developmental milestones can help you support your child’s growth and identify areas where they may need a little extra help. This guide, from an Occupational Therapist’s perspective, will introduce you to the developmental milestones outlined by the CDC, WHO, and AAP, and provide you with tools, apps, and resources to aid you on this journey.
Understanding Developmental Milestones:
Developmental milestones are behaviors or physical skills seen in infants and children as they grow and develop.
These milestones are categorized into areas such as:
- Gross Motor Skills: Crawling, walking, jumping.
- Fine Motor Skills: Grasping objects, drawing, stacking blocks.
- Language Skills: Babbling, speaking words, forming sentences.
- Cognitive Skills: Problem-solving, recognizing people and objects.
- Social and Emotional Skills: Smiling, playing with others, showing emotions.

Organizations like the Centers for Disease Control and Prevention (CDC), World Health Organization (WHO), and the American Academy of Pediatrics (AAP) provide comprehensive guidelines on what typical development looks like at various ages.
Tools and Resources from the CDC, WHO, and AAP:
Tools and Resources from the CDC, WHO, and AAP:
Centers for Disease Control and Prevention (CDC):
- CDC’s Milestone Tracker App: A free app that allows you to track your child’s milestones, share progress with healthcare providers, and get tips for encouraging development.
- Printable Checklists: These are available for different age ranges to help you monitor milestones and know when to act early if there are concerns.
World Health Organization (WHO):
- WHO Child Growth Standards: Provides growth charts and guidelines for physical growth and motor development, helping you compare your child’s progress with international standards.
American Academy of Pediatrics (AAP):
- HealthyChildren.org: Offers a wealth of articles, guides, and resources on developmental stages, health, safety, and well-being.
- Books and Publications: Resources like “Caring for Your Baby and Young Child” provide in-depth information on developmental milestones and parenting tips.

Benefits of Tracking Developmental Milestones:
- Early Identification: Spotting delays or concerns early on allows for prompt intervention, which can significantly improve outcomes.
- Informed Parenting: Understanding what to expect at each stage helps you support your child’s development effectively.
- Enhanced Communication with Professionals: Being aware of milestones enables more productive discussions with pediatricians and therapists.
- Peace of Mind: Regularly tracking progress can alleviate anxieties by confirming your child’s healthy development.
Helpful Apps and Digital Resources:
- CDC Milestone Tracker: As mentioned, this app provides interactive milestone checklists and activities.
- BabySparks: Offers personalized programs with daily activities to support development across various domains.
- The Wonder Weeks: Helps you understand and anticipate your baby’s mental development phases.
- Pathways.org: Provides free resources and videos on child development and milestones.
Tips for Supporting Your Child’s Development:
- Engage in Play: Play is crucial for learning. Incorporate activities that promote motor skills, language, and problem-solving.
- Read Together: Reading enhances language development and cognitive skills.
- Encourage Social Interaction: Arrange playdates or attend group activities to foster social skills.
- Create a Stimulating Environment: Provide toys and materials that are appropriate for your child’s age and developmental stage.
- Stay Observant: Keep an eye on your child’s progress and don’t hesitate to seek advice if you have concerns.
How Occupational Therapy Supports Development:
Occupational therapists focus on helping children develop the skills they need for daily activities and overall well-being.
- Assessment: We evaluate your child’s developmental levels across various domains.
- Intervention: Through play-based therapy, we address areas like motor skills, sensory processing, and social interactions.
- Parent Education: We empower you with strategies and activities to support your child’s development at home.
- Collaboration: We work alongside other professionals to provide a comprehensive support system for your child.
When to Seek Professional Help:
If you notice your child isn’t meeting multiple milestones for their age or if something doesn’t feel right, trust your instincts. Early intervention can make a significant difference.
Consult with:
- Your pediatrician: They can provide referrals to specialists if needed.
- Occupational therapist: We can assess and address specific developmental challenges.

When to Seek Professional Help:
Understanding and tracking developmental milestones empower you to support your child’s growth effectively. Utilize the tools and resources offered by the CDC, WHO, and AAP, and remember that every child develops at their own pace. As Occupational Therapists, we’re here to support you and your child on this incredible journey.
Additional Resources:
- CDC Act Early: cdc.gov/ActEarly
- WHO Child Growth Standards: who.int/childgrowth
- AAP Healthy Children: healthychildren.org
For personalized guidance or to schedule an assessment, please reach out to a licensed Occupational Therapist or your healthcare provider.

