What is a developmental milestones chart?

A developmental milestones chart is a visual tool that shows the typical ages when most children achieve key skills across movement, communication, thinking, and social development. In Australia, milestone charts are commonly used by NSW Health and the Raising Children Network to guide health checks and early education assessments.

For example, charts may highlight that babies usually roll between 4–6 months, toddlers start speaking simple words by around 12 months, and preschoolers learn to draw shapes or count by age 4 (Raising Children Network, 2024). These charts give parents an easy reference to see what’s expected at each stage and to identify when extra support may be needed.

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