Developmental Checklist by Age

Published: September 3, 2026

15 Months: First Steps and First Words

Around 15 months, many toddlers take a few steps on their own and start trying new words beyond “mama” and “dada.” Based on CDC developmental milestones, toddlers this age tend to show the following.

Social/Emotional

• Copies other children while playing, like taking toys out of a container when another child does.
• Claps when excited.

Language/Communication

• Tries to say one or two words besides “mama” or “dada,” like “ba” for ball or “da” for dog.
• Follows directions given with both a gesture and words, like giving you a toy when you hold out your hand and say, “Give me the toy.”

Cognitive (Learning, Thinking, Problem-Solving)

• Tries to use things the right way, like a phone, cup, or book.
• Stacks at least two small objects, like blocks.

Movement/Physical Development

• Takes a few steps on their own.
• Uses fingers to feed themselves some food.

Caregiving Tip

Since toddlers who are learning to walk don’t yet have full balance, they may fall often — padding sharp furniture corners nearby is considered a helpful safety step. As toddlers try more new words, echoing back the sounds they make is considered supportive for language development.

When to Consider Talking with a Pediatrician

If a toddler can’t take even a few steps alone, doesn’t respond at all to directions combined with gestures, or isn’t attempting any words, checking in with a pediatric provider may be helpful. This information isn’t a diagnostic tool and doesn’t replace advice from a medical professional.