Developmental Checklist by Age

Published: September 3, 2026

24 Months: Two-Word Phrases and More Active Movement

Around 2 years old, many toddlers start putting two words together and become more physically active, like kicking a ball. Based on CDC developmental milestones, toddlers this age tend to show the following.

Social/Emotional

Language/Communication

Cognitive (Learning, Thinking, Problem-Solving)

Movement/Physical Development

Caregiving Tip

As toddlers become more physically active and range farther, it’s considered helpful to double-check safety around stairs and thresholds. Once two-word phrases begin, expanding what a toddler says into a slightly longer sentence when you respond is considered supportive for language development.

When to Consider Talking with a Pediatrician

If a toddler isn’t putting two words together at all, can’t follow simple instructions, or doesn’t attempt to run or climb stairs, 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.

Sources