29 months old
Between the ages of two and three, kids undergo a language explosion; their vocabulary undergoes massive expansion, and they begin to understand its nuances. For example, he may have started calling himself “I” or “me,” which means he’s beginning to get pronouns. That’s a huge cognitive leap! Encourage his language development by reading to him (rhythmic and repetitive stories are a hit right now), sing songs together and chat while you play together.