Does your baby blow you away with how fast he’s learning to do cool stuff, like hold his head up by himself? Milestones are developmental stages that (usually) happen naturally. Here are the main ones to watch for – and what you can do to help your baby master them.

 Developmental Milestone: Sight

At birth, your baby can only see things between nine and 14 inches away. By one month, vision increases to one to two feet and, by three months, a baby can see objects between six and eight feet away.

To test his vision, see if he gazes at you and seems interested in your face. And check if he can track an object from side-to-side. You can help your baby with the tracking skill by holding a bright object eight to 10 inches in front of his face. Slowly move it back and forth to encourage him to follow it with his eyes.

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