2 MONTHS:

• Watches you as you move
• Looks at a toy for several seconds

4 MONTHS:

• If hungry, opens mouth when they see breast or bottle
• Looks at their hands with interest

6 MONTHS:

• Puts things in her mouth to explore them
• Reaches to grab a toy he wants
• Closes lips to show she doesn’t want more food

9 MONTHS:

• Looks for objects when dropped out of sight
• Bangs two things together

12 MONTHS:

• Puts something in a container, like a block in a cup
• Looks for things he sees you hide, like a toy under a blanket