Put your baby on their back or tummy and shake something that makes noise, like keys. Do they follow the sound with their eyes or head? What do they do when you shake fast or slow? If they do something, copy that action or sound and have a conversation without words.
See what your child is learning
You’re helping your baby learn to pay attention and to focus on what is happening. They’re also learning about cause-and-effect: When you shake something, it makes a sound. Your positive words and actions encourage them to pay attention.