Anything (even a rainy day) can be a great learning experience!
For a Rainy Day
It's easy to pop in a video to keep your child occupied; but these are better rainy day options!
On a warm, rainy day - Grab umbrellas and walk in the rain, or make paper boats and float them in puddles.
On a cool, rainy day - Put your infant in front of the window so he can see and hear the rain, or sing rainy day songs.
Why To's:
Why take a day off from learning just because it's raining?
Some people complain about rainy days. You're setting your child up to be cheery whatever the weather!