30 or 31 days in a month?

How many days are in each month? Use your knuckles!

As kids, we learn how many days each month has. Many kids learn the nursery rhyme. My attitude is if you can remember the damn rhyme you can learn the number of days without the poem as a crutch.

Thirty days hath September,
April, June, and November:
All the rest have thirty-one,
Except for February,
Which hath twenty-eight days clear,
And twenty-nine in each leap year.

My parents taught us kinesthetic memory aid. We're all right-handed so a fist was made using our left hand. Our knuckles represent 31 days and the valleys are 30 (or 28/29). The neat thing is that once you learn the order of the months you automaticly know how many days are in each month.