Read this in my son's AWANA newsletter, and we tried it out this morning with leftover balloons from W.'s big fourth birthday (see photo of the cake out of the dump truck--that's crushed Oreos. YUM).
But I digress. The activity:
Blow up ten balloons, and on each, write a number from 1-10. Throw the balloons up in the air, and your child tries to catch two!
Level 1 difficulty: Identify the number.
Level 2: Add the two numbers.
Level 3: Identify the larger number, and subtract the smaller number.
This actually maintained attention spans considerably well!