Happy 4th of July!
If the United States was born on July 4, 1776, how old is it today?
My 6-year-old has been playing with the idea of subtraction in the context of people's ages for about six months now. He was initially interested in calculating the ages of everyone in our family (grandpa, grandma, uncles, aunts, cousins, dogs, ...) Then he became fascinated with historical characters such as Benjamin Franklin, Abraham Lincoln, Helen Keller, and Thomas Elva Edison, among others. He would remember all their dates of birth and death, so he used to obsessively figure out how old each one was at the time of death on his Magna Doodle or his sketchbook. He would even account for the month of death and determine if the person already had a birthday or not.
Can you see how my 6-year-old was able the "age" for United States? Pretty cool, huh?
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