"I Didn't Know That" details the surprising tale of two boys born on the same day. All kids love to hear the never-boring story about the day they were born and each child's tale is unique and special. "I Didn't Know That" shows just how many surprises becoming a parent can bring. Two boys are born on the same day - three years apart - the day after Independence Day. They grow up together celebrating their birthday and the Fourth of July, a special time every year. This birth-story tale includes beautiful illustrations depicting hot summers, lovely scenery and fireworks displays.