Their daughters told riddles and planned out what day their baby sister’s birthday would be celebrated, if born on Feb. 29. “My 8-year-old was like, ‘What if she’s born on a leap year?’,” ...

But he will only be celebrating his third “real birthday.” He’s a leap day baby, one of an exclusive club of people born on Feb. 29, a date that occurs only once every four years.

Which Leapfrog toy is best? Today, technology is being used by kids before they can even read. From simple robot-building kits to visually stimulating tablets, children nowadays grow up with ...