Katie and her family make shamrocks for each of her classmates to celebrate St. Patrick's Day, but when Mrs. Connor shows a shamrock that looks very different, Katie is sad until, together, they learn the distinction between a shamrock and a four-leaf clover.Katie and her family make shamrocks for her classmates to celebrate St. Patrick's Day, but when Mrs. Connor shows a shamrock that looks very different, Katie is sad until they learn the distinction between a shamrock and a four-leaf clover.