No Birthday for Aislinn is a storybook that teaches children about Leap Year in a way that is sure to makes learning fun. Young Aislinn is sad because she feels that she is being left out of birthday celebrations. As she learns about Leap Year Day, she realizes that she is a "Leapling", one of the unique children who only have a birthday once every four years. No Birthday for Aislinn is a wonderful tool for elementary school teachers who are looking for a way to engage their classroom before introducing the concept of Leap Year to their class.