Snopes.com - April Fool's Day Origins - In-depth look at several of the legends that surround the origins of the holiday. Includes some modern day examples. Annie's April Fool's Day Page - Tells about the holiday's history and considers the day from a Christian perspective. Infoplease.com: April Fool's Day Has Serious Origins - Relates the serious origin and history of this light-hearted day. Lesson Plan - April Fool's Day - Lesson plans for grades 3 and 4 developed as a student project at Utah State University. April Fool's Day - Includes hoaxes, pranks, gag gifts, trivia, history, quotes, messages, funny party ideas and April Fool recipes. Wikipedia - April Fool's Day - Hyperlinked encyclopedia article includes the day's origin and information on its customs in many countries.