This is a hands on lab that uses gold fish crackers to simulate predator/prey relationships in a fresh water pond. A Great Blue Heron is eating all the gold fish, Why? The lab comes with student copies of the instructions, a table, and a graph. Students will enjoy this basic understanding of predator/prey relationships while eating their gold fish crackers. This lab also comes with a teachers note page that documents some of my struggles and hints for a successful lab. Best Wishes!