The purpose of this guide is to provide a framework on which elementary school teachers (K through 6) can build a nutrition program that can be implemented into the existing curriculum. Founded on the importance of early and sound education for instilling good nutrition habits, the guide is divided into three grade levels: K through 2 (Discovering Food); 3 through 4 (Food Choices); and 5 through 6 (Nutrition Trek). Concepts covered in this guide include sources of food; kinds of food; food for growth and energy; eating habits; snack foods; food customs; nutrients, selection, production, and sanitation; digestion of food; and buying and selling food. For each concept, sequential performance objectives, learning activities, evaluations, and a resource page are provided. A bibliography of books, pamphlets, charts and posters, films and filmstrips, and miscellaneous material is appended. (Author/MP)