One of a series of documents produced by a nationwide network of early childhood education specialists, teachers, parents, and Head Start staff, this nature trail guide for exploring the outdoors is intended as a supplemental teaching aid for teachers or parents. The guide identifies and illustrates the most predominant and readily observable species found along trails and ponds of the western United States. An added feature of the guide is a brief geological history of the area, as well as a rock identification list. The document concludes with a list of tips for teachers and parents. Activities may be adapted for use at any grade level. (LH)