Logic models can help educators plan and monitor program evaluations. This introduction to logic models as a tool for designing program evaluations defines the major components of education programs--resources, activities, outputs, and short-, mid-, and long-term outcomes--and uses an example to demonstrate the relationships among them. This quick reference guide introduces logic models as a tool to help educators plan and monitor program evaluations. It is one of a four-part series on program planning and monitoring released by Regional Educational Laboratory Pacific. (Contains 1 note and 1 figure.)