This visual guide to the progress of labor shows each of the 10 centimeters of dilatation in actual size. Includes a timeline of labor and provides percentage of effacement for each centimeter of dilatation. Includes depiction of fetal head seen at full dilatation. Ideal for teaching about dilatation, effacement, stages of labor, and fetal position. Bilingual English/Spanish. 13 panels. 6" x 6".