This document discusses identifying regions of areas under the normal curve. It explains that the area under the normal curve corresponds to probability. The z-table provides the proportion of area between any two z-values. For example, the area between z=0 and z=1 is 0.3413. Regions can be identified in terms of percentages of the total area. The document also provides steps for using the z-table to determine the area corresponding to a given z-value.