This document discusses numerical integration techniques for approximating definite integrals, including left- and right-hand sums, trapezoid sums, midpoint sums, and Simpson's rule. It provides a table to calculate the error in midpoint and trapezoid sums for different values of n subdivisions. It also gives error estimates for trapezoid and midpoint sums that depend on the interval endpoints a and b, the number of subdivisions n, and the maximum value of the second derivative on the interval. The document provides links for online resources that provide more information on numerical integration methods.