This laboratory manual serves as a valuable companion to any precalculus text. Each of the manual's laboratory projects is designed for group collaboration, and each project culminates in a written report submitted by the group. This manual can be used with either a graphing calculator or a computer graphing program. Guides for the TI-82, TI-83, TI-85, TI-86, and TI-92 graphing calculators are included. Topics are presented in the traditional order, beginning with linear and quadratic functions and ending with exponential, logarithmic, and trigonometric functions.