This document provides background information on Lewis and Clark's expedition and instructions for an assignment to research and write about plants and animals encountered along their trail. Students are asked to select one plant and one animal, take notes on each, write a short paragraph describing each species using a 12pt font, include a hand-drawn or computer-generated picture of each, and provide information on where each species was found along with a reference page citing sources. Several websites are provided as resources for researching species information.