This lesson is based on the Lewis and Clark Expedition. Included in the Smart Notebook file is a Bell Ringer, Video Guide, Timeline, Postcard Assignment Directions, and a Postcard Model. The idea of the lesson is to utilize a video resource and timeline to help students identify the goals, accomplishments, and positive/negative experiences associated with the efforts of the Corps of Discovery from 1804-1806 and then to use that knowledge to extend their own learning by creating an original pos