The Time Warp Trio on Discovery Streaming has a great episode on Lewis & Clark
Here are also 2 great websites:
Here are some worksheets that I used:
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Thanks again for taking the time to upload these documents and links. I will start following you on Twitter.
Streams to the River, River to the Sea by Scott O'Dell is an excellent historical novel about Lewis and Clark. It is listed at Book Level 4.8. If this book is too challenging for your students, you could substitute another one in this activity. Use Edublogs to create a class blog where the students will journal as they read the book. Create a page for each student. Require that they make a certain number of comments on their own pages and a lesser number on the pages of their classmates.