Here's the man in the middle of US map. This is a good tool to help students remember where these midwestern states are located. My grade teacher called this Mr. Mimal and to this day I know all my states and capitals
Historical Events - Middle School History Geography Worksheets: The Missouri Compromise. I am not completely sure yet, but I would try to tie this activity into math. This would be great for teaching ratios and percentages.
This Colonies Lap Book contains interactive organizers which may be glued onto a file folder to from a lap book, added to interactive notebooks, or used individually. Do something similar for science unit.