Many classrooms across the USA are participating in a Postcard challenge or exchange. In my classroom, I have students request postcards from families and friends around the USA (and world!) since we study each of the United States in Social Studies class.
I plan to have each of my students keep this chart in their Social Studies folders. When a postcard is received, we will use this chart to track how many postcards our class has received from each state in the USA using tallies marks.