Also on these boards
Cumulative - (This is the site, not the actual page - couldn't find picture on that page that was big enough.) "Our Knowledge is Piling Up" snow bulletin board - could put different units we've completed with summaries of each on them on snowflakes, or have students write on snowflakes what they've learned and pile them up across the bottom of the board
Great board idea! Why did I not think of this?