I say "Bulletin Board", but I actually have these on my white board.
To tie in my detective theme with my administration's desire for us to post our day's objectives, I came up with the idea of listing the day's "Mission", and then also having a place for the students to record things that they've learned ("Discoveries"). I will reward sincere, thoughtful responses.
So, this is a 12" x 18" .jpg image that can be printed at Costco (they do all of my printing for me). It will then be cut in half