At my school we do Number Talk and Problem of the Day every week during the beginning of our math block! I created this to help my mathematicians become familiar, have a reference during math and for structure/organization! I usually project this on the smart board. There are two problem of the day slides. On the first problem of the day slide, I put the problem largely so my mathematicians can see the problem from their seat(I give out individual copies as well). The second problem of the day slide, I usually put the problem up their small enough to re-read and small enough for a mathematician to come up and solve it in the empty space. Number Talks are usually written on the board as I go, so I don't put anything actually in the slide.