To help manage my students' attention and the classroom behavior in general I purchased a large piece of laminate from a local hardware store (Lowe's, Home Depot has good prices). I had it cut into 12 x 12 inch pieces. Each child has one at their desk (at designated times) with an eraseable marker. As I teach on a concept I may have them write an answer or an example and hold the board up. An example: during my lecture on diagramming, I might call out a sentence and have the class diagram it and each student holds up their board. This method has worked for me to keep their attention, and keep everyone involved in the teaching/learning time. I also use these boards, A LOT, for games. The kids love it!