Here's another useful article from Associated Content.  There are four game ideas included here that will help chldren learn using dry erase boards.  They are targetted towards parents and home schoolers who have small number of students.  Let us know how they are.  The list of games are below, but the actual article is after the jump.

1) Write and Wipe Cards

2) Word Finder 

3) Letter Tiles

4) Scrabble 

(click here for article ) 

Here's a lesson plan found on University of Texas website revolving around teaching math in classrooms.

Brief description of lesson plan:
This coordinated set of three activities allows a teacher to introduce how a number line works, guide students in understanding how to place numbers correctly along a number line, and show students how to use the number line to carry out addition and subtraction problems.