This is a second grade lesson plan that can be used to teach or review the concept of place value and ways to "show" a number. (expanded, written, quick draw, or place value form). I have included the two bingo boards that can be used with this lesson. (This lesson could easily be adapted to first or third grade as well.) Students will really enjoy playing bingo! Get a few pencils or erasers to use as prizes, and you are ready to go!