The power point is very simple to use; click the numbered box that you want to remove, the bingo call will appear in the middle of the grid before moving to the same spot as the removed square. I've turned off mouse click to advance the bingo slide to avoid any mishaps.
I made this for a special needs class that was more for a party atmosphere than a lesson so it's not really about grammer or learning per se but for a fun interactive bingo game that lets the students participate by selecting the next call. you could use it for ES grades 3/4 to ask "what do you want?" as they pick the number they want to see behind next.
The accompanying bingo sheet is a rush job and I'm not great at making worksheets on word yet but I've attached it just in case anyone is needing a quick and easy activity with little prep required.