what a great idea! I will have to try it.
Here is another game to use when teaching vocabulary.
It's called random numbers but can be used for any
vocabulary. The flashcards from this website should
work perfectly. It seems extremely simple and perhaps
even boring, but it works well because it requires that
the students really pay attention, yet give them time
to process the language in their minds. Here is the link;
http://verbwall.com/VWVW/Lessons/Lesson7.htm