Mary,
This sounds great. Sometimes just one or two students are not flowing with the rest of the class. That's one situation. When the whole class seems less than fully engaged, that's when some activity (such as you've suggested) can be implemented to attempt to reengage the class, stimulate their interest, and get them back on track. I have found that by planning these kind of activities to start with helps keep students involved and participating.
Barry Westling
