Kids don't get to see what's going on in their mouths that often, yet we keep stressing the importance of brushing and flossing. This seems like such a fun way to let them see what they're actually doing.
Using the marshmallows makes it fun, and it lets kids see that teeth have to be brushed on all sides to get really clean. The only thing we'd add to this activity is to throw in some other kind of food or even little bits of cotton to illustrate the tartar or plaque that gets on our teeth and then have the kids "brush it off."
You can find the complete how to at The Mother Huddle.
(Image: The Mother Huddle)