But not really.
Before we get started here, I have to tell you about
The Mailbox magazine [this isn't an ad--I just like it].
My preschool-y friend told me about it one day, and I checked an issue of it out of our library. Oh, man. It's geared toward PreK teachers, but most of the activities are totally adaptable for a smaller group of kids--or for one kid, if you're like me.
So you're going to be seeing a lot of ideas here that I got from
The Mailbox.
Like this one!

Here's the idea: print out a big ol' picture of a tooth. Put it in a smooth page protector, and scribble on it with dry-erase pens. Then explain to your kid [ahem, your
student] about why we brush our teeth--and then give them an old toothbrush and have them scrub all the marks off the tooth.
I brush Little Boy's teeth regularly, but we don't spend much time talking about
why. We're usually in a hurry to brush and move on to whatever's next. So this activity was a good reinforcement of why, exactly, we brush our teeth.