Write ups, chin ups, push ups

I am thinking about dialog today. It’s a topic I’ve covered to some extent in my Yakkity Yak essay, but I’m wondering if there couldn’t be a way to construct some bare-bones exercises to teach beginners some of the basics of improving it.

A starting point, I think, would be to actually have dialog as opposed to implying it. So I might preamble with:

Though there aren’t necessarily any right or wrong ways to do anything in fiction-writing, it’s sometimes useful to pretend this isn’t the case. This is because some techniques generally work better than others; some strategies should be employed sparingly, rather than as a matter of habit.

With that in mind, let’s attach the label “Less Effective” to this:

Hans & Greta debated knocking on Mrs. Witch’s front door.

And this one we’ll call “More effective.”

“Should we knock?” Hans asked when they reached Mrs. Witch’s door.
Greta shook her head. “If we warn her, she’ll call the police for sure.”

Part one of the exercise would then be to supply three more less Effective sentences:

Pinnochio lied about breaking curfew, but of course his nose grew and Papa grounded him for a month.

Mr. Straw Pig indicated he would very much prefer not to allow Wolf past his threshold, unless of course he had a warrant.

Part two would be for the writer to find and edit some examples from their own work, and part three would be analysis: did this improve your writing? How?

What do you think? Potentially useful?