(The only rule I would impose on this is: steelman (the opposite of strawman) or penalty. Synonyms for steelmanning include: Ideological Turing Test; Rapoport-Dennett Rules; Mill's learning the other side - all necessary for doing dialectic well. About damn time that Ayn Rand got fair treatment from the next generation of philosophers, amiright?) Perhaps a fun and compelling mantra might be developed, such as: All Steelmanning All the Time.
I'm an imperfect researcher. I've posted numerous links to many resources on this before - but not perhaps the best resource of all, direct video evidence of children involved in philosophy discussions. So here is the search link: https://www.youtube.com/results?search_query=philosophy+for+children%2Clong . Here are the top results: