I don't know how... but...
Magic School Bus
or
American Girl
It could be pretty dope to have educationally based TTRPGs for kids. The American Girl one could have some Oregon Trail vibes.
Or, ooo... what about Richard Scarry?
Okay. You have unfortunately been hit with the curse that makes you adapt a work you liked as a kid into a ttrpg.
What thing are you adapting?