in the Early Childhood realm, it’s called “Emergent Curriculum”, following the child’s lead – their interest – and then bringing the “teaching” into it, to expand on the learning that they are doing all on their own.
I think we often interfere too much and not respect the natural learning that takes place. And then we also often neglect to step in and teach when those precious moments arise.
You have exemplified, in my opinion, that perfect balance.
(oh and also letting children experience risk-taking so they are respectful of the possibilities and think twice about their actions.)

Toxins Out, Nature In - body/mind/spirit