How do you teach English to kids or young learners? And wait, who are young learners? Is that someone under 40?
Generally that term is used in the TEFL course community to describe students ranging from kindergarten to middle school.
Yet there is quite a difference in my experience teaching a kindergarten student and teaching a middle school student English.
A kindergarten student is going to be full of energy, often affectionate and quite bubbly. They are also going to have a really short attention span.
A middle school student has been through the system. They tend to be more tame. but also more hormonal and that can range from totally silent and uninterested to also quite bubbly and mature.