Being a bit of a thicko when it comes to science, I’m not 100% sure of the one idea, but what got me was the teaching of a concept (such as acceleration) through action, rather than abstraction.
One of my colleagues was telling me yesterday of her teaching a Japanese language and culture course, by ‘sending’ her students on an ‘Amazing Race’ style journey, to different cities. The students would have to navigate their way ‘on’ a bullet train, and describe their experiences, in Japanese. The students loved it, and the approach of adaptive release, where one problem has to be solved before the next one is revealed meant the students were (in many cases) competing desperately to get the next challenge. This is presumably in contrast to learning the alphabet and building a vocabulary one syllable and one character at a time.
This might all seem a bit obvious, but I suspect it’s not as pervasive as it might be, in terms of teaching and learning practice.