[moi2388]

Yes. So I tell them that, and as purely visual trick to remember what it means I tell them to just rotate it by 90 degrees and they can see what to add if they get confused.

It’s the same as with the unit circle. I teach them about pi, but also speak about Tau in case they get confused, so it makes more visual sense to them.

Same with small kids when a/b=c. I draw little arrows to show them how you can rewrite it, as purely visual trick.

Oh well, what works for one might not work for another i suppose.