> However, I haven’t found any such cards for Greek characters, so I think mine are the first in Greek.

Huh? A simple web search shows many, many, many results.

I read this whole article like you were going to teach them Ancient Greek, but now I'm guessing modern is more likely?

Anyway, some of my strongest language class memories from college are from translating parts of the Odyssey and New Testament.

Very handy. My math education would have gone much better if my notes weren't full of "lambda is the half stickman; sigma is upside down Q or broken E" and other really silly things