Logo was the first programming language that I was exposed to as an elementary school aged child. I remember thinking that it was neat to draw something on the screen, but I didn't really understand enough geometry/trigonometry to draw anything interesting... Logo requires more math skills than I had at that age. I had better luck with QBASIC.

I really like the idea of hardware devices to teach programming, and unlike when this paper was written, now there are lots of different (and cheap) devices which are designed for that exact purpose. I wish they had those when I was growing up.