That would be the old Erector Set. Can’t have that, though, it sounds too similar to an erection.
I had one of those (an Erector Set, not an erection) when I was a boy. My Dad passed it down to me so it was probably from the late 20s or early 30s. I had more fun and learned a lot about construction, levers and pulleys, gears, and electric motors. Wonderful toy.
Actually that teacher would probably rather talk about erections than Erector sets. That is one look into a perverted liberal mind.
Erector Sets made by the old A.C.Gilbert, the builder of American Flyer trains...