I've told this story before: Back when I was in college, I had a summer internship at a place that was a service center for the K-12 schools in a large county. Microcomputers were the big new thing. We had a facility with one of each kind of computer (Commodore, Apple, Radio Shack, etc.) and all the software we could lay their hands on. Teachers could come in and try things out. My impression was that the "educationa…
The one bit of very nice software that does get used some places is interactive constructive geometry tools like Geometer’s Sketchpad (1995), Geogebra, or the like, though we didn’t know about those in my high school geometry class (also circa 2000).