funny Tom Lehrer song re. "New Math" (subtraction) with the added help of visual explanations...
http://www.youtube.com/watch?v=a81YvrV7Vv8
And seriously, check out this rather innovative "new" math multiplication method! I wonder how many digits/dimensions it will work for...
http://www.youtube.com/watch?v=zvpLN5KJg0c
vid #2 (http://www.youtube.com/watch?v=e_cgAXk4NSk) ("Here's another example of this new line-intersection method of solving multiplication problems ... its disturbing that it works") <-- okay, so it's pretty much useless for practical purposes, but the comment by "ls1983lsls" is pretty true...
I wan't to know why its called the "new" math :o I did that stuff like 15 years ago (or more). And still people in the thread there on youtube were like "omg wtf?"... Baffles the mind.