blackboards are much better: * easier to erase * easier to clean board and erasers * chalk is cleaner, cheaper, more expressive, less wasteful (no plastic),

blackboards are much better: * easier to erase * easier to clean board and erasers * chalk is cleaner, cheaper, more expressive, less wasteful (no plastic), and there are generally more colors available * chalk stays at full "marking capacity" until it runs out. Dry-erase markers make you write at less than full contrast for a long while until you toss them. * chalk dust is no problem if you have windows you can open a little * sounds better when you use it. :) * nicer light-on-dark contrast (IMO) But whiteboard gets chosen by non-experts b/c it supposedly makes less dust for electronics/projectors. Unfortunate.