Our school has adopted an approach of modern and traditional media, saying, SmartBoard and projector between two normal chalkboards. Aufrgund which the chalk dust regularly affects the contacts of modern technology, I have decided for the liquid chalk. She is on a flawless polished board all right, but even if only a tiny residual chalk or moisture on the table is, it is hardly usable. Either the pin in the middle when writing suddenly dry or chalk running unattractively. The smoother the surface, the better the writing. On glass it is therefore good! The colors are beautiful brightly.
