Rainbow Price: $11.95
Best known as transparency markers, vis-a-vis work well on any laminated or white board surface or contact paper. They erase with a damp cloth. Dry erase markers leave a residue on some surfaces - test a small spot before using them extensively if you have a doubt. In these cases, a wet-erase marker generally works fine. Also, the fact that these do not dry erase allows for you to use them in concert with dry-erase markers where you want to leave a base structure or outline on a board. For example, in demonstrating fractions, you may want to draw two circles with wet-erase markers. Now use your dry-erase markers to divide circles, show equivalency, etc. You can erase the dry-erase again and again, and the wet-erase circles will stay intact until you erase with a wet cloth. The wet erase marks will erode somewhat if you draw over parts with the dry-erase marker, since that removes part of the wet-erase mark. Use this system for graphing, number lines, etc. Set includes one each of black, red, blue, green, yellow, orange, brown and purple markers.