When was the first chalkboard made

Chalk is still manufactured in many different colors which helps with drawing of diagrams and in geometry. Whiteboard pen or a dry-erase marker is a non-permanent marker that uses an erasable ink. Its main purpose is to be used on slick, non-porous writing surfaces like whiteboards and overhead projectors and to be easily erased without leaving marks with a dry eraser. Before there were dry-erase markers there were wet-erase markers. These could not be erased by a dry eraser but with a wet cloth.

After them came whiteboard pens. The first whiteboard pen was invented by Jerry Woolf who worked in Techform Laboratories. Later it was patented by Pilot Pen in Sanford made their dry marker called EXPO in It was a bulky marker and available in black, red, blue, and green. Later, Sanford added thin variants, less unpleasant odor and many more colors.

Like the dust from their erasers, even the tried and true chalkboards are beginning to fade away. These interactive boards allow teachers to draw, type, surf the Internet, or present lectures with "touch screen" technology. Rather than erasing a lesson from the board, a teacher can print the lesson for the students, providing them with yet another learning resource. In the classroom, a teacher can open student papers from a disk and highlight grammar or punctuation errors.

The students can then correct the errors in real time by interacting not only with the technology but also with fellow students and the teacher. SMART company website. Early whiteboards were not significantly easier to clean than blackboards, requiring a wet cloth to remove the ink. Today, high-quality whiteboards are usually made of porcelain- or enamel-coated steel, aluminum or hard coated durable films laminated onto a rigid surface which can provide a cost effective, easily customized finish.

These materials provide high visibility and virtually no staining, even after years of use. They can also be sustainably produced from recycled materials, and built to last a lifetime. Electronic whiteboards are the next step in whiteboard use, offering interactive displays and the ability to edit and save the information shared on a board.

Fifty years after their invention, the ease and familiarity of whiteboards mean they are likely to remain popular for many decades to come.