Whiteboard Knowledge - The Development History of Whiteboards
1. Era of blackboard: Before the widespread use of blackboards, classrooms used slate or wooden boards. It was not until the late 19th century that blackboards became popular.
2. Era of greenboard: In the early 20th century, greenboards emerged. With a smooth surface and no glare, greenboards were more convenient to use compared to blackboards.
3. Era of whiteboard: In the 1960s, whiteboards were introduced. Whiteboards had a smooth surface, no glare, and allowed the use of various colored markers, making teaching more dynamic and engaging than greenboards.
4. Era of electronic whiteboard: In the early 21st century, electronic whiteboards were developed. They could be connected to computers, enabling real-time writing, drawing, and presentations. Additionally, electronic whiteboards could record teaching materials, facilitating review and organization.
In summary, the development history of whiteboards evolved from blackboards to greenboards and finally to electronic whiteboards. With advancements in technology, whiteboards have become an indispensable tool in modern education, business, research, and other fields.
