Why is a pencil lead made of graphite? Why do they write on the blackboard with chalk
| September 27, 2020 | Education
Graphite is used because it is soft and leaves a trace on paper. Chunks of chalk leave a mark on the board.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.