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It is easy to write something. But what to do when you make a mistake? Erasers come to the rescue! Since we started to write, we tried to find the way to fix our errors. Until the discovery of the rubber, we used clothes, rocks and even bread. Read more about eraser history, facts and types.
When schools and classrooms started to grow, in 19th century, a problem appeared: how to transfer lectured information to a greater number of students. Solution was at first in a blackboard and chalk and later in whiteboard and whiteboard pen. Read more about history of blackboard chalk and whiteboard pen.
Mechanical pencils are also old invention dating even from 16th century. First ones were relatively simple mechanisms, only to become more complicated with time. Today we have mechanical pencils which can write and draw very precisely.
Calligraphy is an old art of drawing letters and symbols in a skillful way. Chinese calligraphy uses ink brush and ink to emphasize motion and represent texts that are charged with dynamic life. Read more about history of ink brush and calligraphy.