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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.
Highlighters are useful tools: you can use them to mark dates on a calendar, parts of the relevant text in a book or any other use where you need highlight something on paper. Thy influenced our lives so much that we can even find them in some computer programs. Read more about history of highlighters.
Space pen began as a try to achieve a perfect pen. Pen was so perfect that it ended in space as a valuable tool and one of the symbols of humanity’s venture into space. Read more about history of space pens.
Compared with other art mediums, colored pencil is relatively new. It appeared at the beginning of the 20th century. But that doesn’t mean it is any less worthy especially when combined with other mediums. Here you can read more about colored pencil history.