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Marker pens are particular types of pen that can write on almost any surface and have many different types of ink. They can last very long or be erased with a swipe of cloth. Read more about history of marker pens.
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.
Pencil practically cannot be used without some kind of pencil sharpener. Were they simple knives or complex machines with many rotating elements, their purpose is to make a fine point to a pencil. Read more about pencil sharpener history, facts and types.
One of the things that make our human civilization what it is writing. Without it, great ideas would be forgotten, information would stay at the place where they originated and we would have to invent things a thousand times over. To write we have writing implements that changed throughout history.