Contrary to popular belief, graph paper is not just for math class. The best graph paper notebooks are especially helpful for practicing sketches or lettering, bullet journaling, creating ...

For those who hear the phrase “graph theory” and think of the basic pie charts and bar graphs introduced in elementary school, there’s a new world to be explored. “In graph theory, the most simple way ...

Imagine 100 dots scattered in front of you. In a haphazard variation on connect-the-dots, start drawing lines between the points. How many lines can you draw without producing a triangle? A square? An ...