School’s almost here, which means so’s the task of buying school supplies. If you’re a high school or college student—or if you’re buying stuff for someone who is—one of the items on that list is ...

Many books and articles I’ve seen on drawing effective graphs say not to use grid lines. Why? Because they say Edward Tufte said so. In this post we’ll look at the exact words of Edward Tufte and see ...

A parabola is a curved line with particular characteristics. Any point on the curve is the same distance from a fixed point and a fixed straight line. The result looks like half of an ellipse or the ...

Gridzzly is a beautifully simple tool for anyone who uses grid, graph, or ruled paper. The webapp lets you fine-tune the pattern you need for printing. Just choose the shape (dots, lines, squares, or ...