When you think about a sentence, you usually think about words — not lines. But sentence diagramming brings geometry into grammar. If you weren't taught to diagram a sentence, this might sound a ...

I read an article last month about the lost art of diagramming sentences, a once-required skill that many American children had to master if they wanted to pass English back in the mid-20th century.

Sentence diagramming was once a widespread technique for teaching kids how to analyze the structure of a sentence. If you had to do it in school, you either loved it or you hated it. Most kids hated ...