Here’s a worksheet on the Greek word root ortho. It means “straight,” “correct,” “vertical,” and “perpendicular.” You know, those things you hope your orthopedist can do for you posture–the first two at least, I guess.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.