Since it’s a word in relatively common use these days, perhaps this context clues worksheet on the noun boon will be useful in your classroom. This word is also used as an adjective, but it means basically the same thing.
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.
Mark's Text Terminal 