As it is in sufficiently active use in the lexicons of most educated people, I worked up this context clues worksheet on the noun wherewithal for use in the high school classroom. For an abstract noun, it has always struck me as surprisingly sturdy word.
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.