OK, last but not least today, here is a worksheet on the Latin word roots ambi and amphi. They mean both, on both sides, and around.
These are extremely productive roots in English, yielding ambience, ambivalent, ambiguous, an amphibian, to name just four. These are all good words to help students to understand abstract nouns, adjectives, and substantives.
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.