Here is a worksheet on the worksheet on the Greek word root macro. It means large and long. It shows up, as this exercise will demonstrate for your students, in a number of important nouns in English (many of which also morph into adjectives) representing concepts.
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.