Here, on the final day of January, 2018, is a short exercise on the Greek word roots hepta and hept. They mean seven. This is a document to use at the beginning of a class period to settle students–and build numerical literacy.
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.