Here is a worksheet on the Greek root hemi (it means half or partly) and another on another on the Latin word root demi (it means half or less than). These are short worksheets designed to open a class session–they are not full lesson-length documents.
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.