Phew. I am on track to publish 30 blog posts this morning. So, to reach that number, here is a worksheet on the Greek word root tetra–. It means four. You’ll find this root at the base of words (all present in this document) such as tetragon, tetrahedron, tetrapod, and tetravalent. If you’re teaching math or science or both, this worksheet might be useful (but it might not–those aren’t my subjects, alas).
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.