Mathematical Communication is a developing collection of resources for engaging students in writing and speaking about mathematics, whether for the purpose of learning mathematics or of learning to communicate as mathematicians.

Lefschetz with highlighted revisions

These drafts of an article by Mark McLean illustrate how a proof can be improved by pulling out a lemma. Although the article is on an analysis topic beyond the understanding of Real Analysis students, Mohammed Abouzaid has drawn attention to the structure of the article by highlighting relevant guiding text, so the improvement caused by pulling out a lemma is clear.

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License: CC BY-NC-SA Page content licensed by Article by Mark McLean, highlighting by Mohammed Abouzaid under the license:
CC BY-NC-SA (Attribution-NonCommercial-ShareAlike)