Other
Research Assistant: For Students: Purpose Statement
This site gives advice on how to write an effective purpose (thesis) statement. The summary is given as answers to four questions: what? why? when? how?.
University of Illinois
University of Illinois Urbana Champaign: Toefl Practice Site: Coherence and Unity
This site discusses coherence achieved through major and minor connector transitions. Examples are given, and there is a link to an exercise meant for the particular class this site was designed for, still useful practice for anyone....
Louisiana Department of Education
Louisiana Doe: Curriculum Hub: Ela Guidebooks: Application Student Selected Task: Revise Your Work
Revise the organization of your work to make sure the structure is appropriate to the task, purpose, and audience. This will help develop work that is clear and coherent.