UNIVERSITY OF WISCONSIN River Falls
You can learn and practice grammar and vocabulary through explanations, activities, and games.
http://learnenglish.britishcouncil.org/en/
A creative writing website for teachers and Parents
http://www.creative-writing-solutions.com/creative-writing-prompts.html
Essay and Paragraph Writing lessons, exercises and worksheets: eslflow webguide
http://www.eslflow.com/AcademicWritng.html
20 Fascinating and Unusual Descriptive Essay topics
https://www.kibin.com/essay-writing-blog/descriptive-essay-topics/
Some of the daily writing prompts used in classes
http://writingprompts.tumblr.com/
http://kazuo.fc2web.com/English/TOEFL-essay.htm