The Purdue OWL (Online Writing Lab)

The Purdue OWL (Online Writing Lab) is a resource that I have actually used myself for help in my own writing.  It is a comprehensive resource for a variety of writing skills.  It includes sections which cover everything from general writing skills to poetry to ESL.  It is a pretty manageable site to navigate and even has a very helpful MLA and APA guide for teaching older students about citations. 

I would use this resource as a place form which to draw information for teaching (reminders of grammar rules and mechanics) as well as some exercises for students' use.  There are some great resources for ideas of creative projects to assign as well. 

In my classroom I would use this web resource as a reference for the students.  It is a "one-stop-shop" for help with grammar, mechanics and style and is very easy to manuver. It will give older students a place to find answers to their questions without having to feel silly for not remembering their grammar rules.