SAS Curriculum Pathways is a site I came across in my science class days. But they have really expanded the number of interactive tools for students. Here is the highlight from a recent email:
Writing Reviser is part of a suite of tools that supports students through the entire writing process: planning, drafting, revising, and publishing. Students with individual accounts can save and reload work in any of the tools.
Three products in the suite are already available for teacher and student use:
You can create individual student accounts to help your students- click here for the directions.