An easy way to help students structure their work.  Provide a template or structure for them electronically which can be downloaded and used to help structure their work.  Why not differentiate it and come up with some different versions of the template for different students?

To create a template you need nothing more than an Office suite which you can use to create it.  Deliver it to students in whatever way you think is most effective (via your school's VLE, as part of a lesson plan, via email).