The next time you are sending your students to several websites for one project, put them together with BridgeURL. It is very simple to assemble and it builds in slick navigation once your sites are together.
You can even embed directions into your string of web pages if you link to a Google Doc with directions about what to do next. Or you could add a Google Form after each web page so students have to answer a question before proceeding.
Here is a recent list of my 50 Sites in BridgeURL format.
Here are more ideas along with step-by-step directions.