Scaffolding Tasks

As the end of the school year approaches, it's clear (to me) that project-oriented lessons are going to be necessary to keep the kids engaged.  They (and me!) are not in the mood for working out the textbook.  I have been drawing on things from Connected Math Project and opted for the project:  Package Design Contest.  We hadn't done all of the lessons that preceded the project in the CMP Filling & Wrapping unit.  Still, we had touched on several of the ideas and had worked extensively (for us!) with pentominoes and hexominoes.  After "launching" the task with the first class - reading through the description and requirements and my asking some questions to be sure students understand the intent - I set the students off to begin working.  It was clear few students had the ability to focus on a project of this magnitude without some support.  It turned out to be a successful start after I wrote several questions to support the students as they first worked on the small package.  I will continue with other sets of questions for the other packages as we work through the project on successive days.  I wonder:  Is there value in giving this project to future teachers and asking them how they could scaffold students' learning/progression through this project?  What are some of the key questions to focus on completing the project?  What are some key questions to focus on the ideas to be understood in the project?  What are some key questions to develop and extend all students?  What are some additional questions to help struggling learners without taking away opportunities for mathematical thinking?