iPods in our class for 6 weeks

We are going to do a unit on "Who I am as a Learner?" and now we have an opportunity to include ipods. I thought it would be powerful to ask students to 'mindmap' how they learn best. Ask them which tools and processes support their learning (we will do this as a staff team also) and then spend 6 weeks with the ipods and then overlay the technology piece onto their first mindmap.

Our hypothesis is that this process of metacognition and Assessment For Learning (AFL) is at the heart of Assessment As Learning. Lorna Earle said to me that Assessment AS was really the most important thing we want to instill in our learners since we want them to take these learning tools, their strengths, with them. 

I wonder how clearly my students will communicate how important, essential even, the digital tools were and which ones helped most.

Any ideas for how to do this? What else to think about?