Inquiry in room 3 term 4

We are about to begin using our intersection for work on our focus of designing a healthy lunchbox under the title Crunch and Munch. Currently the children have been looking at food labels and the ingredients in those items of food and discussion around where sugar falls in that list and what are some of the other ingredients found on those lists.
I need to create some cars as we need to all start at the Explore car park and then the children will be able to move around as they become more involved with their inquiry.
I believe it is really important that the exploration is done as a whole class first because the discussion allows some of the children who have difficulty moving from the unistructural level to the multistrctural a chance to hear and think about ideas raised by others further down the thinking model.