We're Going on a Bear Hunt by Michael Rosen is one of my personal favourites when it comes to picture books and works with all ages. Here are some possible activities and enquiries.
Miss Magical Mess is a pre-school teacher and P4C Level 2B facilitator. After a shaky start as a P4C facilitator (P4C with 3 year olds... are you kidding?) Miss Magical Mess created her own approach to P4C and enquiry model and is now a big fan.