Visible Thinking is a flexible and systematic research-based conceptual framework, which aims to integrate the development of students' thinking with content learning across subject matters.
pz.harvard.edu/thinking-routines
This bundle of "Global Thinking Routines" can be applied across the curriculum, to develop international mindedness and taking different perspectives. Developed by Veronica Boix Mansilla of Project Zero.
Not Project Zero, but many useful ideas for teaching and meetings. Some might be combined with or used within a thinking routine.