To provide an upskilling pathway programme for teachers to strengthen their key competencies and their profiles in dealing with environmental and green issues, making use of tinkering, an innovative approach to learning that builds on inquiry-based pedagogy, and exploits some of the most engaging and motivational elements of learner-centred, immersive, personal learning. It is an approach characterised by active engagement with materials and activity, the intentionality of action and the conscious desire to learn how to learn. All this is found in activities as simple (or as complex) as putting objects together or apart or exploring materials to create original artefacts.