The first face-to-face multiplier event was performed by the University of Deusto team. It took place 29 June 2021 at the Saint Patrick´s English School, Donostia/San Sebastian. It is the first face-to-face multiplier event after lockdown with 20 participants. During this activity, we discussed with teachers the implementing inclusive environmental STEAM lessons in their day-by-day instructional practice. All inSTEAM lessons are available in Basque, Spanish and English. As an environmental example, we used 6th Sustainable Development Goal – “Clean Water and Sanitation”. The main objectives of this multiplier event are to introduce the environmental topic “Water Management” in the framework of the national curricular and to show and train teachers how to apply the created by inSTEAM team lessons in their classroom.