Development of a competitive or cooperative game for multi-age groups. The goal: to collect cards that make up the combination "We are the children of the wooden house". The participants are invited to share how they will behave, together and separately, in different situations and events, how they will solve personal or social problems and how they will face environmental hazards. The purple cards show different situations, the orange cards offer solutions that can fit some of the situations. Design: Ruth Yehuda from Ran and Yaya Cohen-Ahronov's "Children of the Tree House" project