When is a forest a forest? When is a tree a tree? Why is a palm tree not a tree? Why does the larch lose its needles in winter? How can I bend wood? Why is wood an insulator? What can wood do? Who works in the wood industry? What do forests and wood have to do with the climate? You can get answers to these and many other questions in the "App ins Holz". Build up your knowledge with flash cards and test it right away with a quiz duel against your friends or another app user. New learning cards, videos and interactive experiments on forest, wood and climate protection are constantly being added. In the programming competition (information at www.holzmachtschule.at) you can even become part of the app yourself.