Spielen mit Wasser und Luft

Spielen mit Wasser und Luft - by Walter Kraul. 

This book provides a large number of inspiring tips for a highly imaginative game with the elements water and air. From waterwheel to windmill and from pump to boomerang. And all this including simple instructions for building things yourself.

This book is not available in Dutch. The English edition of this publication can be found under product number 65212000 on this page. This is a combination of both German publications.
Language: German.

Walter Kraul (1926), studied mathematics and physics. Following a scientific career at the Sonnenobservatorium Wendelstein he taught at the Rudolf Steiner School in Munich from 1953. After this, he established a toy firm for which he designed, manufactured and sold the games. 
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