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The history of the boomerang puzzle

The boomerang puzzle has its origins in the classroom. I lead a working group technique in a small primary school. The option to build a boomerang, the children were of course very intrigued.
Me provided, however, the remains a major challenge. Children should not reverse pre-generated form. My idea was different. How do I get the children to design a completely own boomerang? Asymmetrical shapes I first completely excluded, the difficulty would be for absolute beginners to high. The different abilities of the children I had observed. So I came up with the idea to build three-or four-winged. Anyone could be selected so according to his abilities (differentiation).
But the class 4 has other difficulties. to design a form with a pencil and set square and this also rotationally symmetric, which would have led to chaos. On
Based on these considerations, I developed individual components, which the children can then put together at will. Such a boomerang then consists of the following parts:

1. a center of rotation (for 3 or 4 wings)
2. two components for the wing
3. a wing end

Designing a custom shape worked in the Class 4 without any problems. This form was then glued to the wood and cut out. Also, the application of the section made no difficulties. Sun moved to work a few hours the first boomerangs their webs ...