[Squeakland] Interactive geometry and mosaic

Hilaire Fernandes hilaire at ext.cri74.org
Fri Apr 7 00:31:25 PDT 2006

Hello all,

Here is another small demonstration about interactive geometry within 
This demo shows the use of some planar transformations: the central 
symmetry and the translation are used to build step by step part of the 
mosaic. It also helps to show the relation between the composed 
symmetries and the translation.

What I love is the ability within Squeak to mix, at any time, external 
tools as the PaintBrush or the Etoys ones to verify some ideas or 
hypothesis. This really help to improve the pedagogical efficiency of 
the interactive geometry tool, which I found are, in other platform, to 
much rigid in term of pedagogical exploration capabilities.

I am sorry this demonstration is in French only, but the videos are easy 
to understand and figure out.


Hilaire Fernandes

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