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<p>[QUOTE=&quot;Bronwen, post: 399132, member: 5833&quot;]I loved geometry but would have loved it even more if teacher had one of these on hand.&nbsp; The principle is not one I can remember being taught.&nbsp; My dad went to a country school and at least once was surprised that I didn&#039;t know what to him was a simple fact of the geometry of a circle.</p><p><br /></p><p>Speaking of my dad, I was starting to think, until all this great info was produced, that this was a wood shop novelty project, a neat thing to make if you were an avid student woodworker, as my dad was.&nbsp; The pryamidal sections reminded me of something my dad made for me when I was a young child.&nbsp; Sorry for thumbnails; don&#039;t want to hijack thread completely.[ATTACH=full]138825[/ATTACH]</p><p><br /></p><p>They have crumbled away, but on the bottom the ends stuck out from where a rubber band was held in place by the little plug.&nbsp; He teased me big time by drawing the hook up part way, then letting it go so it would snap back.&nbsp; I just couldn&#039;t catch that dang rubber band at all.&nbsp; He eventually taught me the secret.&nbsp; Do any of you know it?&nbsp; He would not have invented it, there would have been a pattern going around.[/QUOTE]</p><p><br /></p>

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