Math Hombre

A blog for sharing my math interests on the web, to post new materials for elementary, secondary and teacher ed, and vent mathematical steam when needed. Thanks for visiting!

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Showing posts with label 3-D geometry. Show all posts
Showing posts with label 3-D geometry. Show all posts
Wednesday, January 28, 2015

Shadow Sculpture

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We just had a fun, crazy and exhausting day for Super Science Saturday, a yearly K-12 outreach by our outstanding Regional Math and Science ...
Monday, December 13, 2010

Christmas Lights

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aMacHan @ Flickr Our family put up a Christmas tree this weekend, and it reminded me of one of my favorite problems ever! Students did g...
Friday, April 23, 2010

Solid Unit

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As our semester in geometry drew to a close, we investigated solids.  Rather than dispense formulas ( Go, Kate !), we tried to follow the Va...
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Thursday, February 4, 2010

Quick Triangle Sum & Pythagorean Proof

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Just a quick, pretty unoriginal sketch to help secondary/tertiary students think through the justification for the sum of the angles in a tr...
Monday, November 23, 2009

Net Result

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I really enjoy designing nets (2-D plans that fold up into 3-D objects), and I love designing them in dynamic geometry, where you can design...
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