Pat'sBlog
The mathematical (and other) thoughts of a (now retired) math teacher,
Showing posts with label
david craig
.
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Showing posts with label
david craig
.
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Tuesday, 17 March 2009
The Pinhole Effect
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David Craig, an excellent teacher with the DoDDS System in Germany wrote to tell me, "Pat, your “ Tiny Circles” blog got me motivated t...
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