Egyptian fractions. (English)
NCTM News Bull. 45, No. 7, 1-4 (2009).
1
The Union divided: A mathematical look at the U.S. Civil War. (English)
NCTM News Bull. 45, No. 2, supplement (2008).
2
Supplement: Was Pythagoras really a square? (English)
NCTM News Bull. 44, No. 7, Supplement (2008).
3
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