Folding Paper in Half
Published in At Right Angles, 2015
Korpal, G. (2015). “Folding paper in half.” At Right Angles (India), pp. 20-23, Vol. 4, No. 3, November 2015. http://publications.azimpremjifoundation.org/1653/
This article discusses Britney C. Gallivan’s proof about the possibility of folding a piece of paper into half any number of times.
The article is nicely annotated and explained by Luís Batalha on Fermat’s Library.
Cited in the book “Understanding Lesson Study for Mathematics” by R. Archer, S. Morgan, and D. Swanson 