Spots before My EyesAuthor(s): Lesley JonesSource: Mathematics in School, Vol. 25, No. 2 (Mar., 1996), p. 38Published by: The Mathematical AssociationStable URL: http://www.jstor.org/stable/30211742 .

Accessed: 07/04/2014 15:37

Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp

.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact support@jstor.org.

.

The Mathematical Association is collaborating with JSTOR to digitize, preserve and extend access toMathematics in School.

http://www.jstor.org

This content downloaded from 81.152.52.202 on Mon, 7 Apr 2014 15:37:48 PMAll use subject to JSTOR Terms and Conditions

0 e"'S te'S oor

by Lesley Jones, Goldsmiths College, London

This is a photograph of the caret

in my local optician's shop. I particularly liked the design and thought it provided a nice illustration of (a + b)2 + b + 2ab.

When the "period tile" is considered, one of the ways it can be seen is set out below:

38 Mathematics in School, March 1996

This content downloaded from 81.152.52.202 on Mon, 7 Apr 2014 15:37:48 PMAll use subject to JSTOR Terms and Conditions