NCTM - National
Council of Teachers of Mathematics -Quilt Block Symmetries -
http://www.nctm.org/Publications/Mathematics-Teaching-in-Middle-School/2016/Vol22/Issue1/Quilt-Block-Symmetries/
Quilting with
Children with Heidi Craft:
http://www.thecraftstudio.com/qwc/
Heidi gives examples of projects she's completed with
children, and has links to several other web pages with
similar content.