子女坛成了数学道场，我也来加一把火！数学书籍推荐

Waterloo 大学的数学网站
http://cemc.uwaterloo.ca/index.html
http://cemc.uwaterloo.ca/resources/resources.html

买书 https://cemc.math.uwaterloo.ca/cgi-bin/WebObjects/sigma.woa/wa/browseCatalogue