8581 /www/nrich/html/content/id/8581/ 10 0000-00-00T00:00:00 <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0">ajk sfh (TODO) Here is a collection of general-purpose classroom resources. For stage-specific - go here -.</mdoxml> 2 3 0 0 0 0 0 Header for 6129