About: http://webisa.webdatacommons.org/367479319

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	There are several different worksheets and some other math skill other than addition and subtraction.
http://www.w3.org/ns/prov#wasQuotedFrom	richmond.edu