About: http://webisa.webdatacommons.org/185882031

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	Depending on grade level, both students and teachers typically use measuring devices and visual aids such as graphs and charts.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com