About: http://webisa.webdatacommons.org/72300541

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	They provide a low tech (cheap!) vehicle that enables students to represent graphically their knowledge, and to share it with the instructor and other students
http://www.w3.org/ns/prov#wasQuotedFrom	wisc.edu