About: http://webisa.webdatacommons.org/419043921

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	Stage and Duration of Activity: 3 class periods (not including time to teach background concepts)
http://www.w3.org/ns/prov#wasQuotedFrom	scienceteacherprogram.org