About: http://webisa.webdatacommons.org/171533301

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	The first time you do this activity, or depending on the students??? comfort-level, start with just 2 familiar sorting categories, such as color and size, and build from there.
http://www.w3.org/ns/prov#wasQuotedFrom	pbskids.org