About: http://webisa.webdatacommons.org/239276021

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	On the web and in tablet apps there is a button in the lower left corner of the practice activity
http://www.w3.org/ns/prov#wasQuotedFrom	xtramath.org