About: http://webisa.webdatacommons.org/104955806

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	20, double-sided, distortion-free, plastic mirrors help teach the concept of symmetry when used with pattern blocks or other materials.
http://www.w3.org/ns/prov#wasQuotedFrom	didax.com