About: http://webisa.webdatacommons.org/157626305

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	Manipulatives such as wooden blocks and dowels cut to various scales and identified by means of different textures or Braille labels were used to help students during the construction process.
http://www.w3.org/ns/prov#wasQuotedFrom	nfb.org